Flora of North America species comparison

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Bernardia incana

western bernardia
Habit Shrubs to 1.5 m. Leaves: stipules persistent, yellowish brown to black, base thickened, with dark resinous exudate; petiole 1.5–2.5(–3.4) mm; blade usually broadly elliptic to suborbiculate, rarely cuneate, 0.8–2.5 × 0.3–1.1 cm, margins revolute, crenate, laminar glands (0–)2–4(–6), abaxial surface grayish white, densely appressed stellate-pubescent, adaxial surface green, glabrate; veins prominent abaxially.
Inflorescences

staminate thyrses 5–20 mm.
Staminate flowers

stamens (3–)5–7, nectary glands peltiform.
Pistillate flowers

pistil 3-carpellate;

styles 3, lobulate adaxially.
Capsules

6 mm, 3-lobed.

Bernardia incana
Phenology Flowering spring–summer; fruiting summer–fall.
Habitat Protected slopes in desert canyon washes.
Elevation 700–1600 m. (2300–5200 ft.)
Distribution
from FNA
AZ; CA; Mexico (Baja California, Chihuahua, Sonora)
Discussion

As indicated by V. W. Steinmann and R. S. Felger (1997), Bernardia incana is readily distinguished from B. myricifolia, with which it has often been merged (for example, G. L. Webster 1993b), by its dark persistent stipules that are thickened by a dried, resinous exudate. Within the flora area, B. incana occupies a mostly montane Sonoran Desert range in southern Arizona and California (extending just into the southern Mojave Desert), with outlying populations in the Grand Canyon. No specimens have been located to document a reported distribution in Nevada, but it is present to within a few miles of the border along the Grand Wash Cliffs in Arizona.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 183.
Parent taxa Euphorbiaceae > Bernardia
Sibling taxa
B. myricifolia, B. obovata
Name authority C. V. Morton: J. Wash. Acad. Sci. 29: 376. (1939)
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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