. Bulletin. Agriculture -- New Hampshire. 114 PRUSSIC ACID IN WILD CHERRY LEAVES \ ^^. Fig. I.—Leaf of Wild Red Cherry. Full size. red cherry, " pigeon cherry," known botanically as Prmius Pennsylvanica. This is a shrub, often growing to a small tree, to be recognized by its light, reddish brown bark and waxy, glossy leaves, which are green on both sides, oblong lanceolate in shape, possessing an irregular and sharply serrate Qi\%Q^ the teeth of which are very small and short. (Fig. i.) The second species, Prunus Vir- glniana^ commonly known as the choke cherry, is more common than t
. Bulletin. Agriculture -- New Hampshire. 114 PRUSSIC ACID IN WILD CHERRY LEAVES \ ^^. Fig. I.—Leaf of Wild Red Cherry. Full size. red cherry, " pigeon cherry," known botanically as Prmius Pennsylvanica. This is a shrub, often growing to a small tree, to be recognized by its light, reddish brown bark and waxy, glossy leaves, which are green on both sides, oblong lanceolate in shape, possessing an irregular and sharply serrate Qi\%Q^ the teeth of which are very small and short. (Fig. i.) The second species, Prunus Vir- glniana^ commonly known as the choke cherry, is more common than the preceding and its leaves are more poisonous. Like the next species, it is to be found as a constituent of the average roadside thicket throughout New England. It is described by Grav as follows: "Tall shrub, or small tree, greyish bark, oval-oblong or obovate and abruptly pointed thin leaves, very sharply serrate with slender projecting teeth (Fig, 2.) ; flowers in shorter and closer racemes (than P. seroiind) in spring; the fruit ripe in summer, red turning dark crimson, astrin- gent, but eatable when fully ; It is a noteworthy fact, serviceable as a means of identification, that this variety is usually more or less affected by black knot, which is never to be found upon the two other species. By far the most dangerous variety occurring in New Eng- land is the wild black cherry, Prtmus serotlna^ thus des- cribed by Gray : " Tree or shrub, westward becoming a good sized forest tree, with bitter aromatic bark, close-grained reddish wood, valued by the cabinet maker; oblong or lance-oblong leaves, thickish or firm texture, usually taper pointed, serrate, with incurved short callous teeth ; flowers in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New Hampshire Agricultural Experiment
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