B. involucrata

A higher elevation species that requires high ambient moisture - Rekha Morris from Flora of Costa Rica. Begoniaceae. by Paul C. Standley. Chicago 1937. v. 18: pt. 2 (1937): Page 737-48 http://www.biodiversitylibrary.org/item/19747 Plants erect, often somewhat branched and as much as 1.5 meters high, the stems, petioles, and peduncles with a rufous tomentum of long hairs; leaves large, long-petiolate, the blades broadly and obliquely ovate, 9-12-nerved, acute or acuminate, rather shallowly cordate at the base, lobate-dentate or often with 2-3 rather deep lobes, rarely almost entire, more or less pilose but sometimes glabrate on the upper surface; peduncles usually longer than the leaves, the cymes at first often greatly condensed and covered by the large, brown bracts, later often broad and spreading, the pedicels usually glabrous, the flowers white; sepals 2; capsules 7- 10 mm. long, the larger wing elongate, obtuse or acutish, directed upward, the others much reduced.
Pests Diseases

• Classification: Species
• Plant Type: Thick Stem
• Botanical Section: Gireoudia
• Origin: America, Costa Rica, Panama, Mexico
• Originator: Liebmann, Vid. Medd. Naturh. For. Kjöbenhavn
• Date of Origin: 1852