NATIVE AMERICAN SPECIES OF PRUNUS. 37 
wild state, yet a study of several of the varieties referred to this 
group by pomologists reveals no botanical character of consequence. 
The suggestion sometimes made that these varieties are hybrids of 
Prunus hortulana with P. americana is without foundation and has 
probably arisen from a misunderstanding of the specific differences. 
While Prunus hortulana is one of the most recent to receive botan- 
ical recognition, this form of the species enjoys the distinction of 
being apparently the first in which a horticultural variety has been 
given a name in a publication. This naming of a variety is a note- 
worthy event in the development of American plums, and what is 
known concerning the history of this variety has been related earlier 
in this discussion. If Dodd, who is credited as being the one who 
planted seed from which the Miner came, really had two lots of plum 
seeds, as may perhaps be inferred from Mr. Giddings’s account pre- 
viously quoted, it is not clear which was the origin of the Miner or 
whether it was the one obtained from the Horseshoe Bend of Talla- 
poosa River. This locality is in the northern part of Tallapoosa 
County, Ala., and is about 150 miles south of the known range of the 
species. | 
Prunus HortuLana MINERI HYBRIDS. 
The minert form of Prunus hortulana is supposed to have been 
hybridized with Prunus americana (Pl. XIII, fig. 6, Surprise; figs. 
7,8, Hammer), P. munsomana, and P. pumila. 
PRUNUS REVERCHONH Sargent. 
(Hog plum.) 
Prunus reverchonti Sarg., 1911, Trees and Shrubs, v. 2, pt. 3, p. 158. 
Prunus pygma Munson, 1889, in Amer. Gard. v. 10, no. 5, p. 175. (Not P. 
pygmaea Willd., 1796.) 
Leaves lanceolate to ovate-lanceolate and acuminate (PI. ITI, fig. 
2), usually strongly conduplicate or troughlike and folding at the 
base when pressed, mostly 5 to 7 em. long, 2 to 3.5 cm. broad, or 
those of the young shoots sometimes 9.5 em. long and 4.5 cm. broad, 
rounded or narrowed at the base and acute at the apex, the margin 
glandular serrate, in age the glands appearing as callous points or 
faling away and leaving the serrations rounded, green and glabrous 
above, pale green and pubescent with scattered hairs below, or 
sometimes rather. densely pubescent when young, the pubescence 
sometimes slightly tufted in the axils of the lateral veins; petioles 7 
to 12 mm. long, slightly pubescent along the upper surface and usu- 
ally with two to four glands near the apex; stipules linear, glandular 
along the margin. Flowers appearing from the last of March to the 
middle of April, with or before the leaves, in umbels of 2 to 4 or 
rarely more, about 10 mm. broad; pedicels 6 to 9 mm. long, glabrous; 
