Hydroid

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For the animals, see Hydrozoa.

Hydroid may refer to:

Contents

[edit] Marine Biology

Hydroids are coral-like animals living in Antarctic seas (Ross sea, etc.).

[edit] Botany

In mosses, hydroids are water conducting tissues analogous to tracheids. However, they lack any pitting or surface texture.[1]

Hydroids have been found in some Rhynie chert plants, including Aglaophyton, where they were initially mistaken for xylem vessels.

[edit] See also

  • Leptoid, a related sucrose-transporting vessel analogous the phloem of vascular plants

[edit] References

  1. ^ Mishler, Brent D.; Steven P. Churchill (1984). "A Cladistic Approach to the Phylogeny of the "Bryophytes"". Brittonia 36 (4): 406–24. doi:10.2307/2806602. ISSN 0007-196X. 


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