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Project Name Data (Last Modified On 11/29/2012)

Flora Data (Last Modified On 11/29/2012)
Genus ACANTHOCEREUS (Engelm. ex A. Berger) Britton & Rose
PlaceOfPublication Contr. U. S. Nat. Herb. 12:432. 1909
Reference Carnegie Inst. Wash. Publ. No. 248. 2:121. 1920.
Synonym Cereus subsect. Acanthocere-us Engelm. ex A. Berger, in Ann. Rep. Missouri Bot. Gard. 16: 75. 1905.
Description Succulent erect or clambering shrubs; stems phylloid and jointed, the joints elongate, rooting adventitiously at the tips, 3- to 5-angled, the areoles marginal on the angles, shortly pubescent and prominently spiny. Leaves very inconspicuous, acicular and fugacious or apparently wholly lacking. Flowers nocturnal, sessile, borne singly at the areoles; perianth large, subsalverform, with an elongate tube, the segments very numerous, the outer progressively shorter and narrower than the inner, widely spreading, the tube bearing several minute caducous bracts and prominent pubescent and spiny areoles; stamens very numerous, the filaments somewhat shorter than the perianth, united at progressively deeper levels to the hypanthium; ovary cylindric-ovoid, the areoles numerous and crowded, pubescent and spiny; style filiform, terete, somewhat shorter than the outer and upper stamens. Fruit a fleshy berry with numerous seeds.
Habit shrub
Note A genus of about a dozen species, most frequent in Central America. A single species is recorded from Panama.
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