File:The structure and development of mosses and ferns (Archegoniatae) (1918) (14598348660).jpg

Identifier: structuredevelop00camp3 (find matches)
Title: The structure and development of mosses and ferns (Archegoniatae)
Year: 1918 (1910s)
Authors: Campbell, Douglas Houghton, 1859-1953
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Publisher: New York, Macmillan
Contributing Library: The LuEsther T Mertz Library, the New York Botanical Garden
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

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e, which in the olderparts of the stem often has its walls strongly thickened andreddish brown in colour. An epidermis, clearly recognisableas such, cannot usually be detected. The outer cells containchlorophyll, which is wanting in the central cylinder. The rhizoids in Funaria grow mainly from the base of thestem, and the first ones arise very soon after the young bud isformed. Their growth, like that of the protonemal branches,is strictly apical, and they branch extensively. The young onesare colourless, but as they grow older the walls assume a deepbrown colour. Usually the division walls in the rhizoids arestrongly oblique. Their contents include more or less oil, andwhere they are exposed to the light, chlorophyll. ^ This is only strictly true in the smaller branches. VI. THE BRYALES The Sexual Organs 195 Funaria is strictly dioecious. The male plants (Fig. loi,A) are easily distinguished by their form. They are about Icm. in height, with the lower leaves scattered, but the upper
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