59 
Gen. Scytosiphon, Ag. 
S. lomentarius, J.Ag. Common. 
Fig.: Harvey I, 31 [as Chorda lomentaria]. 
District: In all districts. 
Zone: H.W.O.N.T. to M.T. zone. 
Occurrence: Pseudo-perennial. 
Reproduction: Plurilocular sporangia from November to March. 
Notes: See page 33. 
S. lomentarius, J.Ag., var. zostericola, Thur. Not common. 
Fig.: None available. 
District: Port St. Mary; Castletown ; Derby Haven. 
Zone: L.W.O.S.T. 
Notes: Found on the leaves of Zostera. 
Fam. HYDROCLATHRACEAE. 
Gen. Colpomenia, Derb. et Sol. 
C. sinuosa, Derb. et Sol. Common. 
Fig.: Oltmanns II, p. 64. 
District: In all districts. 
Zone: H.W.O.N.T. to L.W.O.N.T. 
Occurrence: Pseudo-perennial. 
Reproduction: Plurilocular sporangia in Summer; _ unilocular 
sporangia unknown. 
Fam. ASPEROCOCCACEAE. 
Gen. Asperococcus, Lamour. 
A. fistulosus, Hooker (see Note 3, p. 105). Common. 
Fig.: Harvey I, 48 [as A. echinatus}. — 
District : In all districts. 
Zone: H.W.O.N.T. to M.T. zone. 
Occurrence: Pseudo-perennial. 
Reproduction: In Autumn, unilocular and plurilocular sporangia on 
the same plants ; in Winter unilocular sporangia numerous ; 
in Spring unilocular and plurilocular sporangia on separate 
plants. 
Notes: In Winter small specimens of A. fistulusos may be found in the 
high tide zone, but during the Summer they are present 
only in the M.T. zone. 
A. bullosus, Lamour. Frequent. 
Fig.: Harvey I, 47 [as A. Turner]. 
District: Port Erin; Port St. Mary; Castletown; Pooyllvaaish. 
Zone: M.1. zone: to L.W.O.S.T. 
Occurrence: Annual, Summer. 
Reproduction: Unilocular sporangia in Summer. 
A. compressus, Griff. 
Fig.: Harvey I, 46. 
Notes: Single record. Cast ashore at Pooyllvaaish. No other data 
available. 
