166 BOTANY. 
RUBIACEJE. 
OLDENLANDIA (HOUSTONIA) HUMIFUSA, Gray, Pl. Wright. 2, p. 68. On the Llano Estacado and : 
Pecos; March. A vernal state. . 
OLDENLANDIA ANGUSTIFOLIA, Gray, l. c. Fort Washita and Western Texas; April, May. ; 
GALIUM ÅPARINE, Linn. On the Colorado; April. Not in flower. 
VALERIANACEJE. |] 
FEDIA AMARELLA, Lindh. in Gray, Pl. Lindh. 2, p. 211. On the Colorado, &c., Texas; April, 
May. >. 
COMPOSIT A. 
MACHJERANTHERA TANACETIFOLIA, Nees; Gray, Pl. Wright. 1, p. 90. On the Llano Estacado 
and Western Texas; March to May. 
ERIGERON srRIGOSUM, Jul; Torr. and Gray, Fl. 2, p. 116. Near Fort Washita; April. 
ERIGERON DIVERGENS, Torr. and Gray, l. c.; Gray, Pl. Wright. 1, p. 91. From the Pecos to 
the Colorado, Texas. Various forms. 
DIPLOPAPPUS ERICOIDES, Torr. and Gray, Fl. 2, p. 182. New Mexico to the Colorado; March, 
April. Various forms. 
TOWNSENDIA SERICEA, Hook, Fl. Bor.-Am. 9, p. 16, t. 119. Guadalupe mountains, New Mex- 
ico; March. ; 
CHÆTOPAPPA ASTEROIDES, DO. Prodr. 5, p. 301. Western Texas; April, May. 
APIANOSTEPHUs RAMOsISSIMUS, DC. Prodr. 5, p. 310; Gray, Pl. Wright. 1, p. 93; Torr. in 
Marcy's Rep. t. 9. Big Springs of the Colorado; April. 
APHANOSTEPHUS ARKANSANUS, Gray, l. c. Western Texas; May. 
BELLIS rNTEGRIFOLIA, Michæ. Fl. 1, p. 131. Western Texas; May. 
APLOPAPPUS SPINULOSUS, DC. Prodr. 5, p. 348. From the Pecos to the Colorado, Texas. 
XawTHISMA Texanum, DC. Prodr. 5, p. 94; Gray, Pl. Wright. 1, p. 98; Torr. in Marcy's 
Rep. t. 10. Western Texas, May. 
Bornago CANADENSIS, Linn. Near Fort Washita; April. Not in flower. 
CALYMMANDRA CANDIDA, Torr. and Gray, Fl. 2, p. 262. (Plate II.) Western Texas, on the 
upper Colorado; April. This has scarcely been collected since it was gathered by Drummond. 
FILAGINOPSIS MULTICAULIS, Torr. and Gray, Fl. 2, p. 263. (Plate III.) On the Pecos and Llano 
Estacado; March. Western Texas; April. Sterile corollas, naked at the summit, but bearing 
a few long wooly hairs near the base. 
PARTHENIUM HysrERoPHORUS, Linn. Pecos and Llano Estacado. 
MELAMPODIUM CINEREUM, DC. Prodr. 5, p. 518. Banks of the Pecos to the Colorado; March 
to May. 
BERLANDIERA LYRATA, Benth.; Gray, Pl. Fendl. p. 18. Llano Estacado, March. 
ENGELMANNIA PINNATIFIDA, Torr. and Gray, in Trans. Amer. Phil. Soc. and Fl. 2, p. 283; 
Torr. in Marcy's Rep. t. 11. Western Texas to the head of the Colorado; April, May. 
LINDHEIMERIA TEXANA, Gray and Engelm. Pl. Lindh. 2 p. 225. Western Texas; April. 
ZINNIA MULTIFLORA, Linn. Near Fort Chadbourne, Texas. 
ECHINACEA ANGUSTIFOLIA, DC. Prodr. 5, p. 554. Var. Western Texas; April. 
Srusra (BARRATTIA) catva, Gray, Pl. Lindh. 2, p. 228. On the upper Colorado; April. 
escorts AMPLEXICAULIS, Cass.; DC. Prodr. 5, p. 558. Near Fort Washita; April. 
