Contains 5 accepted taxa overall.
Characteristics
Classification
Citation
NAJAS Linnaeus, Sp. Pl. 1015. 1753.
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TYPE: Najas marina Linnaeus
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Najas filifolia | NEEDLELEAF WATERNYMPH; SLENDER NAIAD | Native Threatened-State OBL (NWPL) | ||
| Najas guadalupensis | SOUTHERN WATERNYMPH | Native OBL (NWPL) | ||
| Najas marina | SPINY WATERNYMPH | Native OBL (NWPL) | ||
| Najas minor | BRITTLE WATERNYMPH | Not Native OBL (NWPL) | ||
| Najas wrightiana | WRIGHT'S WATERNYMPH | Native OBL (NWPL) |
[Family identification key]
1. Internodes usually with prickles; leaf midrib with prickles; testa pitted, 10-15 cell layers thick
1. Internodes and leaf midrib without prickles; testa smooth or pitted, 3 cell layers thick
2
2. Leaf margins minutely serrulate, usually >15 teeth per side, the teeth unicellular
2. Leaf margins conspicuously serrulate, usually <16 teeth per side, the teeth multicellular
3
3. Leaves spreading to ascending with age; seeds not recurved
3. Leaves usually becoming recurved with age; seeds recurved
4
4. Leaves becoming laxly stiff, with 5-9 teeth per side; seeds strongly recurved, greenish brown, the areoles regularly arranged in ca. 20 longitudinal rows, not ladderlike, 4-angled, longer than broad, end walls raised
4. Leaves stiff, with 7-15 teeth per side; seeds slightly recurved, purplish, testa dull, 3 cell layers thick, pitted, the areoles regularly arranged in ca. 15 longitudinal rows, ladderlike, 4-angled, broader than long, end walls not raised
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Aglae | Aglae Dulac, Fl. Hautes-Pyrénées 43 (as 'Aegle'), 531. 1867. | TYPE: = Caulinia Willdenow 1801. | |
| Caulinia | Caulinia Willdenow, Mem. Acad. Roy. Sci. Hist. (Berlin) 1798: 87. 1801. | TYPE: Caulinia fragilis Willdenow, nom. illegit. (Najas minor Allioni; Caulinia minor (Allioni) Cosson & Germain de Saint-Pierre) | |
| Fluvialis | Fluvialis Persoon, Syn. Pl. 2: 530. 1806, non Seguier 1754. | TYPE: = Caulinia Willdenow 1801. | |
| Fluvialis | Fluvialis Seguier, Pl. Veron. 3: 99. 1754. | TYPE: = Najas Linnaeus 1753. | |
| Ittnera | Ittnera C. C. Gmelin, Fl. Bad. 3: 590. 1808. | TYPE: = Najas Linnaeus 1753. |