NATIVE AMERICAN SPECIES OF PRUNUS. 39 
produced fruit identical in color with the variety Golden Beauty of 
Prunus hortulana. 'This fruit was of good quality and was remark- 
able in having the smallest stone of any specimen found, being about 
9by 6 by 5mm. ‘The stone is slightly less pomted than usual, but 
no other distinguishing differences were found. The species is used 
locally in Texas for jellies and preserves. 
Prunus REvERcHONID HYBRID. 
A form found near Henrietta, Tex., and referred to under Prunus 
mexicana, is apparently ahybrid. It may be characterized as follows: 
Leaves ovate or sometimes nearly oval and acuminate, mostly 4.5 to 
7 cm. long, 2.5 to 3.5 em. broad, gradually narrowed at the base, 
acuminate toward the apex, sometimes abruptly so, dull green and 
glabrous or nearly so above, pale and sparingly soft-pubescent 
below, the margins serrate, the serrations acute or often somewhat 
obtuse, sometimes glandular, at least when young; petioles 7 to 10 
mm. long, hairy, and usually with one or more glands toward the 
apex. Flowers appearing before the leaves, about 12 mm. broad, 
in umbels ot 2 to 4, umbels short stalked, the stalk sometimes 3 mm. 
long; pedicels slender and glabrous, 8 to 10 mm. long; calyx rather 
narrowly campanulate, glabrous or sparingly and obscurely pubescent, 
the tube about 3 mm. long, the lobes ovate, 2 mm. long, glandular, 
and hairy within; petals oblong-orbicular and narrowed to a claw, 
about 5 mm. long. 
The hybrid is a small tree with the young twigs chestnut colored, 
later becoming grayish; lenticels oval, not very prominent, and the 
branches apparently without thorns. In texture of leaf it resembles 
Prunus mexicana, but the shape of the leaf suggests that of P. rever- 
chonii, and it resembles the latter also in the size of flowers and in its 
calyx characters. One form, apparently a hybrid, also originating 
near Henrietta, was for a time under cultivation in the nursery of 
A. M. Ramsey, at Austin, Tex., and by some other firms under the 
name of Ward’s October Red. Mr. Ramsey grew a number of seed- 
lings and these showed great variation; none of them, however, pro- 
duced fruit of merit, and the trees were destroyed in 1910. 
Prunus Rivuvaris Scheele. 
(Creek plum.) 
Prunus rivularis Scheele, 1848, in Linnea, Bd. 21, Heft 5, p. 594. 
Prunus tecana Scheele, 1848, in Linnea, Bd. 21, Heft 5, p. 593. (Not Dietrich, 
1843.) 
Leaves ovate to oblong-ovate (PI. ITI, fig. 3) or sometimes slightly 
obovate, rounded at the base, usually short acuminate, 6 to 7.5 cm. 
long, 2 to 4 cm. broad, usually not folding at the base when 
