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Manual de Plantas de Costa Rica

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The Cutting Edge

Volume X, Number 1, January 2003

News and Notes | Recent Treatments | Leaps and Bounds | Germane Literature | Season's Pick

Urticaceae. Alexander Rodríguez G. (INB).
Popeye's first draft treats a total of 11 genera and 73 spp., which is one more genus and 20 more spp. than were included in William Burger's 1977 Flora costaricensis account of Urticaceae (Fieldiana, Bot. 40: 218-283); in each case, one of the “genera“ comprises a single “species of uncertain position“ (or, “especie con posición incierta“). The genus added by Popeye is Discocnide, known by a single collection from the Monteverde region, and 10 of the 20 extra spp. are in Pilea. The latter, with 36 Costa Rican spp., is by far our most diverse genus, followed distantly by Boehmeria (10 spp.), Urera (9 spp.), Phenax (5 spp.), and Myriocarpa and Pouzolzia (4 spp. each). Sixteen spp. (including 13 of Pilea) are indicated as Costa Rican endemics. Ten spp. (and one genus) are named provisionally, and one sp. (Pilea rugosissima Killip, of western Panama) remains of hypothetical occurrence in Costa Rica (it was so treated by Burger). Two spp., Boehmeria nivea (L.) Gaudich. and Pilea cadierei Gagnep. & Guillaumin, are known principally or exclusively form cultivation.

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