NO. I BROMELIACEAE OF BRAZIL — SMITH 57 



12. Scape-bracts all with linear blades; leaves entire or sub- 

 entire, over 40 cm. long ; flowers few, 9 mm. long, half as 



long as the internodes 10. D. burchellii 



12. Scape-bracts diverse, the upper ones bladeless; leaves serru- 

 late, 7-30 cm. long; flowers usually numerous, much more 

 than half as long as the internodes. 

 13. Floral bracts apiculate or abruptly acute; flowers 11-24 

 mm. long. 

 14. Inflorescence compound; pedicels 3 mm. long, exceeding 

 the floral bracts; sepals 7 mm. long, fimbriate, to- 



mentulose 11. D. orobanchoides 



14. Inflorescence simple; pedicels either shorter than the 

 floral bracts or over 3 mm. long. 

 15. Pedicels about 8 mm. long ; inflorescence 2-3-flowered ; 

 sepals narrow, 8 mm. long; petals erect, ecarinate, 



not undulate 12. D. biflora 



15. Pedicels much less than 8 mm. long; inflorescence 

 more than 3 -flowered; sepals broad, 8-12 mm. long; 

 petals more or less spreading and carinate. 

 16. Upper scape-bracts shorter than the internodes. 



13. D. remotiflora 

 16. Upper scape-bracts equaling or exceeding the inter- 

 nodes. 

 17. Axis of the inflorescence lepidote; inflorescence 



many-flowered 14. D. vaginosa 



17. Axis of the inflorescence white- villous ; inflores- 

 cence few-flowered 15. D. choristaminea 



13. Floral bracts acuminate; flowers never more than 12 mm. 



long. 



18. Upper scape-bracts equaling or exceeding the internodes ; 



lower floral bracts usually exceeding the flowers; 



leaf-blades 25-35 nim- wide, short and thick; sepals 



to 8 mm. long 16. D. brevif olia 



18. Upper scape-bracts shorter than the internodes; lower 

 floral bracts shorter than the flowers; leaf-blades 

 ia-20 mm. wide. 

 19. Upper scape-bracts entire; leaves to 12 cm. long. 

 20. Pedicels not more than 3 mm. long; leaf-blades 

 serrulate, i cm. wide; sepals 6 mm. long. 



17. D. hilaireana 



20. Pedicels to 14 mm. long; leaf -blades entire, 2 cm. 



wide; sepals 9 mm. long. (Fig. 16.) 



18. D. heloisae 

 19. Upper scape-bracts serrulate; leaves 15-40 cm. long. 



21. Style almost as long as the ovary; leaf -blades 



covered on both sides with a membrane of coarse 

 silvery scales; sepals 6 mm. long. 



19. D. argentea 

 21. Style very short; leaf-blades glabrous above; sepals 



S-7 (rarely to 9) mm. long. (Fig. 17.) 



20. D. tuberosa 



