Monographs Details: Panopsis megistosperma Bonifaz & Cornejo
Prance, Ghillean T., et al. 2007. Proteaceae. Fl. Neotrop. Monogr. 100: 1-218. (Published by NYBG Press
Description:Species Description - Tree, to 20 m tall and 50 cm diam, occasionally with prop roots 0.8-1 m long. Young branches with conspicuous, abundant, elliptic lenticels 0.4-2 mm long. Leaves verticillate, sessile or subsessile; lamina coriaceous, oblanceolate to narrowly obovate, (22-) 27-4-4 × (6-) 10-18 cm, the base cuneate; apex acute to acuminate, both surfaces glabrous, the lateral veins 15-20 pairs; venation reticulate on both surfaces. Inflorescences axillary, (sub)fasciculate, puberulous, 11-17 cm long; bracts of lower flowers to 1.5 mm; pedicels 6-10.5 mm long. Flowers fragrant; tepals cream colored, 7-9 mm; stamens 7-8 mm, filaments adnate to tepal bases for 1.5 mm; anthers 115 mm long; disk cupular and covering almost the entire ovary, 1-1.3 mm, with truncate sinuses; ovary femiginous-tomentose, 0.5-0.8 mm long, style 6-8 mm long. Fruit subglobose, to 10 × 12 cm, glabrous, when mature dark brown, slightly mucronate apically; pericarp 2-3 mm thick. Seed globose, hard, cream colored, 8-11 cm diam. Diagnostic characters. The large fruit (10 × 12 cm) is only found in this species and P. macrocarpa, from which it differs in the sessile leaves and the mucronate apex of the fruit. Some individuals have prop roots, a character unknown in other species.
The sheets of Gustafsson and Cornejo 510, the type number, distributed to GB and S are not of this species. They are not Proteaceae; therefore, they do not match the material cited above.
Phenology. Flowering in Mar; fruiting in Sep.
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