. Concord area trees and shrubs. Botany; Trees; Shrubs. SHRUBS ALTERNATE SIMPLE LEAVES HAVfTHORNS: Thorny with thorns mostly unbranched and MOSTLY LONGER THAN 2 CM. LEAVES TOOTHED OR LOBED. Reliable identification in this group may require examination of flowers. Leaf shapes may vary considerably on the same plant. Leaf characters used below apply primarily to mature leaves of fruiting branchlets. For problem specimens consult the illustrations and key in Seymour's Flora of New England. Hawthorns in our area are found in old pastures, thickets, borders of woods and occasionally in woods. The f
. Concord area trees and shrubs. Botany; Trees; Shrubs. SHRUBS ALTERNATE SIMPLE LEAVES HAVfTHORNS: Thorny with thorns mostly unbranched and MOSTLY LONGER THAN 2 CM. LEAVES TOOTHED OR LOBED. Reliable identification in this group may require examination of flowers. Leaf shapes may vary considerably on the same plant. Leaf characters used below apply primarily to mature leaves of fruiting branchlets. For problem specimens consult the illustrations and key in Seymour's Flora of New England. Hawthorns in our area are found in old pastures, thickets, borders of woods and occasionally in woods. The fruits of some species are palatable and sometimes used for making jellies. COCKSPUR THORN Crataegus crus-galli Leaf base narrow. Leaves essentially unlobed, mostly less than 3 cm. wide, glossy above. Fruit with 1-3 nutlets. Calyx lobes untoothed. Usually a tree. Uncommon. LONG-SPINED THORN Crataegus macracantha (or C. succulenta var. macracantha) Leaf base narrowed. Leaves sometimes with small lobes, mostly wider than 3 cm., often glossy above. Fruit with 2-3 nutlets. Calyx lobes toothed. Sometimes a small tree. Uncommon. ROUNDLEAF THORN Crataegus chrysocarpa including C. dodgei Leaves wedge-based, distinctly lobed, sometimes nearly circular in shape. Leafstalks glandular only near leaf base. Flowerstalks hairy. Flower clusters with conspicuously glandular bracts at first. Stamens with white or yellow heads. Calyx lobes toothed. Sometimes a tree. (PRINTS FULL SIZE) COCKSPUR THORN. 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 Angelo, Ray, 1948-; Angelo, Ray, 1948-. Cambridge, Mass. : Concord Field Station, Museum of Comparative Zoology, Harvard University
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Keywords: ., bookcentury1900, booksubjec, booksubjectbotany, booksubjectshrubs
