Philodendron biribiriense (Araceae)
Epilithic herbs. Stem: apex green becoming greyish in the mature parts, internodes 1.5-6 cm long. Prophyll 6-14.5 x 1-2 cm, linear-lanceolate, greenish-cream becoming chestnut-coloured. LEAVES: Petiole 13-25 cm long. Leaf blade 13-25 x 9-15 cm, ovate to broadly ovate, apex acute, base cordate, glaucous on the adaxial surface, pale green on the abaxial surface, sub-coriaceus to coriaceous; anterior division 11-15.5 x 9-15.5 cm, primary lateral veins 3-5 per side, weakly impressed on the adaxial surface; posterior divisions 4-6 x 5-7.5 cm, acroscopic veins 0-1 per side, basiscopic veins 0-3 per side; basal veins 1-4 with none or rarely 1 free to base; posteriro rib naked for 0.2-0.5 cm. INFLORESCENCE: Inflorescence: 1 per floral sympodium; peduncle 2.4-4 cm long. Spathe 10-11 x 1.5 cm, boat-shaped, not constricted, reddish-green outside, greenish-red inside. Spadix 8.5-10.5 cm long; male zone 4-5 cm long, cream; male sterile zone 0.9-1.2 cm long, cream; female zone 3-3.5 cm long, vinaceous. Flowers: stamens 0.9-1.2 x 1-1.1 mm; sterile stamens 1.2-1.8 x 1-2 mm; gynoecium 1.6-2 x 1-1.2 mm, ovary 7-9-locular, 3-4 ovules per locule, sub-basal placentation. Berries immature, oblong, 1.8-3 x 1.5-2.4 mm, yellowish green. Fig. 2. D-F.
Vulnerable (VU) D2. This species occurs in a restricted area and its populations are not known to be included in protected areas. It occurs on rock outcrops in ‘campo rupestre’, and this habitat is not under particular threat at the moment.
Brazil, Serra do Espinhaço, Central Minas Gerais.
On rocks in ‘campo rupestre’ areas.