Monographs Details: Abuta aristeguietae Krukoff & Barneby
Authority: Barneby, Rupert C. & Krukoff, Boris A. 1971. Supplementary notes on American Menispermaceae. VIII. A generic survey of the American Tricilisisae and Anomospermeae. Mem. New York Bot. Gard. 22: 1-89.
Family:Menispermaceae
Description:Distribution and Ecology - Distribution (8 collections): Costa Rica (Alajuela, Guanacaste), Venezuela (Yaracuy, Miranda, Federal District), and Peru (Junin). COSTA RICA. Guanacaste: La Tejona (north of Tilaran, alt 600-700 m), Standley & Valerio 45755 (F, US); Alajuela; Llanura de San Carlos (alt 100 m), Molina et al. 17676 (F). PERU. Junin: Woytkowski 5541 (GH) (Huatsiroke, alt ± 1800 m). VENEZUELA. Distr. Federal: Cerro Naiguata, alt 1390-1500 m, Steyermark 91967 (US).

Discussion:

Staminate inflorescences and flowers of this species are not known.

Until staminate inflorescences are forthcoming we can distinguish this species from A. pahni only by the very large, lenticellate drupes borne in short spiciform racemes. The discovery of this type of fruit in Costa Rica strongly suggests that the sterile collections referred to A. rufescens in Supplement VI [Mem. N. Y. Bot. Gard. 20(2): 17] will prove conspecific. The closely related Guatemalan A. steyermarkii is now not clearly differentiated, being known only from pistillate flowering material, a state unknown in A. aristeguietae. All of these forms differ from genuine Amazonian A. rufescens in having leaf-blades perceptibly even though only finely reticulate on the upper side at all stages of growth. Now that the range of A. aristeguietae has been extended from Peru to Costa Rica, it must be expected to occur in Colombia and Panama.

Distribution:Costa Rica South America| Venezuela South America| Peru South America|