Flora of North America species comparison

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Eysenhardtia orthocarpa var. orthocarpa
Photo is of parent taxon
Habit Shrubs, 1.5–5 m. Leaves (3–)5–14 cm; leaflets (13–)17–35(–47), blades oblong to narrowly oblong, 5–20 mm, surfaces pubescent, abaxially with some glands much larger than others, largest randomly scattered.
Racemes

(3–)5–10(–16) cm.
Flowers

calyx tube 2–3.5 mm, lobes acute, 0.3–0.8 mm;

corolla 6–10 mm;

style with gland near tip.
Legumes

reflexed, falcate to straight, oblong-lanceoloid, 10–16 × 2.5–4 mm, length more than or equal to 3 times width, entire fruit appearing flattened.
Seeds

filling ca. 1/2 of legume, strongly compressed, obovoid to oblanceolate, edges sharp.

Eysenhardtia orthocarpa var. orthocarpa
Phenology Flowering May–Aug.
Habitat Semi-desert grasslands, shrub­lands, open pine-oak-juniper woodlands or savannas, rocky soils.
Elevation [100–]1100–1800[–2000] m. ([300–]3600–5900[–6600] ft.)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Jalisco, Sinaloa, Sonora)
Discussion

Plants of Eysenhardtia orthocarpa in the United States have been called E. polystachya (T. H. Kearney and R. H. Peebles 1960; W. C. Martin and C. R. Hutchins 1980); that species is native only to central and southern Mexico (J. M. Lang and D. Isely 1982; R. McVaugh 1987).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Eysenhardtia > Eysenhardtia orthocarpa
Synonyms E. amorphoides var. orthocarpa
Name authority unknown
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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