Flora of North America species comparison

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Orbexilum onobrychis

French-grass
Habit Herbs to 10 dm; with ligneous rhizome.
Stems

pubescent, glabrescent.
Leaves

pinnately 3-foliolate;

stipules lanceolate to linear, 4–9 mm;

petiole 20–90 mm;

leaflet blades lanceolate to elliptic-lanceolate, 40–120 × 15–50 mm, surfaces adaxially sparsely glandular-punctate, sparsely pubescent.
Inflorescences

cylindric, 3–20 cm.
Peduncles

5–15 cm.
Flowers

5–6.5 mm;

calyx 2–3 mm, eglandular or sparsely glandular-punctate, puberulent;

corolla violet to purple, banner rounded.
Legumes

8–12 × 5–5.5 mm, eglandular, papillose or warty.
Seeds

reniform, 4–6 mm.

Orbexilum onobrychis
Phenology Flowering May–Jun.
Habitat Plains, along roadsides, dry, open woods, fallow pastures.
Elevation 200–500 m. (700–1600 ft.)
Distribution
from FNA
IA; IL; IN; KY; MO; NC; OH; TN; VA
[WildflowerSearch map]
[BONAP county map]
Discussion

Orbexilum onobrychis is apparently extirpated from South Carolina.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Orbexilum
Sibling taxa
O. lupinellus, O. macrophyllum, O. pedunculatum, O. psoralioides, O. simplex, O. stipulatum, O. virgatum
Synonyms Psoralea onobrychis, Lotodes onobrychis, O. latifolium, P. latifolia
Name authority (Nuttall) Rydberg in N. L. Britton et al.: N. Amer. Fl. 24: 5. (1919)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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