Plantce Lindheimeriancp. 237 



water- courses. July. — Climbing to a great height. The rhi- 

 zoma bears tubers which are called " Indian bread " in Texas. 

 Leaves varying from narrowly lanceolate to almost ovate. 

 Stem prickly below. 



196. Cooperia Drtjmmondii, Herbert. Dry prairies from 

 Galveston to the Brazos ; flowering from June to November, 

 but mostly in July, and only after heavy rains. 



197. Aletris aurea, Walt. Houston. April. 



198. Scilla (Kamassa, sed perigonium regulare) angusta 

 (n. sp.) : gracilis ; foliis linearibus apice longe attenuato-seta- 

 ceis flaccidis scapo brevioribus ; bracteis e basi lanceolata 

 membranacea subulatis pedicellos erecto-patentes subaaquanti- 

 bus ; alabastris oblongo-linearibus ; foliolis perigonii linearibus 

 obtusis stamina duplo superantibus. — Open woods and prai- 

 ries, in south-western Missouri and Arkansas, as well as Texas : 

 flowering from April to May in Texas, but from May to the 

 middle of June in Missouri and Arkansas, when S. esculenta, 

 growing in the same region, has matured its seeds. The 

 present plant is more slender than S. esculenta, with narrower 

 leaves, sepals, etc. ; but perhaps it is only a variety. — We are 

 slow to believe that the Oregon species belongs to a different 

 genus from the eastern. 



199. Allium mutabile, Michx. Dry open woods, Houston. 

 April. The capsule, in all our specimens, is one-seeded ; the 

 flowers usually rose-red, but sometimes white. 



200. Ruppia maritima, Linn. Salt water ponds, Galves- 

 ton Island. 



201. Cyperus vegetus, Linn. Wet prairies. May. 



202. C. ovularis, Torr. In dry and wet places. April 

 to June. 



203. C. tetragonus, Ell. Dry prairies near Houston. 

 May and June. Style 3-cleft. 



204. Fuirena hispida, Ell. Springy places west of the 

 Brazos. August. 



205. Eleocharis arenicola, (Torr. MSS.) : culmis sub- 

 spithamreis compressis sulcatis e rhizomate repente praelongo ; 



