*«S TRIANDRIA. MO.VOGTNIA, 



2. Ceerulea. Stem setaceous; leaves minute, subu= 

 late; flowers disposed in a bifid spike or cyme, some- 

 times simply in ] airs, or in still smaller plants solitary; 

 coloured blue; the winged margins ot the capsule partly 

 cuneaie, truncate ai the sunimit. 



Biirmannia bifora. L. 'I'ripterella ceerulea of Muh- 

 lenberg's Ciitalogue, and Mr. liUiot's " Sketcnes of the 

 Botany of South Carohnaand Georgia," p. 4S. 



Obs. This genus appears to be scarcely distinct from 

 Burmannia, but seems to differ m the tlefect of 3 of the 

 stamens, and the situation of the capsule below the calix. 



Near the margin of sandy ponds, from Florida to Vir- 

 ginia, (scarce.) f lowenjig neax-iy the whole year. 



S3. IXIA. L, 



Spatha 2-3 valved, ovate, short. Corolla 6- 

 paried tubiilose; tube sotnewhat slender, with the 

 style and stamina straight; border nearly' sal- 

 ver-shaped, divisions sub-elliptic, flat. Stig- 

 ma almost filifiirm. (Filaments including the 

 style; mostly connate.) 



Species. 1. / ccelesti?iu. A very scarce plant, and of a 

 doubtful genus; discovered in Florida by Mr. Barlram. 



Obs. The whole of this genus, with the exception of 

 the present species, the / Chine7isis, and the /. Bulbsco- 

 dium of Europe, is peculiar to the Cape of Good Hope. 



34. IRIS. (Flag, Flower de luce.) 



Corolla 6-parted, large; three of the lamina 

 erect; the other 3 reflected, with or without a 

 crest or beard on the inner side, and bearing 

 the stamina at their base. Style short; stig- 

 mata 3 petaloid, oblong, large, usually arched. 

 Stamina incumbent, covered by the stigmata. 

 Capsule 3-celIed, 3-valved, many-seeded. Seeds 

 flat, triangular; (in some species nearly round 

 or spherical.) 



Flowers terminal, solitary, or alternately disposed upon 

 a scape; spatha 1 or more flowered; scape often com- 

 pressed. Root a simple or double bulb; mostly an hori- 

 zontal tuber. Tlie genus Iris is remarkable for producing 

 flat, eusiform or sword -shaped leaves with sheathing mar- 



