236 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I26 



31. Epigynous tube as long as the ovary; sepals subequal. 



29. B. oxysepala 



29. Sepals broad, oblong, ovate or elliptic, broadly acute to truncate or retuse, 



sometimes apiculate, 5-13 mm. long. 



33. The sepals deeply retuse and apiculate, essentially tridentate, 11 mm. 



long; floral bracts minute; petals green; inflorescence elongate, lax. 



30. B. alfonsi-joannis 

 33. The sepals truncate to acute. 

 34. Ovary slightly or not at all sulcate, wholly white-farinose. 

 35. Petal-blades green, strongly spiralled ; species of the Amazon Basin. 



31. B. decora 



35. Petal-blades dark blue, only slightly spiralled, then contorted ; spe- 



cies of eastern Brazil (19. B. brasiliensis) 



34. Ovary sulcate with the ridges glabrous and dark. 



36. The ovary broadly turbinate with large protuberances at the apex, 



much broader than the epigynous tube at anthesis. (Fig. 123.) 



32, B. zebrina 

 36. The ovary ellipsoid or subcylindric, lacking protuberances, slightly 



if at all wider than the epigynous tube at anthesis. 

 37. Floral bracts well developed, the lowest resembling the scape- 

 bracts in size and shape 33. B. magnifica 



37. Floral bracts all much reduced or even lacking. 

 38. Axis of the inflorescence farinose or flocculose at anthesis; 

 sepals 5-10 mm. long. 

 39. Petals wholly green ; scape and floral axis slender. 



34. B. porteana 

 39. Petals violet or blue, at least apically. 

 40. Sepals broadly rounded and apiculate; floral axis stout. 



35. B. cylindrostachya 



40. Sepals acute ; floral axis slender 36. B. kuhlmannii 



38. Axis of the inflorescence glabrous at anthesis ; sepals 8-13 mm. 

 long; petals green with blue apices 37. B. rubicunda 



Subgenus Billbergia 



I. Billbergia sanderiana E. Morr. Belg. Hortic. 34: 17, pis. i, 2. 1884. 



Billbergia amoena sensu L. B. Smith, Arquiv. Bot. Estado Sao Paulo 

 nov. ser. i : pi. 102. 1943. 

 Brazil: Cultivated, Glasiou 15477 (P) ; Hort. Liege (GH) ; Sander i (LG, 



type). 

 EspfRiTO Santo: Santa Teresa, Foster 305 (GH, US). 

 MiNAS Gerais: Handro (SP, US) ; Hoehne (SP). Serra de Rola Moga, near 



Belo Horizonte, Foster 526 (GH). 

 Rio de Janeiro: Serra de Nova Friburgo, Glasiou 2731 (P). Teresopolis, 



Bessa & Sampaio 2696 (R). 

 DiSTRiTO Federal: Cultivated (?), Sao Cristovao, Glasiou 16430 (K, GH 



neg. 2720). 

 3. Billbergia elegans Mart, ex Schult. in R. & S. Syst. 7, pt. 2: 1265. 1830. 

 MiNAS Gerais: Itabira, Weddell (P). Serra de Cara^a, Saint-Hilaire (P). 



Pico de Itacolomi, near Vila Rica, Martius (M, type) ; Sellow 79 (P) ; 



1099 (B, F neg. 11338). Ouro Preto, Glasiou 12229 (P). Mun. Nova Lima: 



Serra da Mutuca, Williams 5615 (GH) ; 5622 (GH). 



