^QQ UNITED STA7E3 AND MEXICAN BOUNDARY. 



acuminatis cordatisj aiiriculis approximatis rotundatis paberulis ; pedunculis petiolid sul)a3qua- 

 libiis 3-5-flaris ; corolla canipanulataj tubo brevi, laciniis lanceolatis erectis ; corona stam. 

 cupiiliformi crenato gynostegio breviore ; follicnlis (immaturis) lasvibus. Climbing over bushes. 

 Banks of Eoclr Creek ; Bigeloiu. Valley of the Limpio^ and along the Rio Grrande^ June ; Parry, 

 (No. 1675, Wright,) It was also found by Dr. Gregg, in Cadena, Mexico, Plant 2-4 feet 

 long, twining around low bushes or trailing on the ground. Lower leaves about 2 inches long ; 

 the deep sinus at the base often almost closed by the approximation of the auricles. Sepals 

 ovate-lanceolatCj with a minute gland on the inside of each sinus. Corolla about 4 lines long, 

 mostly of a dull purple color, but sometimes greenish. Stamineal crown a shallow cup, about 

 two-thirds the length of the gynostegium, with the margin crenate or slightly lobed. On the 

 inside are 5 adnate processes which are connected with the gynostegium and outwards terminate 

 in a short tooth which is not exserted. Stigma obtusely 5 angled. Pollen-masses short and 

 roundish. There are no ripe pods in the collections. 



GoNOLOBUs(?) PAEViFOLius (n. sp.) : pubescens ; caule prostrate ramosissimo vix volnbili ; 

 foliis (semiuQcialibus) deltoideo-ovatis basi cordatis crassiusculis ; floribus axillaribus solitariis 

 vel geminis sessilibus ; corolla urceolato-rotata ad mediam usq[ue 5-lobata ; corona stam. 

 5-loba5^dobis ovatis obtusis gynostegio brevioribus ; folliculis lineari-lanceolatis longe attenu- 

 atis Irovibus. Sides of hills^ canon of the Rio Grande, below Mt, Carmel, October ; Parry. 

 Mountain near the Limpia, western Texas ; Wright. Stem 12-18 inches long, the upper 

 branches somewhat twining. Leaves 4-6 lines long, deltoid or sometimes hastate-cordate, 



rather acute, mucronate ; petioles half as long as the lamina. Flowers on short axillary 



pedicels. 



(b 



lobes trian- 



gular-ovate. Stamineal crown S-lobed, the lobes obtuse or slightly emarginate, concave, with 

 a prominent ridge on the inside. Stigma obtusely 5-angled, flat. Pods 3| inches long, tapering 

 to a long slender point. 



OLEACE.E. 



Mexico 



FKAXiNUSPiSTACiyEFOLiA, TorT, 171 Bot, WMppl. jBep.^. 128. F. veluLinaj^on 

 149. On the Rio Grande and its tributaries. Near the Copper Mines, New 

 (No. 161fr, Wright.) Ojito, Mexico; Gregg. Sonora ; Schott. A downy variety, with narrowly 

 lanceolate attenuate leaves, was found by Mr. Thurber at Guadalupe Canon, Chihuahua. This 

 species often grows from 15-20 feet high. Sometimes it attains the height of 30 feet. The fruit 

 is olten 3-winged* 



Fraxixus cuspid ATA (n. sp.) 

 datis serratis vel integerrimis 



obtusis. Eagle Mountains ai 



Can 



(N 



i 



I 



Fraxinus Scheideana, ScMicht, & Cham, in Linncea^ 6,^. 391 ; DQ. Prodr. 8, |>, 278. Var. 



PARViFOLiA : foliolis l-3jugis vix uncialibus. Rocky places in limestone districts on the Rio 

 Grande, from the San Pedro to the Pecos; Schoit. Mountains of Santa Rosa, Cohahuila ; 



BigeloiOy Parry, A graceful shrub 5 or 6 feet high. 



Fraxinus viRiDis, Michx.f. Sylv. 2, p. 197, t. 120. Var. Berlandieriana. F. Berlandieriana, 

 DC. L o. Near Eagle Pass on the Rio Grande; Bigelow. (No. 602 and 2112, Berlandler. 

 No. 653 (Coll. 1846) and No. 41, (Coll. 1847,) Lindheimer.) Leaflets 5-7, or often 3, mostly 

 cuneate at the base, shining on the upper surface ; the teeth larger and more salient than in the | 



F. viridis of the Middle States ; the fruit also is more acute. 



F. vehUina, Torr. in Emory, Pep, p. 



