Contains 67 accepted taxa overall.
Characteristics
Classification
Citation
CYPERUS Linnaeus, Sp. Pl. 44. 1753.
-
TYPE: Cyperus esculentus Linnaeus 1753. Lectotypified by Britton, Bull. Dept. Agric. Jamaica 5(suppl. 1): 6. 1907.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Cyperus aggregatus | INFLATEDSCALE FLATSEDGE | Not Native FAC (NWPL) FAC (DEP) | ||
| Cyperus albostriatus | DWARF UMBRELLA SEDGE | Not Native | ||
| Cyperus alopecuroides | FOXTAIL FLATSEDGE | Not Native FACW (DEP) | ||
| Cyperus articulatus | JOINTED FLATSEDGE | Native OBL (NWPL) OBL (DEP) | ||
| Cyperus bipartitus | SLENDER FLATSEDGE | Native FACW (NWPL) | ||
| Cyperus blepharoleptos | CUBAN BULRUSH | Not Native OBL (NWPL) Y OBL (DEP) | ||
| Cyperus brevifolius | SHORTLEAF SPIKESEDGE | Not Native FACW (NWPL) FACW (DEP) | ||
| Cyperus compressus | POORLAND FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus croceus | BALDWIN'S FLATSEDGE | Native FAC (NWPL) FAC (DEP) | ||
| Cyperus cuspidatus | COASTALPLAIN FLATSEDGE | Native FACW (NWPL) FAC (DEP) | ||
| Cyperus difformis | VARIABLE FLATSEDGE | Not Native OBL (NWPL) OBL (DEP) | ||
| Cyperus digitatus | FINGER FLATSEDGE | Not Native OBL (NWPL) | ||
| Cyperus distans | PIEDMONT FLATSEDGE | Not Native OBL (NWPL) | ||
| Cyperus distinctus | SWAMP FLATSEDGE | Native FACW (NWPL) OBL (DEP) | ||
| Cyperus drummondii | DRUMMOND'S FLATSEDGE | Native OBL (NWPL) OBL (DEP) | ||
| Cyperus echinatus | GLOBE FLATSEDGE | Native FAC (NWPL) FACW (DEP) | ||
| Cyperus elegans | ROYAL FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus entrerianus | WOODRUSH FLATSEDGE; DEEPROOTED SEDGE | Not Native FACW (NWPL) OBL (DEP) | ||
| Cyperus eragrostis | TALL FLATSEDGE | Not Native FACW (NWPL) | ||
| Cyperus erythrorhizos | REDROOT FLATSEDGE | Native OBL (NWPL) OBL (DEP) | ||
| Cyperus esculentus | YELLOW NUTGRASS; CHUFA FLATSEDGE | Not Native FAC (NWPL) FAC (DEP) | ||
| Cyperus filiculmis | WIRY FLATSEDGE | Native FACU+ (NWPL) | ||
| Cyperus filiformis | WIRY FLATSEDGE; FLORIDA FLATSEDGE | Native Rare-State FACW (DEP) | ||
| Cyperus flavescens | YELLOW FLATSEDGE | Native OBL (NWPL) FACW (DEP) | ||
| Cyperus flavicomus | WHITE-EDGE FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus fuligineus | LIMESTONE FLATSEDGE | Native Rare-State FACW (DEP) | ||
| Cyperus grayi | GRAY'S FLATSEDGE | Native | ||
| Cyperus haspan | HASPAN FLATSEDGE | Native OBL (NWPL) OBL (DEP) | ||
| Cyperus hortensis | LOW SPIKESEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus hyalinus | QUEENSLAND FLATSEDGE; PEDUNCLED FLATSEDGE | Not Native FAC (NWPL) | ||
| Cyperus hystricinus | BRISTLY FLATSEDGE | Native FACW (DEP) | ||
| Cyperus involucratus | UMBRELLA PLANT | Not Native OBL (NWPL) Y OBL (DEP) | ||
| Cyperus iria | RICEFIELD FLATSEDGE | Not Native FACW (NWPL) FACW (DEP) | ||
| Cyperus lanceolatus | EPIPHYTIC FLATSEDGE | Not Native FACW (NWPL) OBL (DEP) | ||
| Cyperus lecontei | LECONTE'S FLATSEDGE | Native OBL (NWPL) FACW (DEP) | ||
| Cyperus lentiginosus | LATIN AMERICAN FLATSEDGE | Not Native FACW (DEP) | ||
| Cyperus ligularis | SWAMP FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus metzii | ASIAN SPIKESEDGE | Not Native FACW (DEP) | ||
| Cyperus neochinensis | AWNED HALFCHAFF SEDGE | Not Native FACW (NWPL) FACW (DEP) | ||
| Cyperus neotropicalis | AMERICAN HALFCHAFF SEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus ochraceus | POND FLATSEDGE | Not Native FACW (NWPL) FACW (DEP) | ||
