OF ARTS AND SCIENCES. 341 



acuminate teeth as long as the tube ; corolla rose-color, 3 lines long. — 

 In the Sierra Madre, forty miles south of Saltillo (211). Allied to 

 D. Greggii. 



Dalka roLYCKPiiALA, Benth. In the same locality (208), also in 

 the Escobrillos and San Rafael Mountains, San Luis Potosi (786 and 

 787 Schaffner) ; IGO Parry & Palmer. 



Dalea Wkigiitii, Gray. In the Caracol Mountains, Coahuila 

 (229) ; 1G2 Parry & Palmer. 



Dalea Luisana. Perennial, herbaceous, the slender sparingly 

 branched stems decumbent or ascending (2 to G inches long), covered 

 throughout with an appressed silky pubescence : leaves few, trifolio- 

 late : leaflets about equalling the petioles, linear-oblong, obtuse or 

 acutish, glabrous above or nearly so, 3 to 9 lines long by 1 or 1 1 

 wide: flowers in close sessile heads (the rhachis at length 3 to 9 lines 

 long) ; bracts silky, ovate, acuminate, equalling the very villous calyx : 

 calyx-teeth filiform, bearded, exceeding the tube and equalling the 

 yellow corolla (2 or nearly 3 lines long). — In the San Miguelito 

 Mountains (808 Schaffner) ; it is also 164 Parry & Palmer, referred 

 to D. Wrightii. 



Dalea Greggii, Gray. At Monterey, Nuevo Leon (213); 147, 

 152 Parry & Palmer, and 1048, in part. 148 Parry & Palmer, with 

 a part of 1048, referred to D. pulchella, is some other unrecognized 

 species. 



Dalea mollis, Benth. In the mountains north of Monclova 

 (215); 161 Parry & Palmer. 



Dalea frutescens, Gray. In Wilson County, Texas (207), in 

 the Sierra Madre, south of Saltillo (206), and at Juraz, Coahuila 

 (205), ard at Monterey, Nuevo Leon (212). Also a variety with 

 elongated loosely flowered spikes, the calyx slightly more pubescent, 

 and the larger petals 4 to 6 lines long, changing from creamy white to 

 pale rose-color; in the Caracol Mountains, Coahuila (210). 



Dalea radio ans. Frutescent, glabrous, much branched, the 

 slender stems short and erect or elongated and trailing and occasion- 

 ally rooting: leaves half an inch long or less, the leaflets (6 to 9 pairs) 

 very narrowly linear, obtuse, 1 or 2 lines long: spike nearly sessile, 

 open, few- (rarely 10-) flowered: calyx as in D. frutescens, villous in 

 the throat, but the triangular teeth longer and more acuminate, half 

 the length of the tube ; corolla 3 lines long, magenta. — In the Sierra 

 Madre, south of Saltillo (214). Nearly allied to D. frutescens. 



Petal OSTEMON obovatus, Torr. & Gray. Neai' San Antonio, 

 Texas (230). 



