Gladiolus Studies — I loi 



Segments oblong, distinctly pointed: 

 Perianth-tube curved: 



Segments 5-I in. broad (53) oppositiflorus. 



Segments ^i in. broad (54) blandus. 



Perianth-tube nearly straight : 



Segments nearly concolorous (55) Milleri. 



Segments with a bright red central band (56) undulatus. 



Cardinales. Flowers large, bright red, with a nearly 

 straight tube, and upper segments not distinctly hooded. 



Segments subequal, shorter than the tube. ., (57) Macowani. 



Upper segments as long as the tube (58) Adlami. 



Segments unequal, longer than the tube: 



Upper segments |-i in. broad (59) cardinalis. 



Upper segments obovate, 1-I5 in. broad: 



Lower bracts 1 5—2 in. long (60) splendens. 



Lower bracts 3-6 in. long (61) cruentus. 



Dracocephali. Flowers large, with a much-curved tube 



and upper segments hooded. 

 Flowers dull-coloured: 



Leaves f-i in. broad (62) dracocephalus. 



Leaves 1-2 in. broad (63) platyphyllus. 



Flowers bright red: 



Limb shorter than the tube (44.) psittacinus. 



Limb as long as the tube: 



Perianth 2-3 in. long (65) Leichtlinii. 



Perianth 4 in. long (66) Tysoni. 



Limb longer than the tube (67) Saundersii. 



Flowers bright yellow (68) aurantiacus. 



Subgenus IL Hebea. Spathe-valves large, green, ob- 

 long-lanceolate. Perianth-segments all with a narrow claw. 

 Side-segments about 5 in. broad: 

 Flowers red: 



Leaves with many close equal ribs (69) alatus. 



Leaves with only a thickened midrib and edge (70) spathulatus. 



Flowers greenish -yellow (71) orchidiflorus. 



Side-segments about \ in. broad: 



Flowers dull reddish (72) pulchellus. 



Flowers yello\\ish (73) bicolor. 



Side-segments about \ in. broad: 



Stems stout ; flowers few to a spike ... (74) arcuatus. 



Stems slender; flowers many to a spike: 

 Segments cuspidate: 



Upper segments i-ij in. long (75) formosus. 



Upper segments j— i in. long: 



Tunics of fine parallel fibres (76) edulis. 



Tunics lacerated from the base (77) Scullyi. 



Segments not cuspidate: 



Claw of upper segments very narrow (78) Dregei. 



Claw of upper segments not ver}- narrow (79) permeabilis. 



Subgenus IIL Schweigger.v. Spathe-valves small, 

 brown, rigid. Segments aU with a distinct slender claw and 

 small blade. 



Perianth-limb h-\ in. long. (80) arenarius. 



Perianth-limb i in. long (81) montanus. 



Of the Cape species included in the foregoing key, Gladiolus erectiflorus, 

 G. inflatiis, and G. platyphyllus are new species and were not described 

 in Baker's Handbook of the Irideco. 



Many species from other parts of the world are described in the last- 

 named work. The fifteen European and Asiatic species are named on 



