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

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Description
English: * 1 – A colony of Cladonema radiatum, magnified. The drawing has been made from the free variety of this hydroid.
  • 2 – The same slightly larger than natural size.
  • 3 – Cladonema radiatum, a free mature planoblast floating in the water.
  • 4 – The same fixed by its appendages of attachment, and with its marginal tentacles thrown back over its umbrella.
  • 5 – A marginal tentacle contracted; the three apendages terminating in spherical capitula near the base of the tentacle are the appendages of attachment, and do not participate in the contraction undergone by the rest of the tentacle and its branches. The ocellus, with its pigment and refracting body, is seen in the enlarged base of the tentacle.
  • 6 – Extremity of one of the nodulated branches of a marginal tentacle slightly contracted.
  • 7 – Origin of the radiating canals as seen from the summit of the umbrella.
  • 8 – Velum showing its great width and its circular and radiating fibrillae.
  • 9 – Planoblast at the period of its liberation.
  • 10 – Mature planoblast, natural size.
  • 11 – Stauridium productum (=Stauridiosarsia producta), a colony magnified.
  • 12 – The same, natural size.
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 XVII
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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This file has an extracted image: Cladonema radiatum, colony (from Allman, 1872).png.
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current19:03, 30 August 2014Thumbnail for version as of 19:03, 30 August 20142,531 × 3,567 (3.52 MB)Mithril (talk | contribs)=={{int:filedesc}}== {{Information |Description = {{en|1=Plate XVII from the Monograph of the Gymnoblastic or Tubularian Hydroids. The original description can be found [http://www.biodiversitylibrary.org/item/37418#page/74/mode/1up here].}} |Source...

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