no PITTONTA. 



lectecl at Bowie, Arizona, 1884, by Marcus E. Jones. Dis- 

 tributed uu Jer the No. -I:247j and over tlie label '' E. deniata ? '\ 



{ § PoinseUia, ) 



E. DENTATA, va)\ GUACILLIMA- Strictlv erect (1| — 3 dm, 

 high) ; stem slender, simple (in one case branched in the 

 middle, but by apparent abortion), very finely appressed- 

 tomentose ; internodes 3—4 (4i — 11 cm. long). Lower leaver 

 ovate, irregularly crenate-dentate (1| cm. long, | cm. wide), 

 middle leaves ovafce-lauceolate, acutely irregular dentate (2—3 

 cm. long, \ — 1 cm. broad), with scattered bristly hairs 

 beneath ; upper leaves similar but larger ; petioles usually 

 half the length of the blade. Seeds thickly and sharply 

 tuberculate, including the sarcous caruncle. Collected at 

 Bowie, Arizona, by Marcus E- Jones, 1884. 



( § TiTHYMALUS. ) 



r 



E. ExmUA, Linn. Fountl growing spontaneously by B. F. 

 Leeds, in his garden in Santa Clara, Calif., and supposed by 

 him to have sprung from seeds mixed with a purchase of 

 garden seeds from some eastern (U. S.) dealer. 



Cboton. 



C. SoNOiLE, Torr. (Bot. Mex. Bound. Surv. 2. p. 194). Speci- 

 mens collected by J. Reverchon, upon the rocky bluffs of the 

 upper Llano, Toxas (Ko. 1595) ; differing in no way from the 

 description of the type. Collected by Schott, at Sierra de 

 Najos. The discovery of this species in Texas is of special 

 interest, as Miiller places it among the " Species duhim Ameri- 

 ^nncp'' in De Candolle's Prodronnis. (See pars xv. p. 695). 



