2 definitions
for Sphagnum
From The Collaborative International Dictionary of English v.0.48 :
Sphagnum \Sphag"num\, n. [NL., fr/ Gr. ??? a kind of moss.]
(Bot.)
A genus of mosses having white leaves slightly tinged with
red or green and found growing in marshy places; bog moss;
peat moss.
[1913 Webster]
From WordNet (r) 2.0 :
sphagnum
n : any of various pale or ashy mosses of the genus Sphagnum
whose decomposed remains form peat [syn: sphagnum moss,
peat moss, bog moss]