Contains 15 accepted taxa overall.

Characteristics
Crotalaria L.
RATTLEBOX
Classification
FABALES
Crotalaria
Citation
CROTALARIA Linnaeus, Sp. Pl. 714. 1753, nom. cons.
-
TYPE: Crotalaria lotifolia Linnaeus, typ. cons.
Distribution Map Present

This species have been reported in the counties highlighted.

Species
Scientific Name Common Name Herbarium Specimens Status Photos
Crotalaria alata WINGED RATTLEBOX Not Native
Crotalaria avonensis AVON PARK RATTLEBOX; AVON PARK HAREBELLS Native Rare-State Endangered-US
Crotalaria incana SHAKESHAKE Not Native FACU (NWPL)
Crotalaria juncea SUNN HEMP Not Native
Crotalaria lanceolata LANCELEAF RATTLEBOX Not Native
Crotalaria ochroleuca SLENDERLEAF RATTLEBOX Not Native
Crotalaria pallida var. obovata SMOOTH RATTLEBOX Not Native FACU (NWPL)
Crotalaria pumila LOW RATTLEBOX Native
Crotalaria purshii PURSH'S RATTLEBOX Native
Crotalaria retusa RATTLEWEED Not Native UPL (NWPL)
Crotalaria rotundifolia RABBITBELLS Native FACU (NWPL)
Crotalaria spectabilis SHOWY RATTLEBOX Not Native FACU (NWPL)
Crotalaria trichotoma WEST INDIAN RATTLEBOX Not Native
Crotalaria verrucosa BLUE RATTLEBOX Not Native
Crotalaria virgulata subsp. grantiana GRANT'S RATTLEBOX Not Native
Identification Key
1.  Leaves 3-foliolate
2
1.  Leaves 1-foliolate
8
2.  Leaflets linear to linear-lanceolate
3
2.  Leaflets elliptic to obovate
4
3.  Calyx 3-3.5 mm long; corolla 8-10 mm long; fruit 2-4 cm long, 0.6-0.8 cm wide, falcate
3.  Calyx 6-8 mm long; corolla 18-20 mm long; fruit (3-)4-7 cm long, 1.5-2 cm wide, generally straight
4.  Petioles 1-10 mm long; leaflets 5-16(-30) mm long; fruit 8-15 mm long
5
4.  Petioles 12-45 mm long; larger leaflets 12-55 mm long; fruit 14-45 mm long
6
5.  Leaflet underside strigulose; inflorescence with 2-20 flowers; fruit 1.9-2.2 times long as wide
5.  Leaflet underside glabrate to pilosulous; inflorescence with 1-3 flowers, sometimes fasciculate; fruit 1.3-1.7 times long as wide
6.  Younger stems pilose to pubescent; fruit pilose
6.  Younger stems strigose; fruit glabrate, puberulent, to strigulose
7
7.  Leaflets obovate, 1-2 times long as wide; bracts subtending flowers quickly deciduous; calyx strigulose; fruit 5-6 mm wide
7.  Leaflets elliptic, 3-4 times long as wide; ca. 1 mm-long bracts subtending flowers persistent; calyx glabrous to puberulent; fruit 8-12 mm wide
8.  Leaf blade ovate, abruptly narrowed and cuneate at the base; corolla white to violet
8.  Leaf blade linear, elliptic, oblong, to obovate, rounded to gradually narrowed to the petiole; corolla yellow
9
9.  Stipules absent or not decurrent; leaf blades 0.8-8 cm wide; corolla 1.7-3.5 cm long
10
9.  Stipules absent or decurrent-winged; leaf blades 0.2-4(-5) cm wide; corolla 0.7-1.4 cm long
12
10.  Leaf blade narrowly elliptic to linear-lanceolate, 6-8 times longer than wide; fruit pubescent
10.  Leaf blade obovate, 2-4 times longer than wide; fruit glabrous
11
11.  Leaf blade to 3.5(-4) cm wide; stipules quickly deciduous; bracts subtending flowers subulate, 1-2 mm long, often shed by anthesis
11.  Leaf blade to 8 cm wide; stipules persistent, deltoid; bracts subtending flowers deltoid-ovate, 4-10 mm long, persistent
12.  Leaf blades mostly 1-5 cm wide; fruit 3-4 cm long
12.  Leaf blades mostly 0.2-1.5 cm wide; fruit 1-3 cm long
13
13.  Leaf blades linear to lanceolate (sometimes ovate towards the base), glabrous on the upper surface
13.  Leaf blades linear, elliptic, to obovate, strigose on the upper surface
14.  Stipules absent; keel petal apices short, only slightly twisted distally, slightly incurved back towards upper petal; pubescent style 3-3.5 mm long, curved at the base; mature fruit grayish to purplish brown
14.  Stipules usually persistent, decurrent-winged along the stem; keel petal apices elongate, spirally twisted distally, projected upward and outward; pubescent style 4-7 mm long, bent at near right angle at the base; mature fruit black
Genus Synonyms
Synonym Full Citation Basionym Type
Anisanthera Anisanthera Rafinesque, Fl. Tellur. 2: 60. 1837. TYPE: Non designatus.
Chrysocalyx Chrysocalyx Guillemin et al., Fl. Seneg. Tent. 157. 1831. TYPE: Chrysocalyx ebenoides Guillemin et al. Lectotypified by Cowan, Taxon 8: 59. 1959.
Clavulium Clavulium Desvaux, Ann. Sci. Nat. (Paris) 9: 407. 1826. TYPE: Clavulium pedunculosum (Desvaux) Desvaux (Crotalaria pedunculosa Desvaux)
Goniogyna Goniogyna de Candolle, Ann. Sci. Nat. (Paris) 4: 91. Jan 1825. TYPE: Goniogyna hebecarpa de Candolle Lectotypified by Ali, Taxon 16: 463. 1967.
Heylandia Heylandia de Candolle, Prodr. 2: 12. Nov 1825. TYPE: Heylandia latibrosa (Linnaeus) de Candolle (Hedysarum latebrosum Linnaeus) Lectotypified by Wight & Arnott, Prodr. Fl. Ind. Orient. 180. 1834.
Pentadynamis Pentadynamis R. Brown, in Sturt, Narr. Exped. C. Australia 2(App.): 76. 1849. TYPE: Pentadynamis incana R. Brown
Phyllocalyx Phyllocalyx A. Richard, Tent. Fl. Abyss. 1: 160, t. 34. 1847. TYPE: Phyllocalyx quartinianus A. Richard
Priotropis Priotropis Wight & Arnott, Prodr. Fl. Ind. Orient. 180. 1834. TYPE: Priotropis cytisoides Wight & Arnott
Quirosia Quirosia Blanco, Fl. Filip., ed. 2. 398. 1845. TYPE: Non designatus.