File:Botany of the living plant (1947) (20219404828).jpg

Title: Botany of the living plant
Identifier: botanyoflivingpl00bowe (find matches)
Year: 1947 (1940s)
Authors: Bower, F. O. (Frederick Orpen), 1855-1948; Wardlaw, C. W. (Claude Wilson), 1901-
Subjects: Botany; Plants
Publisher: London, Macmillan and Co. , ltd.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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MI I- AU-.S 50/ are merely amplifications of the soma, without any change of constitution of the tissues, or of the nuclei. But others are oi the nature of shortn ata instance, a prothallus may arise from the Fern Plant without th<- intervention of spores (apospory), as in certain forms of Athyrium or Polystichum (Fig. 401,
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1 â¢a - o '- -r t â -* 111 O . MS > j= - 9,2 «i .2 â -s: - C - O -2 - If? si?"* It â ⢠â _ â - " c u^ â - > Q q td = <-< iSâ - *» .H.5-S 5 5 *â x â a â â 3*1 o B"2 s 1: *â¢â * - â c _ 5 - r: e ~ £ â - 1 c A, B). Or a Fern-Plant may spring directly from a prothallus without the sexual process (apogamy), as in Ptcris erotica (Fig. 402, C). Such example- show that the events of the life-cycle are not immutable. But they raise difficulties of interpretation in terms of chromosomes. In the relatively simple case of Dryophris pseudo-mas, var. polydactylum, a young sporophyte is produced as a direct outgrowth from the prothallus. By a careful examination of the bud-forming tissue it has been found that the bud

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