. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. ROSACEAE—PYRUS 513. Fig. 274. Iowa Crab (Pyrus ioensis). 1. Flowering branch. 2, I^ongitudinal section of flower with petals removed, natural size. 3. Fruiting branch. 4. Longitudinal section of fruit. 5. Summer branch. 1, 3, 4, 5, one-half natural size. (M. M. Cheney). Crataegus L. Hawthorn. White Thorn Shrubs or small trees, usually spiny; leaves petioled; flowers in corymbose clusters, white or pink; calyx-tube urn-shaped; limb 5-
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. ROSACEAE—PYRUS 513. Fig. 274. Iowa Crab (Pyrus ioensis). 1. Flowering branch. 2, I^ongitudinal section of flower with petals removed, natural size. 3. Fruiting branch. 4. Longitudinal section of fruit. 5. Summer branch. 1, 3, 4, 5, one-half natural size. (M. M. Cheney). Crataegus L. Hawthorn. White Thorn Shrubs or small trees, usually spiny; leaves petioled; flowers in corymbose clusters, white or pink; calyx-tube urn-shaped; limb 5-cleft; petals 5, roundish; stamens numerous or few; styles 1-S; fruit a pome, containing 1-5 bony, 1-seed- ed stones. About 75 species, although the number is sometimes estimated as high as 125. Some species, like C. punctata, and C. mollis, are ornamental. Crataegus mollis Scheele Shrub or small tree; shoots densely pubescent; leaves large, slender-petioled, cuneate, truncate or cordate at base, usually with acute lobes; more or less densely pubescent beneath; flowers large, 1 inch across; fruit bright scarlet with a light 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 Pammel, L. H. (Louis Hermann), 1862-1931. Cedar Rapids, Ia. , The Torch Press
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