The elements of botany for beginners and for schools . ndeed, Thallopliytes are so multifarious, sonumerous in kinds, so protean in their stages and transformations, so re-condite in their fructification, and many so microscopic in size, either of Fig. 542. Fructification of a Jungermannia, magnified; its cellular spore-stalk,surrounded at base by some of the leaves, at summit the 4-valved spore-case open-ing, discharging spores and elaters. 543. Two elaters and some spores from thesame, highly magnified. FiQ. 544. One of the frondose Liverworts, Steetzia, otherwise like a Junger-mannia; the s
The elements of botany for beginners and for schools . ndeed, Thallopliytes are so multifarious, sonumerous in kinds, so protean in their stages and transformations, so re-condite in their fructification, and many so microscopic in size, either of Fig. 542. Fructification of a Jungermannia, magnified; its cellular spore-stalk,surrounded at base by some of the leaves, at summit the 4-valved spore-case open-ing, discharging spores and elaters. 543. Two elaters and some spores from thesame, highly magnified. FiQ. 544. One of the frondose Liverworts, Steetzia, otherwise like a Junger-mannia; the spore-case not yet protruded from its sheath. 166 CEYPTOGAMOUS OR FLOWERLESS PLANTS. [SECTION 17. the plant itself or its essential organs, that they have to be elaboratelydescribed in separate books and made subjects of special study. 504. Nevertheless, it may be well to try to give some general idea ofwhat Algae and Lichens and Fungi are. Linnseus had them all under theorders of Algae and Fungi. Afterwards the Lichens were separated; but 645 646 647. of late it has been made most probable that a Lichen consists of an Alghand a Fungus conjoined. At least it must be so in some of the ambiguousforms. Botanists are in the way of bringing out new classifications of theThallophytes, as they come to understand their structure and relationsbetter. Here, it need only be said that 505. Lichens live in the air, that is, on the ground, or on rocks, trunks,walls, and the like, and grow when moistened by rains. They assimilate air,water, and some earthy matter, just as do ordinary plants. Algae, or Sea-
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1887
