Contains 6 accepted taxa overall.
Characteristics
Classification
Citation
TRIDENS Roemer & Schultes, Syst. Veg. 2: 34, 599. 1817.
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TYPE: Tridens quinquefidus (Pursh) Roemer & Schultes (Poa quinquefida Pursh)
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Tridens ambiguus | PINEBARREN FLUFFGRASS | Native FACW (NWPL) FACW (DEP) | ||
| Tridens carolinianus | CAROLINA FLUFFGRASS | Native | ||
| Tridens eragrostoides | LOVEGRASS TRIDENS | Native | ||
| Tridens flavus var. chapmanii | CHAPMAN'S PURPLETOP TRIDENS | Native | ||
| Tridens flavus var. flavus | TALL REDTOP; PURPLETOP TRIDENS | Native FACU (NWPL) | ||
| Tridens strictus | LONGSPIKE TRIDENS | Native FACW (NWPL) FACW (DEP) |
Identification Key
1. Panicles 0.3-4 cm wide, the primary branches ascending to strict
2
1. Panicles 1-20 cm wide, the primary branches ascending, spreading, reflexed, or pendent
3
2. Plant with elongate rhizomes; spikelets 7-10 mm long, the glumes subequal to the lemmas; lemmas 4-5 mm long
2. Plant densely cespitose; spikelets 4-7 mm long, the glumes longer than and exceeding the lemmas; lemmas (2)3-3.5 mm long
3. Lower glume (1)1.5-2.5 mm long; lemma lateral veins rarely reaching the distal margin
3. Lower glume 2.5-4.5 mm long; lemma lateral veins sometimes excurrent as short points
4
4. Panicle 7-17(20) cm long; pedicels 0.1-0.9 mm long; lower glume 4-4.5 mm long
4. Panicle 15-40 cm long; pedicels 3-8 mm long; lower glume 2.5-3 mm long
5
5. Panicles nodding; pulvini inconspicuously or conspicuously hairy, the hairs confined to the upper side of the branches
5. Panicles erect throughout, the pulvini conspicuously hairy completely around the base of the branches
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Antonella | Antonella Caro, Dominguezia 2: 18. 1981. | TYPE: Antonella nicorae (Anton) Caro (Tridens nicorae Anton) | |
| Gosweilerochloa | Gosweilerochloa Renvoize, Kew Bull. 33: 525. 1979. | TYPE: Gosweilerochloa deliculata Renvoize | |
| Rhombolytrum | Rhombolytrum Link, Hort. Berol. 2: 296. 1833. | TYPE: Rhombolytrum rhomboideum Link | |
| Tricuspis | Tricuspis Palisot de Beauvois, Ess. Agrostogr. 77, 179. 1812, non Persoon 1806. | TYPE: Tricuspis caroliniana Palisot de Beauvois = Tridens Roemer & Schultes 1817. | |
| Windsoria | Windsoria Nuttall, Gen. N. Amer. Pl. 1: 70. 1818. | TYPE: Windsoria poaeformis Nuttall, nom. illegit. (Poa quinquefida Pursh; Poa sesleroides Michaux 1803, non Allioni 1785) |