. Class-livre de botanique : être présente de la structure, la physiologie et la classification des végétaux ; avec une flore des États-Unis et du Canada . La botanique, la botanique, la botanique. Le CBYPTOGAMIA FLOWERLESS OB 126 plantes.. 511, foetiiln Chara. 513, partie d'un br;iDcli deux organes de reproduction ; tlia- il, Globule ; &AMP ;, nacule. mince, portant des branches sans feuilles, verticillées. Les mousses et HepatieiB ont des tiges et des branches filiformes, ériger et rampage. Fougères et champignons se poser sur pied. 626. Les feuilles. Les fougères sont caractérisées par leur groat Développement de feuilles appelées frondes. Ils sont rarement s

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. 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 CBYPTOGAMIA OB FLOWERLESS PLANTS.. 511, Chara foetiiln. 513, Portion of a br;iDcli ; tlia two reproductive organs- it, Globule; &, nacule. bearing slender, whorled, leafless branches. The mosses and HepatieiB have filiform stems and branches, erect and creeping. Fern leaves and mushrooms arise on stipes. 626. Leaves. The ferns are characterized by their groat development of leaves called fronds. They are rarely simple, often pinnatifiA, or pin- nate, simply, doubly or triply. Their venation is fork-veined and their vernation circinate. The loaves of the mosses and Hepatica; are veinlcss and delicate, mostly ovate and entire, numerously covering the axis. Those of the latter are often garnished with stipule-like processes called am- pkigastria. 627. Thallus. The egetative system of the Thallogens consi.'ts either of delicate fiLimonte or of flattened membranes, varying in color through every shade and hue. In Marohantia, 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 ConfervsB to the gigantic seawrack, a fur- long in length. Its structure is purely cellular and uniform, or, as in Marchautia, 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- ndia and archegonia; ar.d by their reaction spores in various spore- vessels arc producMl They have been

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