Tetrapterys huachamacariensis W.R.Anderson

  • Authority

    Maguire, Bassett. 1978. The botany of the Guayana Highland--part XI. Mem. New York Bot. Gard. 32: 1-391.

  • Family

    Malpighiaceae

  • Scientific Name

    Tetrapterys huachamacariensis W.R.Anderson

  • Description

    Latin Diagnosis - Frutex usque 2 m altus, ramis pertinaciter aureo-sericeis. Lamina foliorum majorum 2.8-6.3 cm longa, 1.8-2.9 cm lata, elliptica, basi cuneata vel rotundata, margine valde revoluta et parum incrassata, apice obtusa vel rotundata, glabrata vel costa ± pertinaciter sericea, subtus utrinque serie 5-8 glandularum impressarum inter marginem et costam munita, nervis lateralibus plerumque visibilibus (in sicco) sed non prominentibus; petiolus 0-2 mm longus, sericeus, eglandulosus; stipulae minutae, ca 0.1 mm longae, interpetiolares prope basim petioli. Inflorescentia pseudoracemus axillaris 3-6 cm longus, pertinaciter aureo-sericeus, floribus decussatis 4-8, bracteis 1-1.5 mm longis (vel 2 inferioribus folioliformibus), pedunculo (2-)6-10 mm longo, bracteolis 2-4 mm longis, 1.5-3 mm latis, ellipticis vel obovatis, apice vel saepius sub apice pedunculi portatis, eglandulosis. Pedicellus 9-11 mm longus, sericeus vel glabrescens, apice tumidus. Sepala omnia biglandulifera. Petala ignota. Filamenta 1.5-2 mm longa, glabra; antherae ca 1 mm longae, glabrae. Ovarium glabrum; styli 2-2.5 mm longi, recti, glabri, apice interne stigmatifero dorsaliter rotundato vel truncato. Samara immatura rubra, glabra; alae laterales 7-10 mm longae, 3-7 mm latae, 2 superiores latiores; ala dorsahs 2.5-3.5 mm lata, ca 6-7 mm alta, sinuata vel subintegra; nux inter alas laterales et alam dorsalem nuda.

  • Discussion

    Type. Maguire, Cowan & Wurdack 30054, ridge summit. East Ridge No. 1, Cerro Huachamacari, Río Cunucunuma, Amazonas, Venezuela, elev 1820 m, Dec frt (holotype NY, isotypes MICH, VEN). Paratype. Maguire et al 30164, scrub savanna, SE Escarpment, Cerro Huachamacari, Amazonas, Venezuela, elev 1900 m, Dec frt (NY). This species is intermediate between Tetrapterys pusilla and T. fimbripetala. It has the small, subsessile, glabrate leaves of the former, and its shrubby habit, but the hairy stems and inflorescence of the latter.