| Cyperus odoratus | FRAGRANT FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus ovatus | PINEBARREN FLATSEDGE | Native FACU (NWPL) FAC (DEP) | ||
| Cyperus oxylepis | SHARPSCALE FLATSEDGE | Not Native FACW (NWPL) | ||
| Cyperus papyrus | PAPYRUS FLATSEDGE | Not Native OBL (NWPL) OBL (DEP) | ||
| Cyperus pedunculatus | BEACHSTAR | Native Rare-State FACU (NWPL) FACW (DEP) | ||
| Cyperus pilosus | FUZZY FLATSEDGE | Not Native FACW (NWPL) FACW (DEP) | ||
| Cyperus planifolius | FLATLEAF FLATSEDGE | Native FAC (NWPL) FACW (DEP) | ||
| Cyperus plukenetii | PLUKENET'S FLATSEDGE | Native | ||
| Cyperus polystachyos | MANYSPIKE FLATSEDGE | Native OBL (NWPL) FACW (DEP) | ||
| Cyperus prolifer | DWARF PAPYRUS; MINIATURE FLATSEDGE | Not Native Y FACW (DEP) | ||
| Cyperus pseudovegetus | MARSH FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus pumilus | LOW FLATSEDGE | Not Native FACW (NWPL) FACW (DEP) | ||
| Cyperus reflexus | BENTAWN FLATSEDGE | Not Native FAC (NWPL) | ||
| Cyperus retrofractus | ROUGH FLATSEDGE | Native FACU (NWPL) | ||
| Cyperus richardii | RICHARD'S FLATSEDGE | Not Native | ||
| Cyperus rotundus | NUTGRASS | Not Native FAC (NWPL) FAC (DEP) | ||
| Cyperus sesquiflorus | FRAGRANT SPIKESEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus sphacelatus | ROADSIDE FLATSEDGE | Not Native FAC (NWPL) | ||
| Cyperus squarrosus | BEARDED FLATSEDGE | Native OBL (NWPL) FACW (DEP) | ||
| Cyperus strigosus | STRAWCOLORED FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus subsquarrosus | SMALLFLOWER HALFCHAFF SEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus surinamensis | TROPICAL FLATSEDGE | Native FACW (NWPL) FACW (DEP) | ||
| Cyperus tetragonus | FOURANGLE FLATSEDGE | Native FAC (NWPL) | ||
| Cyperus thyrsiflorus | SOUTHERN FLATSEDGE | Native FAC (NWPL) FACW (DEP) | ||
| Cyperus unioloides | UNIOLA FLATSEDGE | Not Native FACW (NWPL) | ||
| Cyperus virens | GREEN FLATSEDGE | Native FACW (NWPL) FACW (DEP) |
Identification Key
1. Scales spirally arranged
2
1. Scales distichous
4
2. Leaves 0.2-2 mm wide; spikelet scales 0.1-0.5 mm wide; perianth of 1-2 hyaline scales (former Lipocarpha)
2. Leaf blades 2-7 mm wide; spikelet scales 0.5-2.5 mm wide; perianth absent
3
3. Culms to 100 cm long, with leaves primarily basal; leaves 30-110 cm long; leaf ligule present, ciliate; style 2-fid (former Oxycaryum)
3. Culms to 12 cm long, densely leafy throughout; leaves 3-8 cm long; leaf ligule absent; style 3-fid (former Remirea)
4. Inflorescence of 1–4 spikes, sessile; spikelets with 1–3 scales; styles 2-fid; achene lenticular (former Kyllinga)
4. Inflorescence with 1-many arrays of 1-many spikes, sessile or pedunculate; spikelets with 5–76 scales; styles 2- or 3-fid; achene lenticular or trigonous
5
5. Stigmas 2; achenes biconvex (Pycreus group)
5. Sitgmas 3; achenes trigonous or terete
6
6. Spikelet disarticulating into 1-fruited segments (scale, internode, and rachilla wings) (Diclidium group)
6. Spikelet not disarticulating into 1-fruited segments
7
7. Leaves lacking blades, or blades rarely to 9 mm long
7. Leaves with conspicuous blades
8
8. Spikelets digitate or pseudowhorled, borne from the same point or appearingly so, internodes unapparent between the spikelets, rachis 0-2.5 mm long
9
8. Spikelets dense to sparse along a prolonged or elongate rachis, spicate or racemose, rachis 3-25 mm long
10
9. Spikelet scales 1-keeled longitiudinally or rounded
