1952] 



PLANTS COLLECTED IN ECUADOR 



39 



Begonia Maurandiae A. DC, 



Azuay: plants scrambling on bank; the eastern Cordillera, 1—8 km. north of the 

 village of Sevilla de Oro, 8,000-9,000 ft., E-4269. Climbing epiphyte; bracts pale 

 green; sepals basally crimson, white band near apex, tip green; "petals" (inner 

 pair) externally crimson, internally pink. Same locality, E-4430. Santiago-Zamora 

 ("Oriente"): epiphyte, leaves dark green above, nitid, pale and subnitid below, 

 petioles and peduncles red, outer perianth segments reddish or greenish with red 

 veins, inner segments crimson, anthers yellow-green, only staminate flowers 

 seen; Tambo Consuelo to Tambo Cerro Negro, eastern slope of the Cordillera, 

 valley of the Rfos Negro and Chupianza on the trail from Sevilla de Oro to Men- 

 dez, 8,000-9,000 ft , E-1606. Plant climbing, much-branched; leaves deep green, 

 subnitid above, pale green nitid below; ovary green in flower and immature fruit; 

 mature fruit dead-brown; perianth segments pale green; species apparently dioe- 

 cious (see also no. 4981 for specimen from this region; between Tambo Consuelo 

 and Tambo Cerro Negro, eastern slopes of the Cordillera, valley of the Rio Negro, 

 down to the Rio Pailas on the trail to Mendez), 8,500—9,500 ft., Francisco Prieto, 

 E-4974. 



Begonia maynensis A. DC. 



Santiago-Zamora ("Oriente "): to 0,3 m. , flowers white; uplands west of Rio 

 Upano, near Mendez, 1,750-2,500 ft., E-977. 



Begonia octopetala L'Herit. 



Canar: plants from bulbous base, peduncles and petioles crimson, outer peri- 

 anth segments crimson, inner pink to white; near Suscal, north rim of the valley of 

 the Rio de Canar, M. Giler f E-2843. Between Suscal and Chontamarca, north rim 

 of the valley of the Rio de Canar, M. Giler, E-2891. (inflorescences only, mixed 

 with leaves and stems of another species resembling B. acerifolia) a 



Begonia parviflora Poepp. & Endl. 



Santiago-Zamora ("Oriente "): plants to 4 m., flowers white; El Partidero, be- 

 tween Rfos Paute and Negro, eastern slope of the Cordillera, valley of the Rfos 

 Negro and Chupianza (on the trail from Sevilla de Oro to Mendez), 2,100—3,100 

 ft., E-1528. Plants 2—3 m., leaves seen to 0.75 m. in diameter (these immature), 

 flowers white; Tambo Chontal to Tambo Consuelo, 5,700—8,000 ft., eastern slope 

 of the cordillera, valley of the Rfos Negro and Chupianza (on the trail from Se- 

 villa de Oro to Mendez), E-1592. 



Begonia piurensis Smith & Schubert. 



Chimborazo: plants 1—2 m., from heavy tuberous base, stems rooting above 

 tuber, stems red, leaves pale green above, usually reddish below, perianth seg- 

 ments white with red veins, or in some plants deep pink; moist forested valleys 

 in the afternoon fog- belt, canon of the Rio Chanchan, about 5 km. north of Huigra, 

 5,000—6,500 ft., E-3294. Same, stem and leaves pale green and flowers pure white, 

 relatively few plants mixed in with number E-3294, probably genetically controlled, 

 E-3294B. New to Ecuador. 



Begonia Rossmanniae A. DC. 



Santiago-Zamora ("Oriente"): plants erect to 1 m., leaves deep green above, 

 paler below, perianth and fruit deep orange red; Yucal region, above the Rio 

 Paute, about 5 km. west of Mendez, 2,400 ft., Jorgensen t E-943* Epiphytic climb- 

 ing vine, leaves deep green above, pale below, flowers cream with greenish tinge, 

 fruit becoming brownish at full maturity; ridge ascending into central Cutucu, 

 2,600 ft., Cordillera Cutucu, ca. 8° 40 ' S., 78° W., F. Prieto, E-1132, 



