Perebea guianensis subsp. acanthogyne (Ducke) C.C.Berg

  • Authority

    Berg, Cornelius C. 1972. Olmedieae, Brosimeae (Moraceae). Fl. Neotrop. Monogr. 7: 1-229. (Published by NYBG Press)

  • Family

    Moraceae

  • Scientific Name

    Perebea guianensis subsp. acanthogyne (Ducke) C.C.Berg

  • Type

    Lectotype. Ducke sn (HJBR 19494 [female] (RB), near Pébas, Loreto, Peru.

  • Synonyms

    Perebea acanthogyne Ducke

  • Description

    Description - Leafy twigs densely yellow to brownish hirtellous to velutinous to subsericeous. Leaves oblong to lanceolate, mostly broadest near the lower end, 24-46 cm long, 10-17 cm broad, coriaceous, deeply cordate to subcordate at the base, entire to repand, rarely dentate towards the apex, densely hirtellous on the veins and usually rugose beneath; 18-24 pairs of secondary veins; stipules 4-6 cm long, yellow sericeous often subpersistent. Staminate inflorescences 9-20 mm in diameter; peduncle 10-30 mm long; involucre with ca 90-100 deltoid to subovate bracts in 6-8 series; perianth 1-1.5 mm high; filaments 0.8-1.5 mm long, strongly broadened towards the base, anthers o.2-0.4 mm long, 0.2-0.3 mm broad, mostly apiculate. Pistillate inflorescences 20-30 mm in diameter; peduncle 5-15 mm long; involucre with ca 150-400 ovate to subulate, acute bracts in 10-12 series; flowers ca 40-100; perianth 6-6.5 mm high, 4-dentate to 4-fid, free segments 2-3 mm long, narrow, style 4-5 mm long, stigmas (1.0-) 1.2-2.2 mm long, 1.2-3.0 mm broad, acute to mucronate. Infructescences 3.5-4.5 cm in diameter; fruiting perianth 14-20 mm high; style 7-8 mm long (longer if ovary has not developed); fruit 12-13 × 7-8 mm.

  • Discussion

    This subspecies is well-characterized by its indument. It differs from subsp castilloides and subsp guianensis in the pistillate inflorescences and the flowers but resembles subsp hirsuta in these structures. Subsp acanthogyne may hybridize with subsp guianensis, as discussed under the latter.

  • Distribution

    (Fig 14). North of the Upper Amazon River, near the boundaries of Brazil, Peru, and Colombia; in non-inundated forests.

    Colombia South America| Peru South America| Brazil South America|