NO. I BROMELIACEAE OF BRAZIL — SMITH 201 



10. Scape-bracts entire; floral bracts and sepals completely covered 



with appressed white scales. (Fig. no.) ... . 89. Ae. leucolepis 

 9. Apices of the floral bracts mucronate with terete spines. 



11. Sepals 26 mm. long; floral bracts acuminate into an 8-12 mm. 



mucro ; inflorescence green 90. Ae. stephanophora 



II. Sepals not over 17 mm. long. 

 12. The sepals free. 

 13. Sepals 4.5 mm. long, the mucro minute; petals yellow. 



71. Ae. pineliana 

 13. Sepals 8-17 mm. long. 

 14. Axis of the inflorescence lanate; floral bracts slightly thick- 

 ened toward the apex; mucro of the sepals minute. 



68. Ae. alopecurus 

 14. Axis of the inflorescence appressed-lepidote ; floral bracts 

 much thickened toward the apex. 

 15. Sepals 8-9 mm. long; scape slender; petals white or 



greenish 72. Ae. triticina 



15. Sepals 16-17 mm. long; scape stout. 

 16. Floral bracts and sepals covered with white appressed 

 scales; sepal mucro large, stout; petals blue toward 



the apex 91. Ae. cariocae 



16. Floral bracts brown-lepidote ; sepals glabrous, the deli- 

 cate mucro 0.5 mm. long; color of petals unknown. 



92. Ae. castanea 

 12. The sepals connate; scape-bracts divergent, acuminate into a 



stout subulus. (Fig. 104.) 73. Ae. ornata 



I. Sepals obtuse to emarginate or acute with a soft i>oint. 

 17. Floral bracts thin, nerved, about equaling the sepals; scape-bracts erect, 

 equally distributed; sepals 8 mm. long, connate for 2 mm. (Fig. 105.) 



74. Ae. nervata 

 17. Floral bracts at least subcoriaceous, not nerved; upper scape-bracts 

 massed beneath the inflorescence, divergent to spreading. 

 18. Leaves, or at least the outer ones, petiolate, channeled, minutely serru- 

 late ; sepals free, 8 mm. long ; petals white 75. Ae. alba 



18. Leaves not at all petiolate; sepals connate. 

 19. Leaf-blades minutely and subdensely serrulate, linear, 4-9 dm. long, 

 2-4 cm. wide; inflorescence sparsely lanate to appressed-lepidote; 

 floral bracts acute; sepals 11 mm. long, half connate; petals yellow 



at anthesis 76. Ae. lamarchei 



19. Leaf-blades laxly serrate with spines 1-7 mm. long, Hg^late to 

 narrowly triangular. 

 20. Petals lavender to purple at anthesis ; leaf-blades all narrowly tri- 

 angular; sepals 6 mm. long, connate for 2 mm. 



77. Ae. triangularis 

 20. Petals yellow at anthesis ; leaf-blades ligulate or rarely the outer- 

 most narrowly triangular. 

 21. Floral bracts truncate ; sepals 8 mm. long, half connate ; inflores- 

 cence white-lanate 78. Ae. bromeliif olia 