9. Spikelet scales 2-keeled and longitudinally flattened or depressed along the middle
10. Spikelets with most (middle and proximal ones) descending at a downward angle, only the few distalmost spreading
10. Spikelets with most spreading to ascending, not regularly pointing downward or only a few proximal ones descending
11
11. Spikelets overlapping, densely spicate and radiating in nearly all directions; floral scales 2-5(7) per spikelet
11. Spieklets spaced between distally and proximally adjacent ones, loosely spicate or paniculate, semi-distichous or loosely spiraled around the rachis; floral scales 2-30 per spikelet
1. (Key A, formerly genus Lipocarpha) Leaves 1-2 mm wide; spikes (1)3-6, terminal, the bracts spreading; anthers 0.5 mm (Lipocarpha maculata)
1. Leaves 0.3-0.6 mm wide; spikes (1)2-3, appearing lateral with the an erect bract continuous with the culm; anthers 0.1-0.2 mm long
2
2. Outer scales contracted into an awn subequal to longer than the scale body; stigmas 3 (Lipocarpha squarrosa)
2. Outer scales apiculate; stigmas 2 (Lipocarpha micrantha)
1. (Key B, formerly genus Kyllinga) Floral scale winged, laciniate; anthers 2 mm long (Kyllinga squamulata)
1. Floral scale ciliate or glabrous, not winged; anthers 0.2-1.2 mm long
2
2. Spikes white
3
2. Spikes green
4
3. Plant with slender, delicate stolons; central spike hemispherical to pyramidal; achene brown (Kyllinga bulbosa)
3. Plant cespitose; central spike cylindric; achene black (Kyllinga odorata)
4. Plant rhizomatous; anthers 0.8-1.1 mm long
4. Plant cespitose; anthers 0.2-0.4 mm long (Kyllinga pumila)
1. (Key C, Pycreus group). Spikelets with 3-6 floral scales, the scales with several longitudinal veins
1. Spikelets with (4)6-54 floral scales, the scales mostly with 1 veins on either side
2
2. Floral scales 3-4 mm long
2. Floral scales 1-2.5 mm long
3
3. Floral scales with erect to recurved awn, the awn 0.3-0.5 mm long
3. Floral scales without an awn, merely acute to acuminate
4
4. Culms 1.5-2.5 m tall; inflorescence bracts 20-100 cm long; achene dorsiventrally flattened, borne with face toward rachilla
4. Culms 0.1-0.8 m tall; inflorescence bracts 1-35 cm long; achene laterally flattened, biconvex, or subcylindric, borne with edge toward rachilla
5
5. Inflorescence bracts (2)8-35 cm long; spikelet with floral scales distant, not overlapping or scarcely overlapping; floral scales with clear or hyaline border
5. Inflorescence bracts 2-15(23) cm long; spikelet with floral scales imbricate, closely overlapping; floral scales with a yellowish, brownish, or greenish border
6
6. Achene linear-oblong, 0.4-0.5(0.6) mm wide, 2-2.5 times longer than wide
6. Achene ellipsoid to obovoid, (0.5)0.6-0.8 mm wide, 1.3-2 times longer than wide
7
7. Floral scales light to dark brown or purplish, usually at least partly dark brown or purplish; stigmas 1-1.5 mm long; achene black
7. Floral scales yellowish to greenish or partly pale brown; stigmas 0.5-1 mm long; achene black to brown
8
8. Cespitose annual; stamens 3; achene black or dark purplish
8. Rhizomatous perennial; stamens 2; achene brown
1. (Key D, Diclidium) Culms 0.5-1 mm wide; leaves 0.5-2 mm wide; inflorescence bracts 0.5-1 mm wide, longest one erect; spikelet clusters usualy subsessile, spikelets digitate or nearly so
1. Culms (0.5)1-4 mm wide; leaves 4-12 mm wide; inflorescence bracts 1-14 mm wide, longest spreading to ascending; spikelet clusters pedunculate, spikelets on an elongate rachis
