Dieser Lehrtext erklärt den Wachstumsprozess von Pflanzen, insbesondere Monokotyledonen, zu denen Arten wie Arums, Trillium und Greenbrier gehören. Diese Pflanzen weisen parallele Blätter und Stammstrukturen auf, die keine Jahreswachstumsringe aufweisen, was sie von Dikotyledonen unterscheidet.
1977 x 1263 px | 33,5 x 21,4 cm | 13,2 x 8,4 inches | 150dpi
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. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Botany. POPULAR FLORA. 203 CLASS II. —ENDOGENS OR MONOCOTYLEDONS. Stem having the wood in threads or bundles, interspersed among the pith or cellular part, not forming a ring or layer, and not increasing by annual layers. Leaves parallel-veined, not branching and forming meshes of netvi^ork. To this some Arums, Trillium, Greenbrier, &c. are exceptions, having more or less netted veins.. 500 Entlojenoiis stem nCone year old, shown in a Corn-stalk. S"! One oT several veara old. of Palmetto. Parallel-veinerl leaves of the two kinds: 502 Ihnt of Lily of the Valley ; 503. one of^Calla 504. Majnifiea section of the seed of Iris, showing the small monocotyledonuus embryo. 505. Flanllet of Iria growinir from the seed. • = .< / 6 5 Flowers with their parts mostly three or six, never five. Embryo monocotyledonous, i. e. of only one true seed-leaf: so in germination the leaves are all alternate or one above another. Except the Palmetto and one or two Yuccas at the South (Fig. 79), and some Greenbriers, all the Endogens of this country are herbs. ^"^ In warmer climates there are many Palms and other woody plants of the class, all having an appearance very different from our common trees and shrubs (113, 114). 14. 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 work.. Gray, Asa, 1810-1888. New York, Ivison & Phinney
