TRIANDRIA.— MONOGYNIA. 3* 



26. IRIS. Flag. Flower-de-lace. Iridece. 



i. I. versicolor: flowers beardless; stem terete, more 

 or less flexuous ; germen somewhat triangular ; 

 leaves ensiform. 



et. sulcata : stem slightly compressed ; interior petals 

 longer than the stigmas ; germen with the angles 

 distinctly sulcate ; the sides concave ; capsule 

 oblong, ventricose ; angles indistinctly furrowed. 



/3. communis : stem erect, distinctly flexuous ; leaves 

 narrow-ensiform ; interior petals a little shorter 

 than the stigmas ; angles of the germen not grooved 

 when young ; sides deeply concave ; capsule cylin- 

 drical-oblong. 



HAB. In water. May — June. If.. Root large, creeping ; 

 2 — 3 ft. high ; ft. blue, variegated with yell. 

 9. I. virginica ; flowers beardless ; stem solid, terete ; 

 leaves very long and narrow ; capsule elongated, 

 prismatic, acute at each end. 



HAB. Swamps. June. %.Stem 3— 5ft. high, slender; 

 leav. half an in. broad ; angles of the germ, deeply 

 grooved. 

 >. I. lacustris: flowers without a bearded crest; leaves 

 ensiform, much longer than the 1 -flowered scape ; 

 petals nearly equal, attenuated on the tube ; capsule 

 turbinate, 3-sided, margined ; roots tuberous. 

 HAB. Gravelly shores of 1. ikes. June. Leaves 3-5 in. 

 long; scape very short, compressed ; pet. emarginate. 



27. LACHNANTHES. Hcemodoracece. 



\a. tinctoria. 



HAB. Sandy swamps, in pine barrens. July. %. Root 



red, fibrous ; stem 2-ft. high simple, woolly above ; ft. 



corymbose, woolly, yellow within. 



28. COMMELINA. Day-flower. Commelinece. 

 V. C. angustifolia : assurgent, slender, rather smooth; 

 petals unequal, (one very minute ;) leaves linear- 

 lanceolate ; bracts peduncled, short-cordate. 

 li VB. Borders of swamps. June. V-. Leaves sheathing, 

 riliate at the throat ; bracts subfalcate ; ft. blue : 

 fertile stam. 2. 

 ' '. virginica : petals nearly equal ; stem erect, a little 



