(JCTANDRffA. MONOGYNIA. ^H9 



bury, F. L. S. Flower by cultivation nearly 6 inchesin dia- 

 meter, and the leaves then become lanceolate. 



An American genus, extending- throu.^-h Peru and Chili 

 into Pata|;-onia, with the exception of 2 species at the Cape 

 of Good Hope. 



361. CLARKIA. Pursh: 



Calix 4-cleft, tubulous. Corolla of 4 petals-, 

 unj^uiculate, cruciately 3-lobed. Stamina 4 im- 

 perfect, with roundish antliers. Stigma peta- 

 loid, 4-Iobed. Capsule 4-celIed. 



A. biennial or annual and herbaceous plant, with the en- 

 tire habit of (Eiiothera. Leaves alternate, narrow; flowers 

 alternate, subsessile, purple. 



Species. 1. C. pnlchella. v.s. Discovered in Northern 

 • California by the late governor Lewis, on the banks of two 

 of the principal branches of the Columbia. 



3S2. GAURA. L. 



Calix 4 -cleft, tubular. Corolla of 4 petals, as- 

 cending towards the upper side. wWquadrau- 

 iar, 1 to 4 -seeded. 



Habit similar to CEhg there, to the last section of whicit 

 it closely approaches. Leaves alternate, flowers spiked, 

 mostly rosaceous. Germ 4 or more seeded; capsule by 

 abortion 1-seeded. (Leaves impunctate.) 



Species. 1. G. biennis. 2. imgiisiifolia. 3. * coccinea. 

 Perennial; stems simple, decumbent, several from the 

 same root; leaves linear-lanceolate, repandly denticulate., 

 canescent and partly villous; raceme lax, many-flowered, 

 petals roundish, filiformly unguiculate, a little longer than 

 the calix; stigma 4-tootlied; fruit acute at both extremi- 

 ties, 4-seeded Hab. On the declivities of bare gravelly 

 hiRs, from tlie Maha village to the Mandans. A bout a foot 

 high, covered with a short and hoary villous pubescence, 

 leaves crowded; flowers at first rose colour, at length be- 

 coming pale scarlet. Flowering in May. 



Of this genus there are 2 other species in Mexico and 

 1 in tropical x\merica. 



363. EPILOBIUM. L. (Willow-herb.) 



Calix 4-clert, tubulous. Corolla of 4 petals. 

 Capsule oblong inferior. Seeds comose. 



