Q2 
P. fruticulosa, Spreng. Not common. 
Fig.: Harvey II, 105 {as Rytiphloea fruticulosa}. 
District: Port Erin; Port St. Mary; Castletown; Douglas Bay 
(Brady, Talbot). 
Zone: M.T. zone to L.W.O.N.T. in pools. 
Occurrence: Perennial. 
Reproduction : Spermatia in Spring; cystocarpia in Spring; tetra- 
spores in Summer. 
Gen. Pterosiphonia, Falk. 
P. parasitica, Schm. Rather rare. 
Fig.: Harvey II, 128 [as Polysiphonia parasitica\. 
District: Port Erin; Port St. Mary; Castletown; Douglas Bay 
(Brady, Talbot). 
Zone: M.T. zone to L.W-.0:S.L, 
Occurrence: Perennial or pseudo-perennial. 
Reproduction: Although this plant has been examined at all times 
of the year, no reproductive organs have been observed. 
Notes: Found under overhanging ledges in sheltered pools. 
P. thuyoides, Schm. Locally common. 
Fig.: Harvey II, 104 fas Rytiphloea thuyoides|. 
District: Port Erin; Port St. Mary; Pooyllvaaish; Castletown ; 
Douglas Bay (Brady, Talbot). 
Zone: M.T. zone downwards in pools. 
Occurrence: Perennial. 
Reproduction : Cystocarpia, spermatia and tetraspores in Spring. 
Gen. Brongniartella, Bory. 
B. byssoides, Bory. Common. 
Fig.: Harvey II, 129 [as Polysiphonia byssoides]. 
District: In all districts. 
Zone: LW-O:5.h, and below: 
Occurrence: Annual, Summer. 
Reproduction: Cystocarpia in July and August; tetraspores in 
September. 
Gen. Dasya, Ag. 
D. arbuscula, Ag. Frequent. 
inigee) lawvev. lil ox 
District: In all districts. 
Zone: Mt. zone to L.W-.O.S.1. sa pools: 
Occurrence: Perennial. 
Reproduction: Cystocarpia and spermatia in Summer; tetraspores 
in Autumn. 
D. ocellata, Harv. 
Bie.2 Harvey. Mi 13% 
District: Douglas Bay. : 
Notes: Recorded by Talbot; no data available. ; 
