Difference between revisions of "Ephedra aspera"
Proc. Amer. Acad. Arts 18: 157. 1883.
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|name=Ephedra nevadensis var. aspera | |name=Ephedra nevadensis var. aspera | ||
|authority=(Engelmann ex S. Watson) L. D. Benson | |authority=(Engelmann ex S. Watson) L. D. Benson | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ephedra peninsularis | |name=Ephedra peninsularis | ||
|authority=I. M. Johnston | |authority=I. M. Johnston | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ephedra reedii | |name=Ephedra reedii | ||
|authority=Cory | |authority=Cory | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Ephedraceae;Ephedra;Ephedra aspera | |hierarchy=Ephedraceae;Ephedra;Ephedra aspera | ||
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name=Ephedra aspera | name=Ephedra aspera | ||
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|authority=Engelmann ex S. Watson | |authority=Engelmann ex S. Watson | ||
|rank=species | |rank=species | ||
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|publication year=1883 | |publication year=1883 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_514.xml |
|genus=Ephedra | |genus=Ephedra | ||
|species=Ephedra aspera | |species=Ephedra aspera | ||
Latest revision as of 20:23, 5 November 2020
Shrubs erect, 0.5–1.5 m. Bark gray, cracked and fissured. Branches opposite or whorled, rigid, angle of divergence about 30°. Twigs pale to dark green, becoming yellow with age, not viscid, slightly to strongly scabrous, with numerous longitudinal grooves; internodes 1–6 cm. Terminal buds conic, 1–2 mm, apex obtuse. Leaves opposite (rarely in whorls of 3), 1–3(–5) mm, connate to 1/2–7/8 their length; bases thickened, brown, shredding with age, ± persistent; apex obtuse. Pollen cones 2 (rarely 1 or whorled) at node, obovoid, 4–7 mm, sessile or rarely on short peduncles; bracts opposite, 6–10 pairs, yellow to red-brown, obovate, 3–4 × 2–3 mm, membranous; bracteoles slightly exceeding bracts; sporangiophores 4–5 mm, 1/2 exserted, with 4–6 sessile to short-stalked (less than 1 mm) microsporangia. Seed cones usually 2 at node, ovoid, 6–10 mm, sessile or on short, scaly peduncles; bracts opposite, 5–7 pairs, circular, 4–7 × 2–4 mm, membranous, with red-brown thickened center and base, margins entire. Seed 1, ellipsoid, 5–8 × 2–4 mm, light brown to brown, smooth to slightly scabrous.
Phenology: Coning March–April.
Habitat: Dry rocky slopes, ravines, and fans
Elevation: 500–1800 m
Distribution
Ariz., Calif., N.Mex., Tex., n Mexico.
Discussion
Selected References
None.