I06 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 126 



14. The floral bracts dark castaneous with pale margins, from 

 slightly shorter to slightly longer than the sepals. 



72. V. atra 



14. The floral bracts wholly dull green or with dark margins. 



15. Sepals very broad, distinctly less than half exserted from the 



floral bracts if at all ; plants robust. 



16. Scape-bracts imbricate; leaves concolorous or transversely 



marked with dark irregular green lines ; flowers spreading 



at anthesis; sepals broadly ovate, acute or subacute. (Fig. 



45) n- V. jonghii 



16. Scape-bracts shorter than the upper internodes ; leaves trans- 

 versely marked with purple lines ; flowers reflexed at an- 

 thesis ; sepals broadly elliptic, obtuse. . . 74. V. f osteriana 

 15. Sepals narrowly elliptic or suboblong, much longer than broad, 

 about half exserted; flowers usually reflexed at anthesis. 



(Fig. 46.) 75. V. platynema 



13. Floral bracts fleshy or subchartaceous, becoming rugose or nerved 

 when dry; sepals mostly much exserted from the floral bracts. 

 17. The floral bracts fleshy, becoming rugose when dry ; rhachis stout. 

 18. Sepals acute, to 35 mm. long; floral bracts obtusely carinate. 



^(i. V. wawranea 



18. Sepals subobtuse, 25-44 "iti. long; floral bracts convex, 



ecarinate. 



19. Inflorescence covered with a strongly glutinous material; 



floral bracts broadly ovate, imbricate before anthesis, 



usually with dark margins jj. V. bituminosa 



19. Inflorescence dry; floral bracts elliptic, never imbricate, 



concolorous 78. V. regnellii 



17. The floral bracts subchartaceous, becoming nerved when dry ; 

 rhachis slender ; sepals 22 mm. long, obtuse ; upper scape-bracts 

 slightly shorter than the internodes 29. V. minarum 



SUBKEY F 



I. Leaf-blades marked on the upper or both sides with dark spots, broadly 

 rounded; floral bracts farinaceous, 30-40 mm. long. 

 2. Floral bracts imbricate and concealing the rhachis, broader than long, 

 equaling the sepals 79- V. pardalina 



2. Floral bracts enfolding the spreading flowers and thus exposing the rhachis, 



broadly ovate, equaling or shorter than the sepals 80. V. guttata 



I. Leaf-blades concolorous, pale green. 



3. Floral bracts imbricate and concealing the rhachis, 50-55 mm. long, ex- 



ceeding the sepals 81. V. obliqua 



3. Floral bracts spreading and exposing the rhachis at anthesis. 

 4. The floral bracts laterally compressed, sharply carinate, incurved, to 



40 mm. long, slightly shorter than the sepals 82. V. retroflexa 



4. The floral bracts not compressed, slightly if at all carinate, usually much 

 shorter than the sepals; pedicels slender, 8-20 mm. long. 

 S. Floral bracts much more than half as wide as long, 35-45 mm. long, 

 their margins much overlapping behind the sepals... 83. V. simplex 



