Tas. 8486. 
PRUNUS PENNSYLVANICA. 
North America. 
RosacEak. Tribe PRUNEAE. 
Prunus, Linn.; Benth. et Hook. f. Gen. Plant. vol. i. p. 610. 
Prunus (Cerasus) pennsylvanica, Jinn. f. Suppl. p. 252; Sargent, Silva of 
N. Amer. vol. iv. t. 156; C. K. Schneider, Laubholzk. vol. i. p. 618; species 
P. emarginatae, Walp., proxime affinis sed foliis glabrescentibus saepe 
m y doe semper acuminatis haud obovatis obtusis, fructu minore laete rubro 
ie iffert. 
Arbor decidua, 9-12-metralis, truncus 4°5 dm. diametro; ramuli glabri, 
rubidi; cortex amarissima. Folia petiolata, ovata vel ovato-lanceolata, 
raro obovata, acuminata, basi rotundata vel late cuneata, margine minute 
irregulariter serrata, dentibus incurvis apice glandulosis, 75-10 cm. longa, 
2-5-4 cm. lata, laete viridia, primum puberula, cito glabra; petiolus 
gracilis, 1-2-2 cm. longus versus apicem 1-3-glandulosus; stipulae 
minutae, margine glandulosae. ores albi, sub vere aperti, 1°2 cm. 
lati, in vestigiis annotinis fasciculatim vel subumbellatim congesti, 
glomeruli 4-6- raro pluri-flori; pedicelli graciles, glabri, 2-2°5 cm. longi. 
Calyx glaber, 5-lobus; tubus infundibuliformis; lobi obtusi, tubo sub- 
aequilongi. Petala 5, subrotundata, extra versus basin pubescentia. 
Fructus globosus, 6 mm. diametiens, maturitate laete ruber ; endocarpium 
compressum, ovoideum.—Cerasus borealis, Mich. Fl. Bor, Amer. vol. i. 
p. 286. C. persicifolia, Loisel. in Nouv. Duham. vol. v. p. 9.—W. J. Bean. 
Though introduced, according to Aiton, in 1773, the 
Cherry which forms the subject of our illustration has 
never been common in this country. As long after its 
introduction as 1842, it appears to have been unknown, in 
the living state, to Loudon. It is nevertheless a handsome, 
free-flowering species, as is shown by our plate, prepared 
from material gathered from a small tree presented to Kew 
by the Arnold Arboretum in 1910. It is worthy of a place 
in thin woodland where our native P. avium and P. Padus 
succeed. One of the most widely spread of North American 
trees, P. pennsylvanica extends from Newfoundland and the 
shores of Hudson’s Bay in the north, to North Carolina and 
Tennessee in the south, and westward to the inland slopes 
of the Rocky Mountains. Its nearest ally is P. emarginata, 
-Walp., another red-fruited Cherry, which is, however, a 
purely western species, confined to the area from California 
to British Columbia, and is distinguished from the species 
Maron, 1913. 
