918 Engelmann and Gray, 
same as the 'Texan plant referred by Spach to G. tripetala, 
Cav.; but it does not agree with the figure of Cavanilles, nor 
exhibit any trimerous flowers. . 
62. Erynerum coronarum, Torr. & Gr. Fl. Y. p. 604. 
Bottom woodlands on the Brazos. August. 
63. Cynoscrapium pinnatum, DC. 8 pumiLum. Differs 
from the larger and erect form (which is usually a foot or two 
in height,) in its low and diffuse stems, its umbellets with only 
four or five rays, and few or no involucral leaves. Prairies, 
Galveston. April, May. 
64. Leprocautis romiwATUs, Nutt. Galveston Island. 
65. DiscoPLEvRA caAPILLACEA, DC. Galveston. May. 
66. Spermacoce GLABRA, Michx. Near Houston. Sept. 
67. MrrnEoLA PETroLATA, Torr. & Gr. Swampy thickets 
west of Houston. 
. 68. Potypremum procumsens, Linn. Houston. June. 
69. Hepyoris Boscu, DC. Houston. May and June. 
- 70. VERNONIA ANGUSTIFOLIA, var. y Torr. & Gr. Wet 
prairies west of the Brazos. July. 
71. Liatris eLecans, Willd. Houston to the Brazos. 
72. L. acipora. = L. mucronata, Torr. & Gr. Fl. I. P 
70,non DC. Houston to the Brazos, in wet praries. Au- 
gust, September. In the Flora of North America, this species; 
which is apparently common in Western Louisiana and Texas, 
was hesitatingly referred to L. mucronata, DC., from tho 
character of which it differs in some respects, principally ` 
the form of the involucral scales. But among Lindheimer § 
plants, some specimens of what is no doubt the true L. mu- 
cronata, DC. occur, (which have been distributed in some 
sets, probably mixed with L. acidota,) and which render it 
clear that the present is a different, although very ™ y 
allied species. We have accordingly given a new que 
The diagnosis may be expressed as follows ; the habit, sd 
&c. being nearly the same in both; and the involucral ane 
more or less ciliate when young. —— 
SA 
L. mucronata : capitulis in spicam strictam arcte digesti; 
