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99 
C. Deslongchampsti, Chauv. Common. 
fie.: Harvey III, 220. 
District: In all districts. 
Zone: M.T. zone downwards. 
Occurrence: Pseudo-perennial. 
Reproduction: In Spring and Summer. 
Notes: Common pool alga; regeneration of fragments in early Spring. 
C. civcinatum, J. Ag. 
Fig : Harvey III, 228 [as Cervamium decurrens}. 
District: Douglas Bay. 
Notes: Recorded by Mrs. Gatty and Talbot. 
C. botryocarpum, Griff. 
is. : Elarvey III, 227. 
District: Douglas Bay (Talbot). Port Erin; Pooyllvaaish. 
Zone: M.T. in pools. 
Occurrence: Pseudo-perennial. 
Reproduction : Cystocarpia in Autumn. 
C. rubrum, Ag. Very common. (See note 19, p. 117.) 
Pie.: Harvey III, 226. 
District: In all districts. 
Zone: M.T. zone downwards. 
Occurrence: Pseudo-perennial between tide marks possibly perennial 
in deep water. 
Reproduction: See note 19. 
Notes: Plants healthiest and most abundant in mid-tide pools; 
also found epiphytic on Fucus species, good illumination 
increases percentage of tetrasporic plants. 
C. fiabelliigerum, J. Ag. Not common. 
Fig.: Harvey III, 235. 
District: Port Erin; Port St. Mary; Douglas Bay (Talbot). 
Zone: M.T. zone to L.W.O.N.T. 
Occurrence: Pseudo-perennial. 
Reproduction: Spermatia in Winter; tetraspores and cystocarpia 
not recorded. 
C. echionotum, J. Ag. Not common. 
ire, > Harvey. lil, 236. 
District: Port Erin; Port St. Mary; Pooyllvaaish; Douglas Bay 
(Mrs. Gatty). 
Zone: M.T. zone and below in pools. 
Occurrence : Pseudo-perennial. 
Reproduction: Tetraspores in Summer. 
C. ciliatum Ducluz. Not common. 
Fig.: Harvey III, 238, 
District: In all districts. 
Zone: M.T. zone downwards in pools. 
Occurrence: Annual, Summer. 
Reproduction: No data. 
