. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada. Botany; Botany; Botany. 126 THE CRYPTOGAMIA OB FLOWERLESS 511, Chara fcetida. 612, Portion of a brand) ; the two reproductive) organs- a. Globule: b, nucule. 627. Tiiallus. The bearing slender, whorled, leafless branches. The mosses and Hepatiea3 have filiform stems and \ A^ll ^^SX-' 6 branches, erect and creeping. Fern leaves and V \!w i ^( mushrooms arise on stipes. 626. Leaves. The ferns are characterized by their great developmen
. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada. Botany; Botany; Botany. 126 THE CRYPTOGAMIA OB FLOWERLESS 511, Chara fcetida. 612, Portion of a brand) ; the two reproductive) organs- a. Globule: b, nucule. 627. Tiiallus. The bearing slender, whorled, leafless branches. The mosses and Hepatiea3 have filiform stems and \ A^ll ^^SX-' 6 branches, erect and creeping. Fern leaves and V \!w i ^( mushrooms arise on stipes. 626. Leaves. The ferns are characterized by their great development of leaves called fronds. They are rarely simple, often pinnatifid, or pin- nate, simply, doubly or triply. Their venation is fork-veined and their vernation cireinate. The leaves of the mosses and Hepatiese are vciniess and delicate, mostly ovate and entire, numerously covering the axis. Those of the latter are often garnished with stipule-like processes called am- phigastria. vegetative svstern of the Thallogens consists cither of delicate filaments or of flattened membranes, varying in color through every shade and hue. In Marehantia, lichens, and seaweeds it is green, olive or red, and called thallus. It may resemble a leaf or a stem, but its functions are. still the same. In size it varies from the microscopic Confervse to the gigantic seawrack, a fur- long in length. Its structure is purely cellular and uniform, or, as in Marehantia, in layers. 628. Mycelium or spawn is the vegetative system of the Fungi, distinguished from thalli by its want of coloring matter in its cells. It consists of meshes of white or colorless filaments, branching and anas- tamosing to form entangled masses pervading the substance in which the Fungus grows. It is far less conspicuous than the fructification (toad-stool, etc.) which ultimately arises from it. 629. The reproductive organs of the Cryptogamia are the anthe- ridia and archegonia; and by their reaction spores in various spore- vessels
Size: 1155px × 2165px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectbotany, bookyear1861
