EcoFlora - Ephedra

Ephedra
Family: Ephedraceae	FNA Resources Dennis Wm. Stevenson in Flora of North America (vol. 2) Shrubs or occasionally clambering vines. Branches jointed, yellowish green to olive-green when young. Leaves opposite or in whorls of 3, apex obtuse to setaceous from an adaxial-median thickening. Pollen cones lanceoloid or ellipsoid to ovoid or obovoid. Seed cones ellipsoid to ovoid, obovoid, or nearly globose. Seeds ellipsoid to globose, yellow to dark brown, smooth to scabrous or furrowed. x = 7. The species of Ephedra are presented here in alphabetical order for three reasons. First, no modern monographic treatment has been written for all species of the genus since that of O. Stapf (1889). Second, it appears that the species occurring in North America belong to at least three wholly different groups within the genus, but this is not yet supported by thorough systematic studies. Third, interspecific relationships within any putative infrageneric group occurring in North America are at best vague and ill defined. The North American species of Ephedra are well defined based on combinations of vegetative and reproductive characters. Putative hybrids reported and described by H. C. Cutler (1939) appear to be products of singular events; these hybrids are discussed under the parental species. Infraspecific taxa are not recognized in this treatment because there appear to be no consistent defining characters and no geographic correlations; previous recognition of infraspecific taxa (H. C. Cutler 1939) appears to be based on random variability.
Species within checklist: Western Rangeland Plant Identification List \|\| << 1 - 50 taxa >> Ephedra alata Map not Available Ephedra alte Media not available Map not Available Ephedra altissima Map not Available Ephedra americana Map not Available Ephedra andina Map not Available Ephedra antisyphilitica Map not Available Ephedra aphylla Map not Available Ephedra arenicola Map not Available Ephedra aspera Map not Available Ephedra breana Map not Available Ephedra californica Map not Available Ephedra campulopoda Map not Available Ephedra chilensis Map not Available Ephedra compacta Map not Available Ephedra coryi Map not Available Ephedra cutleri Map not Available Ephedra distachya Map not Available Ephedra equisetina Map not Available Ephedra fasciculata Map not Available Ephedra fedtschenkoae Map not Available Ephedra foeminea Map not Available Ephedra foliata Map not Available Ephedra fragilis Map not Available Ephedra frustillata Map not Available Ephedra funerea Map not Available Ephedra gerardiana Map not Available Ephedra gracilis Map not Available Ephedra intermedia Map not Available Ephedra intermixta Map not Available Ephedra lomatolepis Map not Available Ephedra major Map not Available Ephedra minuta Media not available Map not Available Ephedra monosperma Map not Available Ephedra multiflora Map not Available Ephedra nevadensis Map not Available Ephedra ochreata Map not Available Ephedra pachyclada Map not Available Ephedra pedunculata Map not Available Ephedra przewalskii Map not Available Ephedra regeliana Map not Available Ephedra rupestris Map not Available Ephedra sarcocarpa Map not Available Ephedra sinica Map not Available Ephedra somalensis Media not available Map not Available Ephedra strobilacea Map not Available Ephedra tilhoana Media not available Map not Available Ephedra torreyana Map not Available Ephedra triandra Map not Available Ephedra trifurca Map not Available Ephedra trifurcata Map not Available