. Elements of botany. Botany; Botany. STEMS. 49. least possible surface is presented by a plant of given bulk, — that is, in the form of a sphere or an egg-shaped mass. This, above ground, corresponds to the corm or solid bulb of the crocus and the Indian turnip among underground stems. Other cactuses are more or less cylindrical or 9 prismatic, others still con- sist of flattened joints, but all agree in offering much less surface to the sun and air than is exposed by an ordinary leafy plant. 73. Leaf-like Stems. — The flattened stems of some kinds of cactus are suffi- ciently like fleshy lea
. Elements of botany. Botany; Botany. STEMS. 49. least possible surface is presented by a plant of given bulk, — that is, in the form of a sphere or an egg-shaped mass. This, above ground, corresponds to the corm or solid bulb of the crocus and the Indian turnip among underground stems. Other cactuses are more or less cylindrical or 9 prismatic, others still con- sist of flattened joints, but all agree in offering much less surface to the sun and air than is exposed by an ordinary leafy plant. 73. Leaf-like Stems. — The flattened stems of some kinds of cactus are suffi- ciently like fleshy leaves to pass for leaves among people who are not botanists, but there are a good many cases in which the stem takes on a strikingly leaf-like form. The common asparagus sends up in spring shoots that bear large scales which are really reduced leaves. Later in the seas,on, what seem like thread-like leaves cover the much- branched mature plant, but these green threads are actually ,Biiibof Hyacintii. n, the minute branches, which per- same split lengthwise. Fig. 35.—a Six-weeks'-old Potato Plant grown from the Seed. a, 6, upper branches, out off; d, cotyledons ; e, underground stems, springing from buds in the axils of the cotyledons ; /, g, tubers developed from ends of underground stems or from axils of scales borne upon them ; h, 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896
