BOTANY. 167 
AcTINOMERIS HELIANTHOIDES, Nutt, Gen. 2, p. 181. Near Fort Washita; April. 
THELESPERMA FILIFOLIA, Gray, in Hook. Kew. Jour. Bot. 1, p. 252, and Pl. Wright. 1, p. 109. 
Head-waters of the Colorado; April. Also probably T. gractzis; but not yet in flower. 
CoREOPSIS GRANDIFLORA, Nutt.. Torr. and Gray, Fl. 2, p. 345. On the Colorado; April. 
Corzopsis Trncrorta, Nutt. Near Fort Washita; April. 
Curysactin1a Mexicana, Gray, Pl. Fendl. p. 93. Near Independence Spring; March. With- 
out flowers. 
HYMENATHERUM (ACIPHYLLZA) AcERosuM, Gray, Pl. Wright. 1, p. 115. On the Pecos and 
Llano Estacado; March, April. 
HYMENATHERUM PENTACHZTUM, DC. Prodr. 5, p. 642. On the Pecos; March. 
AGASsIZIA suAVIS, Gray and Engelm. Pl. Lindh. 2, p. 220. Western Texas; April. 
GAILLARDIA AMBLYODON, Gray; Torr. and Gray, Fl. 2, p. 267; Gray, Chl. Bor.-Am. t. 4. 
Western Texas; April. 
GAILLARDIA PINNATIFIDA, Torr. in Ann. Lyc. New York, 2, p. 214; Torr. and Gray, Fl. 2, p. 
366. Llano Estacado to the Colorado; March, April. 
GAILLARDIA PULCHELLA, Fougeroux; Torr. and Gray, l.c. Western Texas; April. 
HyMEnopaprts corrMposus, Torr. and Gray, Fl. 2, p. 272. On the Colorado, &c.; April. 
BAHIA ABSINTHIFOLIA, Benth. var. DEALBATA, Gray, Pl. Wright. 1, p. 121. On the Pecos; 
March. 
RIppELLIA TAGETINA, Nutt.; Torr. and Gray, Fl. 2, p. 262; Torr. in Emory’s Rep. t. 5. 
Llano Estacado ; March. 
AMBLYOLEPIS SETIGERA, DC. Prodr. 5, p. 568; Gray, Pl. Wright. 1, p.121. From the Llano 
Estacado to the lower Colorado ; March, April. 
Acrineita scaposa, Nutt. in Torr. and Gray, Fl. 2, p. 382. On the Pecos and Llano Esta- 
cado; March. 
ACTINELLA LINEARIFOLIA, Nutt.; Torr. and Gray, l.c. On the Pecos. 
AcTINELLA Ricuarpsontt, Nutt. Picradenia Richardsonii, Hook. Near the Pecos; March. 
HELENIUM TENUIFOLIUM, Nuétt.; Torr. and Gray, Fl. 2, p. 385. Western Texas; April. 
MARSHALLIA caHsPITosA, Nutt. in DC. Prodr. 5. p. 680. On the upper Colorado; April. 
Acuittea Mitieroitium, Zinn. Near Fort Washita and on the Colorado. 
ARTEMISIA DRACUNCULOIDES, Pursh; Torr. and Gray, Fl. 2, p. 216. Sacramento river to 
the Llano Estacado ; March. 
Akremisia Lewisu, Torr. and Gray, Fl. 2, p. 217. Pecos to the Llano Estacado ; March. 
Arremista Lupovictana, Nutt.; Torr. and Gray, Fl. 2, p. 420. Cotton-wood Springs, New 
Mexico, &c.; March. 
GNAPHALIUM LUTEO-ALBUM, Zinn. New Mexico and Western Texas. 
Senecio Fiuirotius, Nutt. var. Jamesu, Torr. and Gray, Fl. 2, p. 444. On the Pecos and 
upper Colorado. 
Senecro topatus, Pers.; Torr. and Gray, l.c. Western Texas; April. 
Crestum Virerstanum, Miche. Fl. 2,%. 90. Western Texas; April. 
CrrsIuM unDULATUM, Spreng.; DC. Prodr. 6, p. 651. Llano Estacado, &c. 
CENTAUREA AMERICANA, Nutt. Near Fort Washita; April. 
PrREzIA NANA, Gray, Pl. Fendl.p. 111. On the Pecos; March. The foliage only. 
Apocon numinis, HU. Sk. 2, p. 267. Western Texas; May. 
Krieia occipentais, Nutt.; Torr. and Gray, Fl. 2, p. 467. Western Texas; May. 
