TREATMENT FROM THE JEPSON MANUAL (1993) |
previous taxon |
next taxon
Jepson Interchange (more information) |
|
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY |
Shrub or tree-like, densely branched, generally dioeciousRetrieve key for EPHEDRACEAE
Stem generally erect, < 2 m, jointed; node conspicuous, internode > leaf; bark with irregular, longitudinal cracks, generally gray; twigs whorled, grooved, greenish and photosynthetic when young, glaucous, glabrous to scabrous, sometimes thorn-like
Leaves 23 per node, not green; bases ± fused into sheath, thickening with age; tips often ± deciduous
Pollen cones 15 per node, generally short-stalked, generally spheric; bracts generally flexible, lower sterile, upper subtending 28 stamen-like structures
Seed cones generally 13 per node, sessile or stalk < 5 mm; bracts generally flexible, lower sterile, upper enclosing 13 seeds
Seed spheric to cylindric, smooth or furrowed, generally angled at top, generally brown
Genera in family: 1 genus, 42 species: North America, South America, Medit, Asia
Reference: [Cutler 1939 Ann Mo Bot Gar 26:373424]