1. (Key E) Primary inflorescence bracts 2-3(4)
2
1. Primary inflorescence bracts 20-100
4
2. Culm (4)7-20 mm wide, distinctly septate; spikelets in spicate clusters
2. Culm 2-8 mm wide, not noticeably septate; spikelets in digitate clusters
2
3. Primary inflorescence branches 5-50, mostly linear, usually of varying lenghts, immature spikelets early apparent; anthers 0.3-0.5 mm long
3. Primary inflorescence branches 50-250, mostly filiform, mostly all elongate and subequal in length, greatly elongate and often appearing naked before immature spikelets arise; peduncles subtending spikelet clusters filiform anthers 1-1.2 mm long
4. Primary inflorescence bracts 15-30, these 15-40 cm long; spikelets in digitate clusters, these subtended by short bracts 3-10 mm long
4. Primary inflorescence bracts 4-12, these 3-45 cm long; spikelets in spicate clusters, these subtended by elongate bracts 15-250 mm long
5
5. Primary inflorescence bracts (8)20–45 cm long; primary inflorescence branches stiff, ascending to erect; spikelet clusters subtended by linear bracts, 1.5-5 mm wide
5. Primary inflorescence bracts 3–8 cm long; primary inflorescence branches slender, drooping or arching; spikelet clusters subtended by filiform bracts, 0.5-2 mm wide
1. (Key F) Annuals
2
1. Perennials
5
2. Floral scales (2.4)2.6-3 mm long; achene 1-1.5 mm long
2. Floral scales 0.6-2.2 mm long; achene 0.5-0.8(1.1) mm long
3
3. Floral scale apex truncate to obtuse, scarcely if at all mucronulate
3. Floral scale apex recurved
4
4. Floral scale with 1 lateral vein per half, the apex emarginate or retuse with a cupsidate awn
4. Floral scale with 3-4 lateral veins per half, the apex acuminate or attenuate
5. Rhizomatous; leaves 2-15 mm wide
6
5. Cespitose; leaves 1-4 mm wide
7
6. Leaf blades and inflorescence bracts with 3(-5) major veins, these 3-15 mm wide; primary inflorescence bracts 8-14
6. Leaf blades and inflorescence bracts with 1 major vein, these 1-5 mm wide; primary inflorescence bracts 3-5
7. Plant viscid; leaf blades involute
8
7. Plant not viscid; leaf blades flat or V-shaped
9
8. Floral scales 2.4-2.6 mm wide; achene obovate, 0.9-1 mm wide, black to dark brownish or reddish black, with a hyaline, iridiscent overlay
8. Floral scales 1.5-2.4 mm wide; achene oblanceolate, 0.5-0.8 mm wide, dull light to dark brown
9. Culm bases scarcely if at all cormose; basal leaf sheaths brown to dark purplish or dark red; floral scales reddish; rachilla wings 0.2 mm wide
9. Culm bases distinctly globose-cormose, the culm about half as wide as the cormose base; pale brown, pinkish red, to pale yellow or greenish; floral scales light brown, off-white, or stramineous; rachilla wingless or wings to 0.6 mm wide
10
10. Spikelet clusters usually sessile or subsessile, rarely a few pedunculate; rachilla wings absent; floral scales 2.6-3.6 mm long; achene sessile
10. Spikelet clusters (at least some) usually pedunculate; rachilla wings 0.4-0.6 mm wide; floral scales 2-2.8 mm long; achene substipitate
1. (Key G) Culms antrorsely scabrid; leaf blades and bracts with some distinct cross-veins
2
1. Culms smooth to mostly retrorsely scabrid; leaf blades and bracts lacking cross-veins
3
2. Primary inflorescence branches 3-5; floral scales ovate, 1.4-1.6 mm long; achenes 1-1.2 mm long
2. Primary inflorescence branches 6-12; floral scales oblanceolate, (1.3)1.5-2(2.4) mm long; achenes 1.2-1.5 mm long
