Plante Lindheimeriane. 189 
plants in cultivation, do I discern any distinction in the flow- 
ers or pods. On the Upper Platte and Canadian, Fremont 
and Mr. Gordon have gathered specimens in which even the 
full-grown leaves &c. are silvery-canescent; namely, var. 
y- INCANA: foliis lanceolatis vel ovatis undique argenteo- 
incanis. 
399. Œ. (LavauxiA) TRILOBA, Nutt. in Jour. Acad. 
Philad. 2. p. 118; Hook. Bot. Mag. t. 2566; Torr. & Gray, 
l.c. Œ. Roemeriana, Scheele in Linnea, 92. p. 154. Mus- 
kit flats, New Braunfels. March, April. In cultivation, and 
I think also in the wild state, this is a biennial. It forms a 
dense cone of pods at the crown, which rises to the height of 
two or three inches in the course of the season, and the root 
does not survive the winter. The flowers, which open about 
sunset, are cream-colored or nearly white. 
393. CE. (MERIOLIX) sERRULATA ô. SPINULOSA, Torr. & 
Gray, Fl. 1. p. 502; subvar. floribus, ut in No. 938, maxi- 
mis, calycis fauce cum stigmate ssepius atropurpurea interdum 
fusca v. flava. — Rocky banks of the Cibolo River. April. 
In cultivation, as in the wild plant, the throat of the calyx 
and the disk-shaped stigma, one or both, are sometimes deep 
black-purple, sometimes brownish or yellow. The plant 
forms rather stout and decumbent woody stems, two or three 
feet long, producing a great number of branches, and flower- 
ing throughout the summer. 
394. CE. sERRULATA, £. PINIFOLIA, Basin: foliis angus- 
tissimis fere filiformibus seepe fasciculatis marginibus revolutis 
integris; floribus maximis (ut in precedente). Œ. capilli- 
folia, Scheele in Linnea, 21. p. 577. Rocky prairies, New 
Braunfels. April. — This is just the CE. serrulata var. spinu- 
losa, except that the leaves are extremely narrow. It is vain 
to attempt to erect the varying forms of this and other poly- 
morphous CEnotherz into separate species. 
(55.) Œ. speciosa, Nutt. New Braunfels, March. 
(53.) CE. Drummonpu, Hook. Galveston. March to May. 
+ CE. — (Torr. & ge Fi. 1. p. 693): pube ap- 
JOURNAL B. N. H. JAN. 1850. 
