No. 100. 
June, 1893. 
dr^illp. 
A QUARTERLY RECORD OE CRYPTOGAMIC BOTANY 
AND ITS LITERATURE. 
ALGiE. 
New or Critical British Alg.e. 
By E. A. L. Batters, B.A., LL.B., F.L.S. 
Cladophora Crouani, Kiitz. Tab. Phyc. hi., tab. 100. 
This species forms large entangled bunches loosely lying on the 
bottom of the sea. The filaments are moderately rigid, from 100- 
200 p in diameter. The branches short, scattered, lateral, subse- 
cund, rarely opposite. The older portion of the principal branches 
and branchi ets frequently naked for long distances; joints from 
1J-3 times longer than their diameter. 
I dredged this interesting species, or variety, from 4-5 fathom- 
water in Lamlash Bay, Arran, last August. It formed intricately 
entangled bundles of a clear grass-green colour, which appeared to 
have been lying unattached on the bottom. The tufts are with 
difficulty disentangled, and then the filaments are seen to be 
branched in a very irregular manner between dichotomous, alternate 
and opposite, the branches spreading at very wide angles and bent 
at intervals in a zigzag manner, long distances of the main 
filaments being naked, the ultimate branchlets short and usually 
opposite. In his <£ Species Algarum,” Kiitzing speaks of Chauvin’s 
Conferva Crouani as a variety (/3. horrida) of Cladophora 
rectangularis , Griff., but in the “Tabulae Phycologicse ” he once 
more raises it to specific rank as Clad. Crouani. Most authors 
have regarded the plant as only a deep-water form of C. rectangu- 
laris, but, judging from my specimens, the habit of the two plants 
is very different, C. Crouani , as Kiitzing remarks, more resembling 
Harvey’s Clad. Macallana , from which it differs in the ultimate 
branchlets being frequently opposite. 
Haplospora globosa, Kjellm. 
This plant is thus described by Kjellman in his “ Bidrag till 
Kannedomen om Skandinaviens Ectocarpeer och Tilopterider,’ , 
Haplospora. Thallus brown, filiform, branched on all sides, more 
or less polysiphonous below, monosiphonous above. Sporangia 
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