File:The Monograph of the Gymnoblastic or Tubularian Hydroids. Plate VII.png

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Description
English: Gemellaria implexa (=Zanclea implexa; Hydrozoa: Capitata: Zancleidae).
  • 1 – a portion of a colony, magnified.
  • 2 – a colony, natural size, attached to a piece of rock.
  • 3 – a planoblast shortly after liberation, as it appears while floating passively in the water, very much magnified. The tentacular appendages are seen with their peduncles in various states of extension.
  • 4 – a marginal tentacle of the planoblast still more enlarged, and with the appendages entirely retracted.
  • 5 – longitudinal section of a portion of the hydranth showing histological structure:
    • a – ectoderm with imbedded thread-cells;
    • b – muscular layer;
    • c – external large celled layer of endoderm;
    • d – internal or glandular layer of ectoderm immediately surrounding the somatic cavity.
  • 6 – one of the clavate sacs filled with thread-cells from the umbrella-margin of the planoblast.
  • 7 – a thread-cell from the capitulum of a tentacle previous to evolution.
  • 8 – the same after evolution.
  • 9 – one of the large thread-cells from the ectoderm of the hydranth previous to evolution.
  • 10 – the same after evolution.
Date
Source Allman G. J. The Monograph of the Gymnoblastic or Tubularian Hydroids. – Conclusion of Part I and Part II. – London: Robert Hardwicke, 1972. – Plate VII
Author
George James Allman  (1812–1898)  wikidata:Q744703 s:en:Author:George James Allman
 
George James Allman
Alternative names
G.J.Allman; George Allman; George J. Allman
Description British botanist, zoologist, university teacher and ecologist
Date of birth/death 1812 Edit this at Wikidata 24 November 1898 Edit this at Wikidata
Location of birth/death Cork Parkstone
Authority file
creator QS:P170,Q744703
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Image extraction processThis file has an extracted image: Zanclea implexa, portion of colony (from Allman, 1872).png.
lang=en

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current18:56, 30 August 2014Thumbnail for version as of 18:56, 30 August 20142,531 × 3,567 (3.37 MB)Mithril (talk | contribs)=={{int:filedesc}}== {{Information |Description = {{en|1=Plate VII from the Monograph of the Gymnoblastic or Tubularian Hydroids. The original description can be found [http://www.biodiversitylibrary.org/item/37418#page/34/mode/1up here].}} |Source...

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