| 单词 |
green alga |
| 释义 |
green alga, n.
Brit. |ˌgriːn ˈalgə|, U.S. |ˌgrin ˈælgə|
[‹ green adj. + alga n.]
Any of various eukaryotic, photosynthetic algae, chiefly of freshwater and terrestrial habitats, which have similar pigmentation to the higher plants, with green chloroplasts containing two specific types of chlorophyll; esp. an alga of the division Chlorophyta. Usu. in pl.
1849W. H. Harvey Man. Brit. Marine Algae (ed. 2) The Chlorospermeæ or green Algae are the simplest in structure. 1857M. J. Berkeley Introd. Cryptogamic Bot. § 133 Of those green Algae which are masked by calcareous matter, there are two series distinguished by their monosiphonous or polysiphonous stems. 1911G. S. West in A. G. Tansley Types Brit. Vegetation vii. 197 The Green Algæ (or Chlorophyceæ) are a prominent feature of all the lake-areas. 1939E. A. Bessey Text-bk. Mycol. ii. 50 Another alternative is to regard the Chytridiales as derived from some of the one-celled green algae. 1969F. E. Round Introd. Lower Plants ii. 12 A group of green algae (Xanthophyta) not included with the Chlorophyta are difficult to characterize briefly. 2002Water Gardener July 78/1 Technically the correct term for blanket weed is ‘filamentous green algae’, and rather than there being just one type as many people think, there are in fact hundreds. |
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