Leptoid

A leptoid is a type of elongated food-conducting cell in the stems of some mosses, such as the family Polytrichaceae. They surround strands of water-conducting hydroids. They have some structural and developmental similarities to the sieve elements of seedless vascular plants. At maturity they have inclined end cell walls with small pores and dege...
Found on http://en.wikipedia.org/wiki/Leptoid

leptoid

(from the article `bryophyte`) ...for example, a complex conducting strand is often formed in the centre of the stem. It consists of an internal cylinder of water-conducting cells ...
Found on http://www.britannica.com/eb/a-z/l/37

leptoid

leptoid One of the living elongated thin-walled cells forming simple conducting tissue in bryophytes; a tubular cell in the stem of certain pteridophytes (ferns).
Found on http://www.wordinfo.info/words/index/info/view_unit/1173/2
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