Planta Lindheimeriance. 261 



302. E. Arkansana (n. sp.) : annua, gracilis, glaberrima ; 

 caule erecto ramoso ; foliis sparsis spathulato-obovatis apicem 

 versus serrulatis mucronato-acutis sessilibus, inferioribus in 

 petiolum angustatis ; umbellis trichotomis bis dichotomis ; 

 bracteis rotundatis subcordato-ovatis mucronatis serrulatis ; 

 glandulis involucri (aurantiacis,) orbiculatis;capsulis verrucosis; 

 seminibus (brunneis) reticulatis. — Prairies, from Houston to 

 the Colorado. April — July. Also, Fort Gibson, Arkansas, 

 Engelmann, and Western Louisiana, Dr. Hale. — Plant 8 

 to 12 inches high, with much the appearance of E. peploides, 

 Nutt. ; which abundantly differs in its entire and retuse 

 leaves, entire and more cordate bracts, smooth capsules and 

 smooth seeds. The seeds and serrulate leaves in our plant 

 are more like E. Helioscopia on a small scale, but, besides that 

 ours is much more slender and smaller in all its parts ; the 

 broadly-ovate acute bracts are very different. 



303. E. marginata, /3 ULOLEUCA : bracteis oblongis ovali- 

 lanceolatisve acutis, marginibus latissime albidis saepe pi. m. 

 crispis ; ramulis villosis. — Bottom lands of the Colorado. 

 August. — Seeds tuberculate-rugose, as in the ordinary forms 

 of E. marginata. 



304. PlLINOPHYTUM CAPITATUM, KlotZSCh, (cf. No. 171.) 



Low prairies, on the Colorado. September, October. 



305. Hendecandra Texensis, Klotzsch in Erichs. Archiv, 

 (1841) I. p. 252. Croton muricatum, Nutt. in Mem. Amer. 

 Phil. Soc. 1. c. p. 173. Prairies on the Colorado, the sterile 

 and fertile plants generally intermixed, and covering large 

 patches of ground. An annual plant, about three feet high. 

 Leaves often lanceolate-oblong, and half an inch wide ; those 

 of the fertile plant greener above than in the sterile, as de- 

 scribed by Nuttall, but often wider rather than narrower. 

 Stigmas 20-24. The hypogynous disk orbicular. — Klotzsch 

 wrongly describes the stem as suffruticose, and has not noticed 

 the flocciferous soft tuberculi of the capsule, which are as evi- 

 dent in our Drummondian specimens as in those of Lindhei- 

 mer. The H. multiflora, Torr. in Fremont's Rejwrt, 1843, 

 is the same species. 



