Monographs Details: Abuta panamensis (Standl.) 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 - GUATEMALA. Aguilar 273 (F); Huehuetenango: Steyermark 49211 (F) (between Ixcan and Rio Ixcan), 49741 (F) (near Barillas, alt 1800-2000 m); Quetzaltenango: alt 1200-1400 m, Standley 86953 (F), 86973 (F); Retalhuleu: alt 120-170 m, Standley 87286 (F), 87300 (F), 87307 (F), 87853 (F), 88308 (F), 88494 (F); Solola: Steyermark 48035 (F); Chimaltenango: Steyermark 52103 (F); Sacatepequez: Standley 65005 (F); Alta Verapaz: Chancy s n (F) (near Coban), Standley 71385 (F), 90297 (A), 90579 (F), 91416 (A), and 91488 (F) (between Tactic and Tamahu), 91638 (F) (near Chirriacte), 91820 (F) (near Panacajche), Steyermark 44804 (F) (near finca Cubilguitz), Standley 89770 (F) and 89805 (F) (between Coban and San Pedro Carcha); Izabal: Standley 73040 (F) and 73091 (near Puerto Barrios) (F-type of Hyperbaena brunnescens). HONDURAS. Atlantida: Standley 7750 (F); Yuncker et al. 8438 (US). NICARAGUA. Zelaya: Standley 19484 (F). COSTA RICA. Alajuela: finca Los Ensayos, alt ± 3100 ft, Barquero 1970/203. PANAINIA. Canal Zone: Barro Colorado Island, Bailey & Bailey 101 (F), Standley 40787 (US), 40800 (US), 40978 (US), 41077 (US).

Discussion:

Abuta brunnescens (Standley) Krukoff & Barneby, Mem. N. Y. Bot. Gard. 20(2): 24. 1970.

Hyberbaena brunnescens Standley, Field Mus. Publ. Bot. 22: 21. 1940.

When we transferred Hyperbaena brunnescens Standi, to .Abuta [Mem. N. Y. Bot. Gard. 20(2): 24], we believed it distinct from A. panamensis because of the dense tawny pubescence clothing the lower face of the leaf-blades, but all the known material being sterile we were unable to work out its relationship to other pubescent species known from Central America. Subsequently we have seen further collections (Standley 89770 and 89805) which were out on loan at the time of our initial study. Although these also lack flowers and fruits they demonstrate a clear transition between the relatively glabrous A. panamensis and so-called "A. brunnescens." In particular Standley 89805, a branch bearing old glabrate leaves from among which arises a new young branch as densely velvety-tomentose as anything referred to H. brunnescens, effectively combines in one plant the supposed differential characters. We now confidently interpret the type of H. brunnescens as a juvenile pubescence-form of the widespread A. panamensis.

This is the first record of the species from the departments of Huehuetenango, Solola, and Chimaltenango in Guatemala and from Nicaragua.

Distribution:Guatemala Central America| Honduras Central America| Nicaragua Central America| Costa Rica South America| Panama Central America|