186 Plantce Lindheimer ian<z. 



or three circles, the innermost partially abortive." Engelm. — 

 Closely allied to the Amygdalus microphylla, H. B. K., and 

 very likely to prove a variety of it, judging from the fragment 

 of that plant which I possess from Schlechtendal. These, 

 with P. glandulosa, belong to the subgenus Microcerasus, 

 Webb, characterized by Spach in Ann. Sci. Nat. 2. Ser. 19. p. 

 125; a group "intermediate between the true Cerasi and 

 Prunus [but referred by these authors to the former] and also 

 nearly allied to some Amygdali." It embraces Cerasus pros- 

 tata, C. orientalis, and some other oriental species. 



389. P. rivularis, Scheele in Linncea 21. p. 594. P. 

 Tawakonia, Lindheimer, Mss. (which name was doubtless 

 appended to the specimen received by Scheele.) Banks of 

 streams and margins of bottom-woods, forming thickets near 

 the water, rarely on higher places, Upper Guadaloupe, and 

 between Comale Creek and the Colorado. March, in flower; 

 June, in fruit. " Shrub from two to six feet high. Fruit 

 ripe in June, of the size of a cherry, or a little larger, acidu- 

 lated, cherry-red. The Tawakony Indians boil them and eat 

 them with honey. Called Tawakony Plum.'''' Lindheimer. — 

 The same plant extends northward into Missouri, and passes, 

 if I mistake not, into an evident form of Prunus Americana, 



or P. nigra, if the two species are to be distinguished. P. 



Texana, Scheele, I. c. gathered at New Braunfels, by Mr. R6- 



mer, is probably the same species. 



| Cerasus serotina, DC; Torr. 8f Gray, Fl. 1. p. 410. 



On the Pierdenales. April, in flower. A tree or a large shrub. 

 (608.) Rosa foliolosa, Nutt. in Torr. fy Gray, Fl. 1. p. 



460. Hills of the Sabinas and Three Creeks. May. — 



Stems less than a foot high, from a creeping rootstock. 



" Flower very fragrant." 



f Cratjegus coccinea var. ? mollis, Torr. &f Gray, Fl. 1. 



p. 465. C. mollis, Scheele in Linncea, 21. p. 569. Muskit 



flats near San Antonio. March, in flower. — If this be 



admitted to rank as a species, it must bear, I believe, the 



name of C. subvillosa, Schrad. 



