Difference between revisions of "Ephedra viridis"
Contr. U.S. Natl. Herb. 4: 220. 1893.
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|name=Ephedra nevadensis var. pluribracteata | |name=Ephedra nevadensis var. pluribracteata | ||
|authority=Palmer ex Stapf | |authority=Palmer ex Stapf | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ephedra nevadensis var. viridis | |name=Ephedra nevadensis var. viridis | ||
|authority=(Coville) M. E. Jones | |authority=(Coville) M. E. Jones | ||
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|hierarchy=Ephedraceae;Ephedra;Ephedra viridis | |hierarchy=Ephedraceae;Ephedra;Ephedra viridis | ||
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name=Ephedra viridis | name=Ephedra viridis | ||
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|authority=Coville | |authority=Coville | ||
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|publication year=1893 | |publication year=1893 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V2/V2_506.xml |
|genus=Ephedra | |genus=Ephedra | ||
|species=Ephedra viridis | |species=Ephedra viridis | ||
Revision as of 19:48, 16 December 2019
Shrubs erect, 0.5–1 m. Bark gray, cracked and irregularly fissured. Branches alternate or whorled, rigid, angle of divergence about 30°. Twigs bright green to yellow-green, becoming yellow with age, not viscid, ridges between longitudinal grooves barely papillate, smooth; internodes 1–5 cm. Terminal buds conic, 1–2 mm, apex obtuse. Leaves opposite, 2–5 mm, connate to 1/2–3/4 their length, not photosynthetic; bases thickened, brown, persistent, becoming hard, enlarged, and black; apex setaceous. Pollen cones 2–several at node, obovoid, 5–7 mm, sessile; bracts opposite, 6–10 pairs, light yellow and slightly reddened, ovate, 2–4 × 2–3 mm, membranous, slightly connate at base; bracteoles slightly exceeding bracts; sporangiophores 2–4 mm, 1/4–1/2 exserted, with 5–8 sessile to nearly sessile microsporangia. Seed cones 2–several at node, obovoid, 6–10 mm, sessile or on short, scaly peduncles; bracts opposite, 4–8 pairs, ovate, 4–7 × 2–4 mm, membranous or papery, with yellow center and base, margins entire. Seeds 2, ellipsoid, 5–8 × 2–4 mm, light brown to brown, smooth. 2n = 28.
Phenology: Coning spring.
Habitat: Dry rocky slopes and canyon walls
Elevation: 800–2500 m
Distribution
Ariz., Calif., Colo., Nev., N.Mex., Oreg., Utah, Wyo.
Discussion
Selected References
None.