3. Achene base swollen, spongy
3. Achene base not swollen, sometimes stipitate
4
4. Floral scale apex erecct to slightly recurved; achene linear, 0.2-0.3 mm wide, 4-5 times as long as wide
4. Floral scale apex mostly incurved; achene ovoid to ellipsoid, 0.2-0.7 mm wide, 2-3 times as long as wide
5
5. Longest inflorescence bract erect, continuous with the culm; floral scales pinkish or reddish
5. Longest inflorescence bract spreading to ascending, not continuous with the culm; floral scales yellowish to green
6
6. Culms smooth; achene 0.4-0.7 mm wide, usually stipitate
7
6. Culms smooth to retrorsely scabrid (rarely a prickle antrorse); achene 0.2-0.4 mm wide, not or scarcely stipitate
8
7. Inflorescence usually densely congested, the spikelet clusters mostly longer than to slightly shorter than their subtending peduncles; floral scales 2-2.3 mm long; achene surface puncticulate
7. Inflorescence open, the spikelet clusters mostly much shorter than their elongate subtending peduncles; floral scales (1.2)1.5-2 mm long; achene surface partly reticulate
8. Culm base dark reddish brown, dark purplish, to nearly black; floral scales (1.2)1.4-1.6(1.8) mm long, pale green
8. Culm base pale reddish or brownish green; floral scales 1-1.5 mm long, yellowish green
1. (Key H) Culms glabrous; leaves and bracts glabrous except for marginal prickles; spikes ca. 2 times long as wide; rachilla wing clasping achene for its entire length (therefore achene not visible in abaxial view); floral scales golden brown
1. Culms (at least distally) minutely to densely scabridulous; leaves and bracts harshly scabrid or hirtellous on adaxial surface; spikes nearly as wide as long; rachilla wing clasping achene 3/4 or less of its length; floral scales grayish green to brown, often red-purple striate
2
2. Culm obtusely trigonous to subterete; leaves and inflorescence bracts usually puberulent; inflorescence branches scabrid; spikes tight, burlike, turbinate; terminal scale spinose; spikelets with 1(–2) floral scales; rachilla wing hyaline, clasping achene ca. 1/2 its length; longest bract equaling or shorter than longest ray;
2. Culm sharply angled; leaves and inflorescence bracts with pubescence confined to midrib on abaxial side; inflorescence branches glabrous (rarely with a few antrorse hairs proximal to spike); spikes loose, obtrulloid to obdeltoid; terminal scale not spinose; spikelets with 3–6(8) floral scales; rachilla wing papery with narrow, hyaline border, clasping achene for 3/4 its length; longest ray shorter than bracts
1. (Key I) Culms, rays, and leaf blades papillose; leaves harshly scabrid on margins and midribs
1. Culms, rays, and leaf blades not papillose; leaves scabridulous or glabrous on margins and midribs
2
2. Spikelet clusters sessile, or most sessile and a few pedunculate; spikelets mostly ascending; floral scales 1.8-2.6 mm wide
2. Spikelet clusters with numerous pedunculate ones and few sessile ones (more sessile in C. blodgettii); spikelets mostly spreading, or distal ones ascending, middle ones spreading, and proximal ones descending; floral scales 1-2.2 mm wide
3
3. Floral scales 3.5-4.5 mm long
3. Floral scales 1.8-3.6 mm long
4
4. Spikelet clusters subglobose and about as long as wide; spikelets 4-8 mm long; floral scales 2.3-3.6 mm long, 1.8-2.2 mm wide
4. Spikelet clusters subcylindric and 1.2–3 times longer than wide; spikelets 4-7 mm long; floral scales 1.8-2.6 mm long, 1-1.5 mm wide
