|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Ephedraceae||View Description||Dichotomous Key|
|Genus: Ephedra||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Ephedra trifurca S. Watson
Stem: 0.4--2(4.5) m; twig pale green, aging yellow to gray-green; uppermost bud thorn-like; pith dark brown. Leaf: generally 3 per node, (5)7--15 mm; tips +- spine-like; sheath fibrous, persistent, aging gray; base not swollen. Pollen Cone: 1--many per node, 6--10 mm; bracts 3 per node. Seed Cone: 1--several per node, 10--14 mm, obovoid, stalk 2--4 mm, straight, with reduced basal bracts; distal bracts 3 per node, 8--12 mm, papery, margins inrolled, +- entire, broad-scarious, translucent, center round, red-brown, stalk-like base present. Seed: 1(3), 9--15 mm, > 3 × as long as wide, beaked. Chromosomes: 2n=14.
Ecology: Creosote-bush scrub, sandy washes, flats, stabilized dunes; Elevation: -30--2100 m. Bioregional Distribution: D; Distribution Outside California: to Texas, Mexico. Note: Cones present Dec--Apr.
Unabridged Note: RSA383822 (SCo) belongs to Ephedra trifurca, but probably was from cultivation pl.
eFlora Treatment Author: Stefanie M. Ickert-Bond
Jepson Online Interchange
Previous taxon: Ephedra nevadensis
Next taxon: Ephedra viridis
Citation for this treatment: Stefanie M. Ickert-Bond 2016. Ephedra trifurca, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=24286, accessed on April 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 29, 2016.