Plants Lindheimeriaiue. 235 



Amer. Phil. Soc. I. c. p. 159. Ponds near Houston. Sep- 

 tember, &c. 



184. Commelyna angustifolia, Michx. Houston. May. 



185. Xyris Caroliniana, Walt.pl scabra : scapo apice 

 magis ancipiti, aciebus subtilissime serrulato-scabris. X. sca- 

 bra, Engel. MSS. Prairies, west of the Brazos. July. 



186. X. bulbosa, Kunth, enitm. IV. p. 11, (ex descr.) 

 With the preceding. The North American species still need 

 thorough revision. 



187. Hypoxis erecta, (3. jestivalis : scapo subunifloro 

 folia suboequante ; capsulis subglobosis, (ut in «.) In prairies 

 which have been burned over in spring. July. 



188. H. erecta, y. leptocarpa (H. leptocarpa, Engel. 

 MSS.) : floribus minoribus ; capsulis prismatico-oblongis el- 

 lipticisve ; seminibus in singulis loculis uniserialibus 4-6. 

 Sandy soil, along rivulets, June — August. 



189. Eustylis purpurea. (Nemostylis ? purpurea, Herbert, 

 in Bot. Mag. sub. t. 3779.) Open woods and prairies, from 

 Houston to the Brazos. June, July. Also, Texas, Drum- 

 mond, and Western Louisiana, Dr. Hale. The diagnostic 

 characters of this genus and Nemostylis are subjoined. Alo- 

 phia, Herb, differs, according to the character, 1 in having the 

 inner divisions of the much more unequal perigonium navicu- 

 late, and differently shaped from the outer, in the very short 

 filaments, &c, and in being tuberiferous instead of bul- 

 biferous. 



NEMOSTYLIS, Nutt. Perigonium hexaphyllo-partitum, 

 conforme, patens, segmentis fere aequalibus, tubo nullo. Fila- 

 menta dislincta, e basi lato subulata, antheris elongato-lineari- 

 bus (connectivo angusto) post anthesin spiraliter convolutis 



1 The specimens of several of these Iridaceous plants, of very similar appearance 

 in the dried state, appear to have been somewhat confused in the distribution of 

 Drummond's Texan Collection. Under No. 414 of the Third Collection, we have, 

 instead of Alophia, specimens of the Herbertia eaerulea. Under No. 415, we have 

 Nemostylis acuta (geminijiora, Nutt. Ixia acuta, Barton,) as well as Gelasine 

 Te.vana. In the latter the filaments are certainly monadelphous, and the style has 

 two or three short and simple lobes. 



