162 
BOTANY. 
late filaments from>a "broad base, and oblong 2-celled anthers. Opposite the shorter or interior 
stamens, (and alternating with the exterior ones,) were five ovate scales or petals. The char¬ 
acters of the calyx were not satisfactorily determined. There was no disk perceptible in the 
bud, and it is very inconspicuous in the flowers that had not matured their fruit. There are 
five one-celled oblong ovaries, which slightly cohere towards the base, each produced into a short 
incurved beak or horn. The styles are distinct, and arise from near the middle of the carpels 
on the inside; but the stigmas are united into an oblong 5-grooved head. Ovules two in each 
cell, collateral, inserted at the origin of the style. Only two of the carpels ripen. They are 
sessile, slightly united at the base, broadly ovate, compressed, dotted with small brown glands, 
and mucronate with the persistent base of the style; but the beak, which in the ovary was at 
the summit of the cell, has now become a dorsal tooth. At an early period the capsule opens 
nearly the whole lenglh of the ventral suture, and down the back as far as the tooth. The 
endocarp also separates almost entirely from the epicarp. The seeds are usually solitary in 
each cell. They are ovate-globose, black and shining. The embryo is broadly oval, slightly 
curved, flattish, with a very short radicle; and there is little or no albumen. 
ANACARDIACEiE. 
Rhus glabra, Linn. Near Fort Washita; April. 
Rhus trilobata, Nutt, in Torr. and Gray, FI. 1, p. 219. On the upper Colorado, Texas; 
April. 
Rhus microphylla, Engelm. in PI. Wright. 1, p. 31. With the preceding species. 
VITACEiE. 
Vitia rupbstris, Scheele, in Linncea, 21, p. 591. Western Texas; April 21. In flower. 
RHAMNACEflE. 
Ceanothus ovatus, Desf. (C. ovalis, Bigelow.) Near Fort Chadbourne; also a downy variety 
on the Colorado, Texas. 
Zizyphus lyciodes, Gray, PI. Lindh. 2, p. 168. Western Texas; April. 
Microrhamnus ericoides, Gray, PI. Wright. 1 , p. 34. Near Delaware Springs, &c.; March. 
SAPINDACEAD. 
Sapindus marginatus, Willd.; Gay, Gen. III. 2, t. 180. Pecos and Llano Estacado. Called 
Wild China in Texas and Arkansas. 
Ungnadia speciosa, Endl.; Gray, Gen. III. 2, t. 178, 179. Big Springs of the Colorado and 
elsewhere; April. 
POLYGrALACEiE. 
Polygala alba, Nutt. Gen. 2, p. 87. Llano Estacado, Colorado, &c. 
Polygala macradenia, Gray, PI. Wright. 1 ,p. 38. On the Pecos ; March. 
Krameria lanceolata, Torr.; Gray, Gen. III. t. 187, 188. Western Texas; April. 
LE GrUMIN OSiE. 
Vicia Leavenworthii, Torr. and Gray, FI. 1 , p. 271. On the upper Colorado, Texas; April. 
Vicia exigua, Nutt, in Torr. and Gray, l. c.; Gray, PI. Wright. 2, p. 32. Llano Estacado; 
March, April. 
Tephrosia Virginiana, Pers. Syn. 2, p. 328. Western Texas ; May. 
Amorpha fruticosa, Linn. var. On the upper Colorado; April. 
