186 Plante Lindheimeriane. 
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- 
trata, C. orientalis, and some other oriental species. 
389. P. rivunaris, Scheele in Linnea 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. Ro- 
mer, is probably the same species. 
+ Cerasus serotina, DC.; Torr. & Gray, Fl. 1. p. 410. 
On the Pierdenales. April, in flower. A tree or alarge shrub. 
(608.) Rosa routoLosa, Nutt. in Torr. & Gray, £1. 1. p. 
460. Hills of the Sabinas and Three Creeks. May.— 
Stems less than a foot high, from a creeping rootstock. 
« Flower very fragrant.” 
+ Crarmcus coccinea var.? mouuis, Torr. & Gray, Fl. 1 
p- 465. C. mollis, Scheele in Linnea, 21. p. 569. Muskit 
flats near San Antonio. March, in flower.—lIf this be 
admitted to rank as a species, it must bear, I believe, the 
name of C. subvillosa, Schrad. 
