. Foundations of botany. Botany; Botany. STEMS 79. however, a^ good many cases in which the stem takes on a more strikingly leaf-like form. The common asparagus sends up in spring shoots that bear large scales which are really reduced leaves. Later in the season, what seem like thread-like leaves cover the much-branched mature plant, but these green threads are actually mi- nute branches, Ke. 47.—Bulb of Hyacinth. which perform (Exterior -view and split lengthwise.) ^Jje WOrk of leaves (Fig. 50). The familiar greenhouse climber, wrongly known as smilax (properly called Myrsiphyllum), bears a p
. Foundations of botany. Botany; Botany. STEMS 79. however, a^ good many cases in which the stem takes on a more strikingly leaf-like form. The common asparagus sends up in spring shoots that bear large scales which are really reduced leaves. Later in the season, what seem like thread-like leaves cover the much-branched mature plant, but these green threads are actually mi- nute branches, Ke. 47.—Bulb of Hyacinth. which perform (Exterior -view and split lengthwise.) ^Jje WOrk of leaves (Fig. 50). The familiar greenhouse climber, wrongly known as smilax (properly called Myrsiphyllum), bears a profusion of what appear to be deKcate green leaves (Fig. 51). Close study, however, shows that these are really short, flattened branches, and that each little branch springs from the axil of a true leaf, I, in the form of a minute scale. Sometimes a flower and a leaf-like branch spring from the axil of the same scale. ' Branches which, like those of Myrsi- phyllum, so closely resemble leaves as to be almost indistinguishable from them are called ciadophylts. 94. Modifiability of the Stem.—The stem may, as in the tallest trees, in the great lianas of South American forests. sea Flo. 48.—Longitu- dinal Se&tiou of an Onion Leaf. aca, thickened base of leaf, forming a bulb-scale; sheath of leaf; bl, blade of the leaf; intt hollow inte- rior of 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; Eastwood, Alice, 1859-1953. Boston, Ginn & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