5
5. Spikelets 4-7 mm long, 1.5-2 mm wide; stigma 1-2 mm long; floral scales ascending (rarely subappressed); achenes oblong-fusiform; rachilla wing thin, deciduous, covering less than 1/2 achene face
6
5. Spikelets 2.2-4(4.5) mm long, 0.8-1.6 mm wide; stigma 0.6-0.9 mm long; floral scales appressed; achenes abruptly constricted, not fusiform; rachilla wing persistent, 0.2–0.3 mm wide, covering at least 1/2 achene face
7
6. Most spikelet clusters sessile, few pedunculate, peduncles <2 cm long; floral scales greenish to reddish brown
6. Most spikelet clusters pedunculate, few sessile, peduncles to 8 cm long
7. Inflorescence bracts usually divaricate; of xeric areas
7. Inflorescence bracts usually ascending; of mesic areas
1. (Key J) Inflorescence usually branched below spikelet clusters; spikelets ascending to erect, loosepaniculate, floral scales obovate-orbiculate, apex emarginate; styles <0.1 mm long
1. Inflorescence usually unbranched below spikelet clusters, occasionally branching; spikelets mostly spreading (sometimes some distal ones ascending to erect); floral scales elliptic, oblong, or ovate, apex acute to obtuse; styles 0.2–3.6 mm long
2
2. Floral scales 2-7 per spikelet
3
2. Floral scales (3)6-36(42) per spikelet
4
3. Leaf blades 3-10 mm wide; spikelets narrowly ellipsoid, 1.5–2 mm wide
3. Leaf blades 0.8-3 mm wide; spikelets oblong to linear, 0.6–1.6 mm wide
4. Rachis hispidulous
4. Rachis glabrous
3
5. Floral scales sparse along rachilla, the apex of the scale barely (if at all) reaching the base of the proceeding scale (along the same side of the rachilla)
5. Floral scales imbricate along the rachilla
6
6. Floral scales (2.1)2.4-4 times as long as wide
7
6. Floral scales 1-2 times as long as wide
8
7. Floral scales densely red-glandular punctate, mucronulate to mucronate, mucro 0.2–0.5 mm, terminal scale conduplicate; anthers 0.5–0.8(–1.4) mm; styles 0.8–1 mm; stigmas 1–2 mm
7. Floral scales eglandular, acute at the apex, terminal scale involute; anthers 0.3–0.5 mm; styles 1–2 mm; stigmas 3–4 mm
8. Floral scales whitish with a light green edge, and often reddish speckled
8. Floral scales mostly brown, red-brown, reddish, or greenish, not speckled
9
9. Plants without rhizomes, stolons, or tubers; floral scales 0.8-1.3 mm wide
10
9. Plants rhizomatous, stoloniferous, or tuberous; floral scales (1)1.4-3 mm wide
11
10. Plants perennial; culms 50–150 cm long, 2–15 mm wide; floral scales 1.6–1.8 mm long; achenes 0.9 mm long; anthers 0.4–0.5 mm long
10. Plants annual; culms 5-25(105) cm long, 1–2.5(8) mm wide; floral scales 1.3–1.5 mm long; achenes 0.4–0.6 mm long; anthers 0.2–0.3 mm long
11. Robust, rhizomatous, the culm base usually reddish brown; floral scales deciduous; achene coarsely punctate
11. Usually weak, stoloniferous, tuber-bearing, (if robust, then the culm base mostly yellowish or greenish); floral scales persistent; achene puncticulate
12
12. Floral scales yellowish brown to dark brown
12. Floral scales purple to reddish brown, with green midrib
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Acorellus | Acorellus Palla, in W. D. J. Koch, Syn. Deut. Schweiz. Fl., ed. 3. 2557. 1905. | TYPE: Acorellus laevigatus (Linnaeus) Palla 1905. (Cyperus laevigatus Linnaeus 1771.) Lectotypified by Goetghebeur, Bull. Soc. Roy. Bot. Belgique 122: 111. 1989. | |
