File:EB1911 Hydromedusae - possible modifications of persons of a gymnoblastic Hydromedusa.jpg

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Summary

Description

English: Diagram showing possible modifications of persons of a gymnoblastic Hydromedusa (see legend below).

Date

published 1911

Source

“Hydromedusae,” Encyclopædia Britannica (11th ed.), v. 14, 1911, p. 150, fig. 49.

Author

After Allman.

Permission
(Reusing this file)

This image comes from the 13^th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

English: Legend:

a,	Hydrocaulus (stem).
b,	Hydrorhiza (root).
c,	Enteric cavity.
d,	Endoderm.
e,	Ectoderm.
f,	Perisarc, (horny case).
g,	Hydranth (hydriform person) expanded.
g′,	Hydranth (hydriform person) contracted.
h,	Hypostome, bearing mouth at its extremity.
k,	Sporosac springing from the hydrocaulus.
k′,	Sporosac springing from m, a modified hydriform person (blastostyle): the genitalia are seen surrounding the spadix or manubrium.
l,	Medusiform person or medusa.
m,	Blastostyle.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	23:20, 20 November 2018		545 × 855 (129 KB)	Library Guy	{{Information \|description ={{en\|1=Diagram showing possible modifications of persons of a gymnoblastic ''Hydromedusa'' (see legend below).}} \|date =published 1911 \|source =“Hydromedusae,” ''Encyclopædia Britannica'' (11th ed.), v. 14, 1911, p. 150, fig. 49. \|author =After Allman. \|permission ={{PD-Britannica}} }} {{en\|Legend:}} {\| \|-valign="top" \|{{nowrap\| ''a'', }}\|\|Hydrocaulus (stem). \|-valign="top" \| ''b'',\|\|Hydrorhiza (root). \|-valign="top" \|&ems...

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