62 UNITED STATES AND MEXICAN BOUNDARY 



Acacia CoulterIj Benth. ?. c; Gray^ PL Wright, 2^ p. 53. Eagle Pass and plains, and plains 

 near Zoquete Creek ; Bigelotu, 



Acacia flexicaulis^ Benth.; Gray^ I. c, l^p. 65, adnot, Monterey, Neiivo Leon^ &c.; TImrher, 

 This is clearly the same as Gregg's plant. 



Acacia cuspidata, SchlecJit, in Liiincea^ 12^ p. 513; Gray^ PL Wright. 1^ p. 66. A. hirta; 



Ntttt. in Torr. & Gray^ FL 1, p, 404. A. Texensis^ Tori\ & Gray^ I. c. Plains and dry places 

 along the Rio Grande^ and in New Mexico ; also in Sonora ; June — October. After a careful 

 comparison of numerous specimens of the first and last species here quoted with an original 

 specimen of A. Texensis, I unite the whole without hesitation. 



Acacia constkicta^ Bentlu in Gray^ PL Wright. 1, p. 64. Hills along the Rio Grande, from 

 El Paso to the Presidio del Norte ; also near Tascata, and in Sonora ; May — ^July. Sometimes 

 the leaves have only 1 or 2 pairs of pinna3 ; hut such occur chiefly on very short hranches or 

 spurs. The leaves and young branches are strongly pTibescent in specimens collected near the 

 Presidio del Norte by Dr. Parry. 



A, 



Acacia Schottii (n. sp.:) glabra; spinis stipularibus subulatis rectis ; foliis fasciculatis 

 unijugis ; ioliolis 3 — 5-jugis filiformi-linearibus alternis ; legumine lineari complanato toruloso 

 curvato, valvnlis coriaceis. Near the Caiion of San Carlos^ at the Comanche Crossing of the 

 Rio Grande, September, (in fruit); Parry. Branches flexuous terete. Petiole. below the fork 

 one-third of an inch long. Pinole an inch in length. Leaflets 2 lines long, and scarcely^ of a 

 jine wide, thick. Spines 2 — 3 lines long. Peduncles slightly bracteate in the middle. Stamens 

 very numerous. Legume 2 — 3 inches long, and \ of an inch wide, elevated on a short stipe, 



circle; or even a nearly complete circle. This is a very distinct 



6 



semi 



species, but seems to be allied to A. constricta. 



Acacia Fahnesiana. Willd, A. Cavenia. Hooh. & Am. Bot. Beechey, p. 21 ; Bentli. Mimos 



Hook 



Bot, L c. Common on the boundary from Texas to California. 

 Willd. So. 4, ». 1083, Benth, Mimos. in Hook. Lond. Jour. Bot. 



A. albicla. Lindl. Bot. Beg. t. 1317. Vacliellia Lindheimeri seu minor. Engelm. MS. in 



o 



Grande, and on hill sides, Santa Rosa, Chi- 



mis 



lierh. Gray. Plains near Ei 



huahiia ; Bigeloiu. Tamaulipas ; Berlandier. 



Farnesiana ; but Dr. Engelmann had distingiushed it even in that state. Flowering specimens 



have bten confounded with A. Cavenia, which is only A. Farnesiana. The present species is 



well distinguished by its pod, which is elongated-linear, 3 to 5 inches long, narrow, nearly 



terete, moniliform, fleshy, and minutely toraentose ; seeds 



black. Tl 



corolla is longer than in A. Farnesiana. The heads and peduncles are nearly glabrous in our 

 specimens." — A. Gray. 



7 



Cohahuila ; Dr. Edivards, Thurber. ^ 



PiTiiECOLOBiUM BREViFOLiUM, Benth. in Gray, PI. Wright. 1, p. 67. Rocky hills around the 



Coahuila 



(with fruit of the preceding season ;) 



ROSACEiE. 



Prunus (Cerasus) Virginiaxa, Linn. Sp. 1, p. 473. Dry ravines near Camp Bache, New 

 Mexico, and at the Copper Mines ; July; in fruit. 



Prunin Capollin, DG. Frodr. 2, p. 539, (sub Ceraso;) Gray, PI. Wright. 2, p. 544. Sides 

 of the Limpio mountain, Texas ; Bigelow. Sierra del Pajaritos, &c., Sonora ; Schott, Capi. E. 

 K. Smith. 



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