358 PROCEEDINGS OF THE AMERICAN ACADEMY 



Gaura Drummondii, Torr. & Gray. At Laredo, Texas (348). 



Gaura coccinea, Nutt. About San Luis Potosi (171 Schaffner) ; 

 a narrow-leaved and a broader-leaved form, the same as 254 and 255 

 Parry & Palmer. 



Stenosiphon virgatus, Spach. At Sutherland Springs (349). 



Cevallia sinuata, Lag. At Uvalde, Texas, and at Saltillo, spar- 

 ingly ; at Parras, Coahuila (360), at Monterey, Nuevo Leon (361), 

 and at San Lorenzo de Laguna a form with broader sinuately toothed 

 leaves (362) ; 258 Parry & Palmer. 



Petalonyx crenatus, Gray, in herb. SufFruticose, low, the 

 short herbaceous branchlets leafy and densely retrorse-hispid: leaves 

 oblong-lanceolate, sessile, 2 to 4 lines long, densely covered with short 

 barbed hairs, the crenate margins revolute : flowers white, in open 

 terminal naked racemes, each flower involucrate with three unequal 

 toothed bractlets at the summit of the short slender pedicel : calyx- 

 lobes linear, hispid, recurved ; petals narrowly linear, not connivent, 

 2 lines long : filaments and style a half longer. — At San Lorenzo de 

 Laguna, Coahuila (833). 



EucNiDE LOBATA, Gray. At Monterey, Nuevo Leon (356). 

 This species has the leaves rather strongly lobed, with acute or 

 acutish teeth, the inflorescence short (2 or 3 inches or less) with 

 leaf-like toothed bracts, the calyx-lobes about 2 lines long, stamens 

 about 60, and the oblong-ovate capsule narrowed at base. 1067 

 Parry & Palmer is ajjparently distinct, the scant specimen in the 

 Gray herbarium showing a very short campanulate calyx and few (25 

 or less) stamens. The genus is clearly distinct from Mentzelia. 



EuCNiDE FLORiBUNDA. Stout, a foot high or more, the round- 

 cordate leaves (H to 2| inches long) slightly lobed and bluntly sinu- 

 ate-toothed : inflorescence 6 to 8 inches long, with lanceolate entire 

 bracts acute at each end : calyx-lobes 3 or 4 lines long, nearly equal- 

 ling the petals: stamens very numerous (100 or more): capsule 

 broadly campanulate, rounded at base. — At San Lorenzo de Laguna 

 (832). Resembling E. lohata. 



EucNiDE BARTONioiDES, Zucc. At Guajuco, Nucvo Leon (354), 

 and at Monclova, Coahuila (355), growing on rocks at the mouth of 

 caves. The calyx-tube in this species is villous, with the barbed 

 pubescence very short or usually wanting, the lobes 3 to 8 lines 

 long. Edcnide sinuata,. collected by Botteri (266, in herb. Gray, 

 without locality), is very similar, but with the leaves sinuately lobed, 

 the obtuse lobes entire or sparingly toothed: calyx tube densely 

 covered with barbed hairs, the villous lobes 3 or 4 lines long. 



