Image: Shortleaf foliage drawing

Description: From "The Timber Pines of the southern US". Explanation of Plate XV: Fig. a, branch from lower limb bearing male inflorescence with flowers in a dense cluster (first week of April, southern Alabama); b, c, branch with two subterminal aments of female flowers below which are two female cones of one season's growth; d, detached male flower showing basal involucral scales, magnified 3 diameters; e, germinating seed (February); f, same seedling one month later (March) with 7 cotyledons in the midst of which the terminal bud shows the primary leaves appearing; g, seedling about the close of the first season with terminal cluster of true (secondary) leaves, below which are seen the withered primary leaves; h, i, transverse section through base of two and three leafed leaf bundle, magnified 50 diameters, showing outer small hypodermal cells, the stomata appearing as marginal white spots; next a broad band of large in-walled parenchymatous cells bearing chlorophyll, within which, at the angles of the leaf, resin ducts appear as large openings; the dark areas in the center are fibro-vascular bundles surrounded by a single row of thin-walled cells (bundle sheath).
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