BOTANY. 53 
DALEA FRUTESCENS, Gray, Pl. Lindh. 2, p. 175. Hills and rocky places along the Rio Grande 
and its tributaries, August—September. 
了 ALEA spinosa, Gray, Pl. Thurb. р. 315; Torr. Bot. Parke, in Pacif. В. Road Expl. 7, p. 9, 
t. 3. On the lower Rio Gila; Thurber. Dry beds of rivers in the Californian desert; Schott. 
The leaves of young shoots and seedlings are obovate-oblong, toothed and dotted with glands. 
Darra ScHorti (n. sp.): fruticosa ; ramis flexuosis glaberrimis, ramulis in spinas subpun- 
gentes abuentibus; foliis simplicissimus sparsis anguste linearibus; pedunculis 2-3-floris ; 
calycis dentibus late ovatis tubo glabro eglanduloso duplo brevioribus; corolla violacea. Dilu- 
vial banks of the Colorado, February; Schott. Branches zigzag, smooth, yellow. Leaves 8-10 
lines long, scarcely a line wide, hoary-pubescent above, green, and marked with row of impressed 
dots on each side underneath. Flowers produced at the extremity of short branches, usually two 
together, on shomé pedicels; the bracts resembling the leaves, only smaller. Calyx without 
glands, somewhat turbinate, smooth, the broad teeth pubescent on the margin. Corolla deep 
violet. Pods not seen. 
PETALOSTEMON EXILE, Gray, Pl. Wright. 2, p. 51. Hills and rocky places at the Copper Mines, 
New Mexico, September ; Bigelow. Santa Cruz, Sonora; Thurber. 
PETALOSTEMON CANDIDUM, Micha. Fl. 2, p. 49, t. 37, f. 1. Near the Copper Mines, and low 
places between Van Horn’s Wells and Muerte, July; Bigelow. Rio de Sta. Cruz and Prodrero, 
Sonora, June; Schott. Our plant resembles Fendler’s specimens named P. gracile by Dr. 
Gray, but it is erect. 
PETALOSTEMON EMARGINATUM, Torr. Ё Gray, Fl. 1, p. 311. Near Ringgold Barracks; Schott. 
We have never before received specimens of this plant since it was sent to us from Drummond's 
Texan collection. 
RoBINIA NEo-MEXICANA, Gray, Pl. Thurb. p. 315. Along the Mimbres, New Mexico; Thurber, 
and on Ben Moore, near the Copper Mines ; Bigelow. 
AMORPHA LAEVIGATA, Nutt. var. PUBESCENS, Gray, Pl. Wright. 1, p. 49. Hills at the Copper 
Mines, and on the Rio Grande below the mouth of Escondido creek, March ; Bigelow, Schott. 
Hardly distinct from the next. 
Amorpua FRUTICOSA, Linn.; Torr. & Gray, Fl. 1, p. 305. А. Californica, Nutt. l. с. Moun- 
tains east of San Diego, California; Parry. Mabibi, Sonora, June; Thurber. I can find no 
reliable characters for distinguishing the two species here united. Mr. Nuttall’s plant was 
described from specimens in which the flowers were scarcely unfolded, and the fruit of which 
was not collected. 
GHYCYRRHIZA LEPIDOTA, Nutt. Gen. 2, p. 106; Bot. Mag. і. 2150; Gray, Pl. Wright. 1, p. 50. 
G. glutinosa, Nutt. in Torr. & Gray, Fl. 1, p. 298. Valley of the Rio Grande below San 
Elceario, June; Thurber. Ojo de Vaca, Chihuahua; Thurber. San Felipe, California; Parry. 
Mepicago sativa, Linn.; Torr. & Gray, Fl, 1, p. 321. Banks of the acequia, near El Paso, 
Мау; Bigelow. This is no doubt an introduced plant. It seems to be naturalized in many 
parts of the Mexican States. 
MEDICAGO DENTICULATA, Willd.; Torr. Ё Gray, l. c. Naturalized in western Texas, New 
Mexico and the Mexican States west of the Rio Grande; also throughout California, wherever 
the Spanish missions were established. 
w— 