| Anosporum | Anosporum Nees von Esenbeck, Linnaea 9: 287. 1834. | TYPE: Anosporum monocephalum (Roxburgh) Nees von Esenbeck (Cyperus monocephalus Roxburgh) | |
| Ascolepis | Ascolepis Nees von Esenbeck, in Steudel, Syn. Pl. Glumac. 2: 105. 1855, nom. cons. | TYPE: Ascolepis eriocauloides (Steudel) Nees von Esenbeck 1855, typ. cons. (Kyllinga eriocauloides Steudel 1842.) | |
| Ascopholis | Ascopholis C. E. C. Fischer, Bull. Misc. Inform. Kew 1931: 104. 1931. | TYPE: Ascopholis gamblei C. E. C. Fischer 1931. | |
| Atomostylis | Atomostylis Steudel, Syn. Pl. Glumac. 2: 315. 1855. | TYPE: Atomostylis cyperiformis Steudel Lectotypified by Goetghebeur, Bull. Soc. Roy. Bot. Belgique 122: 108. 1989. | |
| Borabora | Borabora Steudel, Syn. Pl. Glumac. 2: 71. 1854. | TYPE: Borabora cyperoidea Steudel | |
| Chlorocyperus | Chlorocyperus Rikli, Jahrb. Wiss. Bot. 27: 563. 1895. | TYPE: = Pycreus Palisot de Beauvois 1816. | |
| Cylindrolepis | Cylindrolepis Boeckeler, Bot. Centralbl. 39: 73. 1889. | TYPE: Non designatus. | |
| Diclidium | Diclidium Schrader ex Nees von Esenbeck, in Martius, Fl. Bras. 2(1): 51. 1842. | TYPE: Diclidium ferox (Richard) Nees von Esenbeck (Cyperus ferox Richard) Lectotypified by Kern, in van Steenis, Fl. Males. 7: 645. 1974. = Torulinium Desvaux ex Hamilton 1825, by lectotypification. | |
| Didymia | Didymia Philippi, Bot. Jahrb. Syst. 8: 57, t. 1. 1886. | TYPE: Didymia cyperomorpha Philippi 1886. | |
| Distimus | Distimus Rafinesque, J. Phys. Chim. Hist. Nat. Arts 89: 105. 1819. | TYPE: Cyperus flavescens Linnaeus 1753. Lectotypified by Huygh et al., Taxon 59: 1886. 2010. | |
| Duval-Jouvea | Duval-Jouvea Palla, in W. D. J. Koch, Syn. Deut. Schweiz. Fl., ed. 3. 3: 2555. 1905. | TYPE: Duval-Jouvea pilosa (Vahl) Palla (Cyperus pilosus Vahl) Lectotypified by Goetghebeur, Bull. Soc. Roy. Bot. Belgique 122: 111. 1989. | |
| Epiphystis | Epiphystis Trinius, Fund. Agrost. 97. 1820. | TYPE: Epiphystis ophiuroides Trinius | |
| Eucyperus | Eucyperus Rikli, Jahrb. Wiss. Bot. 27: 568. 1895. | TYPE: Eucyperus diffusus (Vahl) Rikli 1895. (Cyperus diffusus Vahl 1806.) Lectotypified by Huygh et al., Taxon 59: 1886. 2010.. | |
| Galilea | Galilea Parlatore, Fl. Palerm. 1: 297. 1845. | TYPE: Galilea mucronata (Linnaeus) Parlatore (Schoenus mucronatus Linnaeus) | |
| Hedychloe | Hedychloe Rafinesque, Ann. Nat. 16. 1820. | TYPE: Hedychloe fragrans Rafinesque 1820, nom. illegit. (Kyllinga pumila Michaux 1803.) | |
| Hemicarpha | Hemicarpha Nees von Esenbeck, Linnaea 9: 287. Jun 1834; Nees von Esenbeck ex Arnott, Edinburgh New Philos. J. 17: 263. Oct 1834. | TYPE: Hemicarpha isolepis Nees von Esenbeck 1834, nom. illegit. (Scirpus hemisphaericus Roth 1821.) | |
| Hydroschoenus | Hydroschoenus Zollinger & Moritzi, in Moritzi, Syst. Verz. 95. 1846. | TYPE: Hydroschoenus kyllingioides Zollinger & Moritzi | |
| Hypaelyptum | Hypaelyptum Vahl, Enum. Pl. 2: 283. 1805, nom. rej. vs. Lipocarpha R. Brown 1818. | TYPE: Hypaelyptum filiforme Vahl 1805. Typified by Panagrahi, Taxon 34: 511. 1985. | |
| Juncellus | Juncellus (Grisebach) C. B. Clarke, in Hooker f., Fl. Brit. Ind. 6: 594. 1893. | BASIONYM: Cyperus Linnaeus, sect. Juncellus Grisebach, Fl. Brit. W.I. 562. 1864. | TYPE: Cyperus mucronatus Rottbøll |
| Kyllinga | Kyllinga Rottbøll, Descr. Icon. Rar. Pl. 12. 1773, nom. cons. vs. Kyllinga Adanson 1763. | TYPE: Kyllinga nemoralis (J. R. Forster & G. Forster) Dandy ex Hutchinson & Dalziel 1936, typ. cons. (Thryocephalon nemorale J. R. Forster & G. Forster 1775.) | |
