Difference between revisions of "Ephedra nevadensis"
Proc. Amer. Acad. Arts 14: 298. 1879.
Common names: Nevada ephedra
Basionym: Ephedra antisyphilitica S. Watson
Synonyms: Ephedra antisyphilitica var. pedunculata S. WatsonEphedra nevadensis var. paucibracteata Stapf
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>erect, 0.25–1.5 m. <b>Bark</b> gray, fissured. <b>Branches</b> alternate or whorled, rigid, angle of divergence about 45°. <b>Twigs</b> pale green, becoming yellow with age, not viscid, glaucous, with numerous longitudinal grooves; internodes 1–6 cm. <b>Terminal</b> buds conic, 1–3 mm, apex obtuse. <b>Leaves</b> opposite (rarely in whorls of 3), 2–4(–8) mm, connate to 1/2–3/4 their length; bases thickened, brown, completely deciduous; apex obtuse. <b>Pollen</b> cones 1–several at node, ellipsoid, 4–8 mm, sessile or on short peduncles with 2 pairs of basal bracts; bracts opposite, 5–9 pairs, yellow to light brown, obovate, 3–4 × 2–3 mm, membranous; bracteoles slightly exceeding bracts; sporangiophores 3–5 mm, exserted to 1/4–1/2 their length, with 6–9 sessile to short-stalked (less than 1 mm) microsporangia. <b>Seed</b> cones 1–several at node, nearly globose, 5–11 mm, on long peduncles, with 1–2 pairs of basal bracts; bracts opposite, 3–5 pairs, nearly circular, 4–8 × 3–6 mm, herbaceous, with light brown to yellow-green center, occasionally pinkish tinged, margins entire. <b>Seeds</b> (1–)2, ellipsoid, 6–9 × 2–4 mm, brown, smooth. <b>2n</b> = 14, 28.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Coning late winter–midspring. | ||
|habitat=Dry, rocky slopes and hills, rarely in sandy flat areas | |habitat=Dry, rocky slopes and hills, rarely in sandy flat areas | ||
|elevation=700–1900 m | |elevation=700–1900 m | ||
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|basionyms=Ephedra antisyphilitica | |basionyms=Ephedra antisyphilitica | ||
|family=Ephedraceae | |family=Ephedraceae | ||
| + | |phenology=Coning late winter–midspring. | ||
|habitat=Dry, rocky slopes and hills, rarely in sandy flat areas | |habitat=Dry, rocky slopes and hills, rarely in sandy flat areas | ||
|elevation=700–1900 m | |elevation=700–1900 m | ||
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|publication year=1879 | |publication year=1879 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_338.xml |
|genus=Ephedra | |genus=Ephedra | ||
|species=Ephedra nevadensis | |species=Ephedra nevadensis | ||
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-->[[Category:Treatment]][[Category:Ephedra]] | -->[[Category:Treatment]][[Category:Ephedra]] | ||
Revision as of 13:17, 27 July 2019
Shrubs erect, 0.25–1.5 m. Bark gray, fissured. Branches alternate or whorled, rigid, angle of divergence about 45°. Twigs pale green, becoming yellow with age, not viscid, glaucous, with numerous longitudinal grooves; internodes 1–6 cm. Terminal buds conic, 1–3 mm, apex obtuse. Leaves opposite (rarely in whorls of 3), 2–4(–8) mm, connate to 1/2–3/4 their length; bases thickened, brown, completely deciduous; apex obtuse. Pollen cones 1–several at node, ellipsoid, 4–8 mm, sessile or on short peduncles with 2 pairs of basal bracts; bracts opposite, 5–9 pairs, yellow to light brown, obovate, 3–4 × 2–3 mm, membranous; bracteoles slightly exceeding bracts; sporangiophores 3–5 mm, exserted to 1/4–1/2 their length, with 6–9 sessile to short-stalked (less than 1 mm) microsporangia. Seed cones 1–several at node, nearly globose, 5–11 mm, on long peduncles, with 1–2 pairs of basal bracts; bracts opposite, 3–5 pairs, nearly circular, 4–8 × 3–6 mm, herbaceous, with light brown to yellow-green center, occasionally pinkish tinged, margins entire. Seeds (1–)2, ellipsoid, 6–9 × 2–4 mm, brown, smooth. 2n = 14, 28.
Phenology: Coning late winter–midspring.
Habitat: Dry, rocky slopes and hills, rarely in sandy flat areas
Elevation: 700–1900 m
Distribution
Ariz., Calif., Nev., Oreg., Utah.
Discussion
Selected References
None.
Lower Taxa
None.