Text-book of structural and physiological botany . alis an- gonia <^ and leaves <5 (x 400); 11. antheridium burst- tipyretica, with an inner ing, and allowing the antherozoids a to escape and outer peristome (x 350)- (after Schimper, x 30). forms in which the, growth is terminated by the productionof antheridia or archegonia at the apex of the stem oftenexhibit proliJicatio?i of the bud, as in Polytrichum ( IV.). Axillary buds by the side of the theca or of theantheridia often develope also by a process of renewal,forming growths known as innovations. 3 o6 Structural and Physiolog
Text-book of structural and physiological botany . alis an- gonia <^ and leaves <5 (x 400); 11. antheridium burst- tipyretica, with an inner ing, and allowing the antherozoids a to escape and outer peristome (x 350)- (after Schimper, x 30). forms in which the, growth is terminated by the productionof antheridia or archegonia at the apex of the stem oftenexhibit proliJicatio?i of the bud, as in Polytrichum ( IV.). Axillary buds by the side of the theca or of theantheridia often develope also by a process of renewal,forming growths known as innovations. 3 o6 Structural and Physiolog zeal Botany. The Musci are divided into two sub-classes, as follows :— I. Sphagnace^. Bog-mosses, According as the Sphagnacese grow in water or on a solid sub-stratum, they form a filiform or thalloid pro-embryo. In the sporo-I. carps are produced two kinds of spores; the larger are called7nacrospores^ the smaller mi-crospores ; the former only ger-minate. The mode of growthis shown in Fig. 431. [Thissection includes the single genusSphagnum.^. Fig. 431.—SphagiiMn acutifoliuvt, I. part of the stemwith two sporogonia a and four antheridial receptacles b(after Schimper, x 3); II. an antheridial receptacleseparated, with the perigonial leaves removed from thelower part so as to expose the stalked globular antheridia(more strongly magnified).
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