Monographs Details: Adelobotrys fruticosa Wurdack
Authority: Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Family:Melastomataceae
Description:Latin Diagnosis - A. barbatae Tr. affinis sed foliis plerumque minoribus foliorum indumento subtus densissimo appresso inflorescentia non pedunculata calycis dentibus maioribus. Kami juveniles dense rufo-villosi demum cinerei glabrati. Petioli lati, 3-10 mm longi; lamina 4-11 X 2-4.5 cm, elliptica apice acuta basi obtusa vel truncata 5-7-nervia nervis primariis supra et subtus leviter elevatis nervis secundariis supra paulo elevatis subtus obscuris, supra primum villosula demum glabrata, subtus densissime strigulosa setis gracillimus primum rufescentibus demum einereis tarde in lamellis irregularibus dehiseentibus; folia demum deflexa. Inflorescentia eapitata sessilis vel maxime ad 1 cm pedunculata in toto cum pedicellis hypanthiis calycibusque densissime rufo-strigosa pilis gracilibus. Flores 5-meri breviter (ad 5 mm) pedicellati, alabastris submaturis solum notatis. Hypanthium 6 X 4 mm; calyx ad basim 1 mm coalitus, lobis ovatis 2.5 mm longis, dente exteriore 1.2 mm longo acuto. Petala late obovata obtusa. Stamina dimorphica, maioribus cum antheris 4.7 mm longis, connectivi basi aeuta 0.8 mm producta appendice dorsali adscendenti 2.5 mm longa, apice breviter emarginata, minoribus cum antheris 2.6 longis, connectivi basi acuta 0.6 mm producta anpendice dorsali adscendenti 2.5 mm longa apice rotundata. Ovarium 3-loeulare glabrum apice truncatum.

Discussion:

Type: shrub 0.3-1.5 m, frequent in sabanita on right bank of Cano Pimiehin 1 km above Pimiehin, elev. 140 m, Rio Guainia, Terr. Amazonas, Venezuela, Nov 24. 1953, Bassctt Maguire, John J. Wurdack, & George S. Bunting 36392 (NY). Paratype: infrequent in woodland near Savanna No. 1, northwest base of Cerro Yapacana, elev. 125 m, Rio Orinoco, Terr. Amazonas, Venezuela, Nov 20, 1953, Maguire, Wurdack, d Bunting 36608.

A. barb at a has leaves with petioles 1.5-3 cm long and blades up to 20 X 8 cm; the lower leaf-surfaces are moderately covered with stout semi-ereet malpighian hairs; the inflorescence is a short but definite panicle aud the calyx proper is only indistinctly lobed. A. barbata is known from Maroa. Venezuela, and the upper Rio Negro drainage (Rios Vaupes, Piraparana, and Icana).