Contains 4 accepted taxa overall.
Characteristics
Classification
Citation
SPHENOPHOLIS Lamson-Scribner, Rhodora 8: 142. 1906.
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TYPE: Sphenopholis obtusata (Michaux) Lamson-Scribner (Aira obtusata Michaux) Substitute name for Reboulea Kunth 1830, non Reboulia Raddi 1818.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Sphenopholis filiformis | LONGLEAF WEDGESCALE | Native FACU (NWPL) | ||
| Sphenopholis nitida | SHINY WEDGESCALE | Native | ||
| Sphenopholis obtusata | PRAIRIE WEDGESCALE | Native FAC (NWPL) | ||
| Sphenopholis pensylvanica | SWAMP WEDGESCALE | Native OBL (NWPL) OBL (DEP) |
Identification Key
1. Spikelets 4.5-9.5 mm long; distal lemma awns (2)3-7(9) mm long
1. Spikelets 2.1-5.2 mm long; distal lemma awns usually absent or sometimes 0.1-3 mm long
2
2. Leaf blades 0.3-1.5(2) mm wide, involute
2. Leaf blades (1)2-8 mm wide, flat to slightly involute
3
3. Lower glume 0.3-0.4 mm wide, 1/3 - 1/2 as wide as the upper glume; distal lemma margins scabrous
3. Lower glume 0.1-0.3 mm wide, <1/3 as wide as the upper glume; distal lemma margins mostly smooth and scabrous only at the tip
4
4. Panicles usually nodding, not spicate, the spikelets usually loosely arranged; upper glumes not subcucullate, 3-5 times as long as wide;
4. Panicles usually erect, often spicate, the spikelets usually densely arranged; upper glumes subcucullate, 2-3 times as long as wide;
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Colobanthus | Colobanthus (Trinius) Spach, Hist. Nat. Vég. 13: 163. 1846, non Bartling 1830. | BASIONYM: Trisetum Persoon, sect. Colobanthus Trinius, Mém. Acad. Imp. Sci. Saint-Pétersbourg, Ser. 6, Sci. Math., Seconde Pt. Sci. Nat. 1: 66. 1830. | TYPE: Koeleria pennsylvanica (Sprengel) de Candolle (Aira pennsylvanica Sprengel) Lectotypified by Hitchcock, U.S.D.A. Bull. 772: 111. 1920. |
| Reboulea | Reboulea Kunth, Revis. Gramin. 341. 1830, non Reboulia Raddi 1818. | TYPE: Reboulea gracilis Kunth, nom. illegit. (Aira obtusata Michaux; Reboulea obtusata (Michaux) A. Gray) = Sphenopholis Lamson-Scribner 1906. |