Philodendron propinquum Schott (1856: 78)

Hentz Júnior, Elmar J., Hammes, Janaine K., Camelo, Mel C., Coelho, Marcus A. N. & Temponi, Lívia G., 2021, Araceae from Serra do Brigadeiro State Park, Minas Gerais, Brazil, Phytotaxa 497 (3), pp. 229-246 : 240

Philodendron propinquum Schott (1856: 78) ( Fig. 5C–D , 7F ).

Hemiepiphyte. Steam climber. Prophylls greenish with pink shading. Sheath reaching more than half of the petiole, horizontally flattened. Petiole 2.8–14.5 cm long, green, without vinaceous extrafloral nectaries, geniculum absent. Leaf-blade 6.6–20.0 × 1.9–5.6 cm, green, slightly discolorous, erect to the petiole, chartaceous, oblong, lanceolate to elliptic, with a flat surface, apex acute, base rounded, absence of glandular dots. Midrib green, engraved adaxially, prominent obtuse abaxially, primary lateral veins 4–5 on both sides, basal vein absent, collective vein absent, secondary and tertiary veins parallel-pinnate. Inflorescence 1 per leaf axil. Peduncle 2.6 cm long, green, terete. Spathe 2.2–13.0 × 3.4 cm, green at the base, whitish at the apex, internally red. Spadix 4.5–10.4, heterogeneous, unisexual flowers, without sterile staminate flowers at the apex. Staminate fertile section 3–4 cm long, cream-colored. Staminate sterile section 0.4–0.6 cm long, white. Pistillate section 1.5–5.0 cm long, translucid yellow. Rooting berries orange to pink.

Distribution: — Philodendron propinquum is endemic to Brazil, occurring in Bahia, Pernambuco, Espírito Santo, Minas Gerais, Rio de Janeiro, São Paulo, Paraná, and Santa Catarina ( Flora do Brasil 2020). It was found at the Pico do Boné, Matipó, Laje do Ouro (northern PESB), and Trilha do Muriqui (central PESB).

Ecology and phenology: —Collected flowered from September to April and in fruit from April to December (Sakuragui et al. 2011). In the PESB, it was found with flowers in February, June, July, November and December, and with ripe berries in July. All individuals could reach more than 10 trees on the edge of the trails, with populations of 3–4 individuals in the same phorophyte.

Taxonomic notes: —Easily recognized by its winged sheath.

Specimens examined: — BRAZIL. Parque Estadual da Serra do Brigadeiro, Minas Gerais: Araponga, Fazenda Neblina , Dec 1994, L. S . Leoni 2725 ( RB); Trilha do Muriqui , 14 Nov 2018, M. C . Camelo et al. 38 ( RB!); Trilha para o Pico do Boné , 23 Jun 2004, M . Nadruz et al. 1571 ( RB); Trilha da Laje do Ouro , 03 Jul 2019, E. J . Hentz Júnior et al. 90 ( UNOP!); Trilha Matipó, 04 Jul 2019, E. J . Hentz Júnior et al. 91 ( UNOP!); Fervedouro, Trilha do Pico do Pato , Hentz Júnior et al. 185, 12 Feb 2020 ( UNOP!) .

Figures

FIGURE 5. Philodendron edmundoi. A. Habit. B. Inflorescence. Philodendron propinquum. C. Habit. D. Berries.

FIGURE 7. Anthurium scandens subsp. scandens. A. Habit and leaf detail. Philodendron appendiculatum. B. Inflorescence. C. Habit. Philodendron cordatum. D. Habit. E. Inflorescence. Philodendron propinquum. F. Habit and inflorescence. Illustrations by Thaís Marcon