NO. I BROMELIACEAE OF BRAZIL — SMITH 59 



31. Pedicels 5 mm. long, about equaling the floral bracts; 



leaves 6-8 cm. long; sepals 5 mm. long. (Fig. 18.) 



28. D. macedoi 

 30. Upper scape-bracts and floral bracts entire. 



32. Pedicels about 7 mm. long ; sepals 8 mm. long. 



33. Leaves over 40 cm. long; inflorescence many- 

 flowered 29. D. linearif olia 



33. Leaves 4 cm. long; inflorescence 2-3-flowered. 



12. D. biflora 

 32. Pedicels short and stout. 



34. Floral bracts triangular-ovate, acuminate; sepals 



6-8 mm. long. 

 35. Styles very short; leaves to 40 cm. long, the 

 blades 15 mm. wide, the spines stout, to 6 mm. 

 long 30. D. elongata 



35. Styles elongate ; leaves 14-20 cm. long, the blades 



20-35 mm- wide, the spines small and incon- 

 spicuous 31. D. distachya 



34. Floral bracts broadly ovate to subreniform, apiculate. 



36. Sepals 3-4 mm. long; flowers 6-13 mm. long; 



racemes dense 5. D. microcalyx 



36. Sepals 6-10 mm. long; flowers 13-23 mm. long; 

 racemes lax. (Fig. 14.)... 6. D. leptostachya 

 3. Filaments connate and forming a definite ring above their junction with 

 the petals. (Fig. 20.) 

 37. Petals without a distinct claw and blade, narrowly elliptic; leaf- 

 blades erect, 13-32 cm. long, the spines nearly straight, 2 mm. long ; 

 scape-bracts remote; inflorescence simple, lax; sepals 6-8 mm. 

 long; filaments wholly connate; stigmas subsessile. 



32. D. horridula 

 37. Petals with a sharp distinction between the narrow claw and broad 

 blade. 

 38. Sepals acute or apiculate. 

 39. Scape-bracts (or the great majority of them) equaling or ex- 

 ceeding the internodes. 

 40. Pedicels 15 mm. long, stout; inflorescence much branched; 

 leaf -blades 3 cm. wide; scape-bracts serrulate; floral bracts 

 exceeding the sepals ; sepals 9-10 mm. long. 



33. D. princeps 

 40. Pedicels much less than 15 mm. long. 

 41. Leaves equally lepidote on both sides. 

 42. Sepals 11 mm. long; inflorescence branched or with buds 

 in the axils of the lower bracts ; leaves nearly 50 cm. 

 long, the blades 30 mm. wide, laxly serrate. 



34. D. cinerea 

 42. Sepals 6 mm. long; inflorescence simple; leaves 9-17 cm. 

 long, the blades 8-10 mm. wide, repand-serrate. 



35. D. fosteriana 

 41. Leaves much more lepidote on the under side than on the 

 upper; inflorescence simple. 



