loo Cornell Extension Bulletin 9 



Stem-leaves with long, free points: 

 Leaves subulate or very narrow: 

 Flowers erect or suberect: 



Segments shorter than the tube (20) tenuis. 



Segments equalling the tube (21) debilis. 



Segments rather longer than the tube (22) Bolusii. 



Segments 2-3 times the length of the tube: 



Flowers bright lilac (23) biflorus. 



Flowers pale yellow (24) erectiflorus. 



Flowers horizontal with a curved tube: 

 Flowers 1-4 in a spike: 



Upper segments 3-5 in. broad: 



Flowers white (25) cochleatus. 



Flowers bright red (26) Rogersii. 



Flowers pink (27) Pappei. 



Upper segments |-f in. liroad: 



Corm-tunics of fine fibres (28) inflatus. 



Corm-tunics of wiry strands (29) spathaceus. 



Flowers many in a spike (30) involutus. 



Leaves linear: 



Leaf -sheaths glabrous: 



Perianth-tube i§ in. long (31) hyalinus. 



Perianth-tube i in. long (32) vittatus. 



Perianth-tube f in. long (33) striatus. 



Perianth tube 5-5 in. long: 



Segments half as long as the tube (34) paludosus. 



Segments twice the length of the tube: 



Produced leaves 2 (35) niveni. 



Produced leaves 3-4: 



Stamens half as long as limb (36) punctatus. 



Stamens as long as the lower segments (37) iDrachyscyphus. 

 Leaf-sheaths hairv' (38) villosus. 



B. Leaves ensiform. 



Parviflori. Perianth-tube under an inch long. 

 Spikes equilateral; flowers very numerous: 

 Flowers red: 



Perianth-tube \ in. long (39) crassifolius. 



Perianth-tube f in. long (40) Elliotii. 



Flowers yellow: 



Stem pubescent (41 ) Ludwigii. 



Stem villose. . (42) sericeo- villosus. 



Spikes secund; flowers fewer: 



Flowers yellow (43) ochroleucus 



Flowers red: 



Upper segments | in. broad: 



Perianth-tube | in. long (44) Kirkii. 



Perianth-tube | in. long (45) Eckloni. 



Upper segments f in. broad; two inner lower with a 

 large dark blotch: 



Flowers yellow (46) purpureo-auratus. 



Flowers purple: 



Outer spathe-valve i-i^ in. long (47) PapiHo. 



Outer spathe-valve I5-2 in. long (48) Rehmanni. 



Blandi. Perianth-tube 1-2 in. long ; flowers white or pale red. 

 Segments obovate, obscurely pointed: 

 Sheaths and leaves hairy: 



Segments as long as the tube (49) hirsutus. 



Segments shorter than the tube (50) salmoneus. 



Sheaths and leaves glabrous: 



Perianth-tube i-i j in. long (51) scaphochlamys. 



Perianth-tube i J-2 in. long (52) fioribundus. 



