APOGON 



59 



Crests narrow obtuse, leaves 

 J to I ft. long, ^ in. broad 

 or less, capsule trigonous 9. I. TENAX 

 Crests deltoid, leaves I to I J 

 ft. long, in. broad or 

 more,,capsule six-ribbed 

 and beaked, stem com- 

 pressed . . .10. I. ENSATA 

 ***# Stem 2 in. to a foot long 

 with several brownish short 

 sheathing bracts. 



Perianth-tube, nearly obsolete II. I. BRACTEATA 

 Perianth-tube f in. long . 12. I. PURDYI 

 ***** Stem I to 2 ft. high or more. 

 j* Stem hollow. 



Perianth-tube almost obso- 

 lete ; falls much veined, 

 blade orbicular ; fruit ob- 

 tusely trigonous 



Perianth-tube \ in. long ; 

 falls not veined, blade 

 oblong, lower half with 

 tortuous white streaks ; 

 fruit sharply angled 

 ((Stem solid. 



Limb i \ to 2 in. long, stand- 

 ards \ to \ in. broad, falls 

 f to I in. broad, leaves not 

 splitting into coarse fibres 1 5. 



Standards \ in. broad, falls 

 ^ in. broad, limb ij to 2 

 in. long 



Standards \ to f in. broad, 

 falls \ in. broad near tip, 

 stem sharply two-angled, 

 pedicel I \ in. long 



13. I. SIBIRICA 



14. I. DELAVAYI 



1 6. 



I. MISSOURIENSIS 

 I. PRISMATICA 



17. I. GRAMINEA 



