The Gymnosperm Database

 

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Conservation status

Ephedra antisyphilitica

Berlandier ex Meyer 1846

Common names

Clap-weed, popote, tepopote, Cañatilla (Torrey 1858, Stevenson 1993).

Taxonomic notes

Syn: Ephedra antisyphilitica var. brachycarpa Cory; E. occidentalis Torrey ex Parlatore; E. texana Reed (Stevenson 1993).

Description

"Shrubs erect or spreading, 0.25-1 m. Bark gray, slightly cracked and irregularly fissured. Branches alternate or whorled, rigid, angle of divergence about 45°. Twigs green, becoming yellow-green with age, glaucous, not viscid, with numerous longitudinal grooves; internodes 2-5 cm. Terminal buds conic, 1-3 mm, apex obtuse. Leaves opposite, 1-3 mm, connate to 2/3-7/8 their length; bases thickened, brown, completely deciduous; apex obtuse. Pollen cones 1-2 at node, lance-ellipsoid, 5-8 mm, sessile to nearly sessile; bracts opposite, 5-8 pairs, pale green to red, obovate, 2-4 × 2-3 mm, membranous, connate at base; bracteoles slightly exceeding bracts; sporangiophores 4-5 mm, 1/2 exserted, with 4-6 sessile to very short-stalked (less than 1 mm) microsporangia. Seed cones 1-2 at node, ellipsoid, 6-12 mm, sessile to nearly sessile; bracts opposite, 4-6 pairs, ovate, 5-7 × 5-10 mm, connate to 1/8-7/8 their length, inner pairs becoming fleshy and red. Seeds 1(-2), ellipsoid, 6-9 × 2-4 mm, light brown to chestnut, smooth. ... Coning March-April" (Stevenson 1993).

Distribution and Ecology

US: Oklahoma and Texas; Mexico: Nuevo León and San Luis Potosí; at 100-1200 m on dry soils and rocky slopes. "Mexican populations ... are disjunct from those in Texas." (Stevenson 1993).

Big tree

Oldest

Ethnobotany

Torrey (1858) says "the Mexicans ... use a decoction of it as a remedy for gonorrhea."

Observations

Remarks

Citations

Torrey, J. 1858. Botany of the boundary. In W.H. Emory, Report on the United States and Mexican Boundary Survey, Vol. 2, Part 2. Washington, D.C.: A.O.P. Nicholson. Available at www.archive.org, accessed 2009.02.13.

See also

Last Modified 2017-12-29