| Lipocarpha | Lipocarpha R. Brown, in Tuckey, Narr. Exped. Zaire 459. 1818, nom. cons. vs. Hypaelyptum Vahl 1805. | TYPE: Lipocarpha argentea R. Brown ex Nees von Esenbeck 1834, nom. illegit. (Hypaelyptum argenteum Vahl 1805, nom. illegit.; Scirpus senegalensis Lamarck 1791; Lipocarpha senegalensis (Lamarck) T. Durand & H. Durand 1909.) | |
| Lyprolepis | Lyprolepis Steudel, Syn. Pl. Glumac. 2: 130. 1855. | TYPE: Lyprolepis denudata Steudel 1855. | |
| Mariscopsis | Mariscopsis Chermezon, Bull. Mus. Hist. Nat. (Paris) 25: 60. 1919. | TYPE: Mariscopsis suaveolens Chermezon | |
| Mariscus | Mariscus Vahl, Enum. Pl. 2: 372. 1805, nom. cons. vs. Mariscus Scopoli 1754, et vs. Mariscus Gaertner 1788. | TYPE: Mariscus capillaris (Swartz) Vahl (Schoenus capillaris Swartz) | |
| Miegia | Miegia Schreber, Gen. Pl. 786. 1791. | TYPE: = Remirea Aublet 1775. | |
| Opetiola | Opetiola Gaertner, Fruct. Sem. Pl. 1: 14. 1788. | TYPE: Opetiola myosuroides Gaertner | |
| Oxycaryum | Oxycaryum Nees von Esenbeck, in Martius, Fl. Bras. 2(1): 90. 1842. | TYPE: Oxycaryum schomburgkianum Nees von Esenbeck 1842. | |
| Papyrus | Papyrus Willdenow, Abh. Koenigl. Akad. Wiss. Berlin 1812-1813: 70. 1816. | TYPE: Papyrus antiquorum Willdenow (Cyperus papyrus Linnaeus) Lectotypified by Farr et al., Index Nom. Gen. 1255. 1979. | |
| Pterocyperus | Pterocyperus Opiz, Seznam 80. 1852. | TYPE: Pterocyperus esculentus (Linnaeus) Opiz 1852. (Cyperus esculentus Linnaeus 1753.) = Cyperus Linnaeus 1753, by lectotypification. | |
| Pycreus | Pycreus Palisot de Beauvois, Fl. Oware 2: 48, pl. 86(2). 1816. | TYPE: Pycreus polystachyos (Rottbøll) Palisot de Beauvois 1816. (Cyperus polystachyos Rottbøll 1772.) | |
| Queenslandiella | Queenslandiella Domin, Biblioth. Bot. 85: 415, t. 11(7-13). 1915. | TYPE: Queenslandiella mira Domin 1915. | |
| Remirea | Remirea Aublet, Hist. Pl. Guiane 44. 1775. | TYPE Remirea maritima Aublet | |
| Rikliella | Rikliella Raynal, Adansonia, ser. 2. 13: 154. 1973. | TYPE: Rikliella rehmannii (Ridley) Raynal 1973 (Scirpus rehmannii (Ridley 1884) | |
| Sorostachys | Sorostachys Steudel, Syn. Pl. Glumac. 2: 71. 1854. | TYPE: Sorostachys kyllingioides Steudel | |
| Sphaeromariscus | Sphaeromariscus E. G. Camus, in Lecomte, Notul. Syst. (Paris) 1: 239. 1910. | TYPE: Sphaeromariscus microcephalus (C. Presl) E. G. Camus (Mariscus microcephalus C. Presl) | |
| Thryocephalon | Thryocephalon J. R. Forster & G. Forster, Charact. Gen. 129, pl. 65. 1775. | TYPE: Thryocephalon nemorale J. R. Forster & G. Forster 1775. = Kyllinga Rottbøll 1773, by conservation of the type. | |
| Torreya | Torreya Rafinesque, J. Phys. Chim. Hist. Nat. Arts 89: 105. 1819, non Rafinesque 1818; nom. rej. vs. Torreya Arnott 1838. | TYPE: Torreya cespitosa Rafinesque 1819. Lectotypified by Huygh et al., Taxon 59: 1888. 2010. | |
| Torulinium | Torulinium Desvaux ex Hamilton, Prodr. Pl. Ind. Occid. 15. 1825. | TYPE: Torulinium ferox (Richard) Hamilton (Cyperus ferox Richard) Lectotypified by Koyama, in R. A. Howard, Fl. Less. Antill., Monocot. 286. 1979. | |
| Trentepohlia | Trentepohlia Boeckeler, Bot. Zeitung (Berlin) 16: 249. 1858, non Roth 1800, nec Martius 1817, nec Harvey 1833. | TYPE: Trentepohlia bifoliata Boeckeler | |
| Tunga | Tunga Roxburgh, Fl. Ind. 1: 187. 1820. | TYPE: Tunga triceps Roxburgh 1820. Typified by Goetghebeur & Van den Borre, Wageningen Agric. Univ. Pap. 89: 7. 1989. |