Plante Lindheimeriane. 53 
302. E. Arkansana (7. 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 ; 
elandulis 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 EK. 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. mareinata, 8 vuLoLeuca: bracteis oblongis ovali- 
lanceolatisve acutis, marginibus latissime albidis szepe pl. m. 
crispis; ramulis villosis.— Bottom lands of the Colorado. 
August. — Seeds tuberculate-rugose, as in the ordinary forms 
of E. marginata. 
304. Pitinopuyrum capiratum, Klotzsch, (cf. No. 171.) 
Low prairies, on the Colorado. September, October. 
305. Henpecanpra Texensts, Klotzsch in Erichs. Archiv, 
(1841) I. p. 252. Croton muricatum, Nutt. in Mem. Amer. 
Phil. Soc. l. 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 suflruticose, 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 Report, 1843, 
is the same species. 
