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|Family: Cannabaceae||View Description||Dichotomous Key|
|Genus: Cannabis||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Cannabis sativa L.
Habit: Annual, erect; hairs unbranched. Stem: branched, < 4 m; inner bark fibrous. Leaf: lower opposite, palmately compound, upper alternate, palmately compound to occasionally simple; leaflets generally 3--7, < 15 cm, narrowly lanceolate, coarsely serrate. Staminate Inflorescence: panicle- or spike-like, > 15 cm, +- open. Pistillate Inflorescence: erect to spreading, > 2 cm, dense. Pistillate Flower: perianth parts fused into a short, unlobed tube or ring. Fruit: achene, 1--2 mm, generally +- enclosed in persistent perianth.
Ecology: Disturbed areas; Elevation: generally < 600 m. Bioregional Distribution: CA-FP; Distribution Outside California: possibly native to central Asia, but cultivated since pre-history. Flowering Time: Jun--Oct Note: Highly variable. Psychoactive resin (THC) concentrated in pistillate inflorescences; used in medicine; stem fibers for rope, fabric, paper, etc.
Synonyms: Cannabis indica Lam.
Unabridged Note: It is very difficult to ascertain the true range for Cannabis sativa as a naturalized plant, since it is often illicitly planted in wild areas. The great majority of collections from California come from elevations below 600 m, but very few specimens from higher elevations (up to nearly 1500 m) have been seen. It is questionable whether the sp. is really established in California at elevations above 600 m.
eFlora Treatment Author: Alan T. Whittemore & Elizabeth McClintock
Jepson Online Interchange
Previous taxon: Cannabis
Next taxon: Celtis
Citation for this treatment: Alan T. Whittemore & Elizabeth McClintock 2017. Cannabis sativa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=17076, accessed on January 23, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 23, 2017.