12 Englemann and Gray, 
82. S. renurronia, Pursh. Wet prairies. October. 
83. S. LeprocepHaLa, Torr. & Gr. l. c. Wet prairies, 
Houston. September.— We have two forms; one with 
broader leaves and larger heads, bearing about 5 disk and 11 
ray-flowers ; another, with narrower leaves and smaller heads, 
which have about 3 disk and 10 ray-flowers. 
84. S. Boorrn, Hook.; Torr. & Gr.l.c. Houston. July 
— September. 
85. S. rorriroiia, Ell. With the preceding. 
86. BieeLovia nupaTa, § vireata, Torr. & Gr. I. c. 
Prairies on Chocolate Bayou. September. 
87. Brappurta HiRTELLA, Torr. & Gr. Fl. IL. p. 250. 
Prairies, in hard, clayey soil, west of the Brazos. July, Au- 
gust.— The flowers of this very interesting and pretty plant 
are certainly yellow (a point which could not be positively 
determined from Drummond’s specimens,) and the genus was 
therefore rightly placed in the homochromous series. 
88. Hererorueca scaspra, DC. Houston, &c. July. 
89. Curysorsis craminirouia, Nutt.; and 
90. C. pitosa, Nutt. Houston, &c. 
91. Amprosrta coronoriroutia, Torr. & Gr. l. c. Sub- 
saline prairies, Galveston Bay, &c. July. 
92. BerLANDIERA TOMENTOSA, 8 DEALBATA, Torr. & Gr. 
l. c. Sandy prairies west of the Brazos. June. 
93. Zrinnta MuutTieLors, Linn. With the preceding. 
94. Ecurnacea ancustirot1a, DC. Pine woods near 
Houston. April, May. The slender and original form of 
this species, which varies much as does E. purpurea. 'The 
peduncles are scarcely incrassated at the summit, the head 
hemispherical, with 8 to 13 narrow, rose-colored rays. The 
northern form, (E. sanguinea, Nutt.) is a much stouter plant, 
the peduncle much thickened at the summit, the head twice 
the size, and at length conical, with 12 to 16 dark red rays. 
Both forms are quite variable. 
95. Rupgsecxia aLismzrouia, Torr. & Gr. l.c. Houston 
to the Brazos. 
