144 38. IRIDACEAE 



30. Filaments united into a tube. Perianth blue. — Species i. Naturalised in 



the Mascarene Islands. An ornamental plant. [Subtribe sisyrichinae.] 



Sisyrinchium L. 

 Filaments free or nearly so. Perianth yellow or red. [Subtribe liber- 



TINAE.] 31 



31. Stem leafy. Spathes in lax corymbs. Perianth orange-coloured. Style 



filiform, with club-shaped, erect or spreading stigmas. — Species i. 

 Naturalised in the Mascarene Islands. An ornamental and medicinal 

 plant Belamcanda Adans. 



Stem leafless. Spathes solitary or in heads. Perianth pale yellow. Style 

 very short, with thread-shaped, recurved stigmas. — Species 6. South 



Africa Bobartia Ker 



;^2. {2^.) Stigmas at the tip of the style-branches. Inner and outer perianth- 

 segments almost equal. Filaments rmited. Underground part of the 

 stem a bulb. [Tribe TIGRIDIEAE, subtribe cipurixae.] . . 33 



Stigmas on the underside of the dilated style-branches. Inner and outer 

 perianth-segments unequal. [Tribe MORAEEAE.] .... 36 



33. Style-branches simple or one of them forked 34 



Style-branches divided. Perianth-segments usually crisped. • • • 35 



34. Perianth white, divided to the ovary. ■ — ■ Species i. South-east Africa 



(Natal) Keitia Kegel 



Perianth yellow or brownish-red, with a short tube. — Species 12. South 

 Africa ; one species also naturalised in St. Helena. Used as ornamental 

 plants. HomeriaVent. 



35. Perianth yellow, divided to the ovary, twisting up in fading. Style-branches 



cylindrical, glabrous. — Species 2. South Africa (Cape Colony). 



Hexaglottis Vent. 



Perianth greenish brownish or red, with a short tube. Style-branches 



dilated, fringed on the margin. — Species 8. South Africa and southern 



West Africa. Some are used as ornamental plants. . . Ferraria L. 



36. Style-branches broadened, but not petal-like. Perianth blue ; segments 



free, the inner with the edges rolled inwards and the tip recurved. Fila- 

 ments free. Scape flattened. — • Species i. Angola and islands of 

 equatorial West Africa. Used as an ornamental plant. [Subtribe 



MARiciNAE.] Marica Ker 



Style-branches winged, petal-like. [Subtribe iridixae.j ■ ■ ■ 37 



37. Perianth-segments free, not bearded. Filaments usually united. — Species 



60. Southern and tropical Africa. Several species have edible root- 

 stocks, others are poisonous, many are used as ornamental plants. (In- 

 cluding Dielcs Salisb. and Vieusseuxia Delaroche). . . . Moraea L. 

 Perianth-segments united at the base. Filaments free 38 



38. Ovary i-celled with parietal placentas. Inner perianth-segments linear, 



acuminate. — Species i. North-west Africa (Algeria). 



Hermodactylus Adans. 



