OP ARTS AND SCIENCES. 157 



PoPDLUS Fremonti, Watson, var. (?) Wislizeni, "Watson. In 

 cultivated places about San Luis Potosi (891 SchafFiier) ; S4'3 Parry 

 & Palmer. One of the several forms that are provisionally referred 

 to this species. 



Ceratopiiyllum demersum, Linn. At San Lorenzo de Laguna, 

 Coahuila(1287). 



Ephedra pedunculata, Engelm. Ms. A strongly marked and 

 very distinct species, the slender elongated stems 6 to 10 feet long and 

 climbing over surrounding bushes: leaves and fruit-scales in pairs, the 

 latter more or less connate and becoming at length fleshy and forming 

 a red edible pedunculate fruit: seed in pairs: anthers 5 to 7, stipitate. 

 — At Uvalde, Texas (1291), at Saltillo (1289) and Juraz, Coahuila 

 (1290), and at San Luis Potosi (Schafifner) ; 805 Parry & Palmer. 



Ephedra antisypiiilitica, Meyer. At Sutherland S[)rings, 

 Texas (1292). This species has been variously confused with the last 

 and with B. Nevadensis, owing to the very imperfect state of Berlan- 

 dier's original specimens and the difficulty of finding characters by 

 which to identify them. An examination of the single spike (stami- 

 nate) on his specimens in the Gray herbarium shows satisfactorily that 

 they are distinct from E. pedunculata, while the locality in which they 

 were found (McMuIlen County, Texas) makes it certain that they 

 cannot be the same as E. Nevadensis, which is not known to occur 

 either in Texas or New Mexico. The common species of Western 

 Texa«, with which it may be considered as identical, is a rather stout 

 and rigid bush, with opposite leaves and scales, the latter more or less 

 connate but becoming less fleshy than in the last, and the spike more 

 shortly pedunculate or subsessile : seed solitary : anthers 4 or 5, 

 sessile. 



Ephedra aspera, Engelm. Ms. Distinguished from the last by 

 the very rough branches, the fruit-scales all distinct and probably not 

 becoming fleshy, and the seed in pairs. — In the Siei'ra Madre, south 

 of Saltillo, Coahuila (1288). Collected also by Gregg (53) west of 

 Cartamullo. 



Cupressus Arizoxica, Greene. In the Sierra Madre, south of 

 Saltillo (1293). 848 Parry & Palmer appears to be the same, but 

 with more prominent and curved bosses upon the cones, as in C. Ben- 

 thami, from whicli it diifers only in its more glaucous foliage. It is 

 doubtful whether the two species are distinct. 



Cupressus Benthami, Endl. Staminate specimens from the same 

 region (1294), referred by Ilemsley to Juniperus Jlaccida, but agreeing 

 in every respect with this species. 



