File:The natural history of plants, their forms, growth, reproduction, and distribution; (1902) (14785619213).jpg

Identifier: naturalhistoryof02kern (find matches)
Title: The natural history of plants, their forms, growth, reproduction, and distribution;
Year: 1902 (1900s)
Authors: Kerner von Marilaun, Anton, 1831-1898 Oliver, Francis Wall, 1864- Macdonald, Mary Frances Ewart Busk, Marian Balfour, Lady
Subjects: Botany
Publisher: London, Blackie
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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s of genera have a special interest thesewill be alluded to. No attempt is made to observe any due sense of proportion intreating of the different alliances. Thus a small alliance containing but few mem-bers of especial interest will receive more detailed consideration than one vastly 618 THE SUBDIVISIONS OF THE VEGETABLE KINGDOM. larger, the numerous representatives of which are unrelieved in their monotony.This method, truly, is an unconventional one, but in view of the restrictions ofspace, perhaps better suited to our purpose than any other. Phylum 1.—MYXOTHALLOPHYTA. Organisms destitute of chlorophyll, whose vegetative state consists of a mass of naked proto-plasm (plivsmodium). Reproduction by spores, from which arise swarm-spores or myx-amoeboe, which unite again into plasmodia. Alliance I.—Myxomycetes, Slime-Fungi. For the most part saprophytic upon dead organic and especially vegetable sub-stances; they occur chiefly on accumulations of the dead parts of plants—leaves,.
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Fig. 367.—Myxomycetes. 1 A group of sporangia of Slemonitis fusca. « A single sporangium; x 6. « Dendritic mass of sporangia of Spumaria alba on-a Grass leaf. * Sporangium of Dictydium cernuum; x 25. ^ A group of sporangia of the same. ^ and ? Sporangia ofCraterium minutum; 6 x 25. 8 Sporangia of Arcyria punicea. 9 A single sporangium; x 10. lo Part of the net-like-capillitium of the same; xl60. n Fructification of Lycogala epidendrum on a piece of wood. 2 Leocarpus fragilis; aPlasmodium on the right; several sporangia on the left. tan, rotting wood, and the like; they are rarely parasitic. Their life-history is aafollows:—On the germination of the spores the membrane bursts, and a slimy^nucleated mass of protoplasm escapes, which either swims in water by means of a. THALLOPHYTA. 619 single flagellum, or creeps about on a damp substratum; these motile bodies are themyxamosbce. These amoebge increase at the expense of absorbed nutriment, andundergo repeated division. Ultimately t

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