63 
E. ovatus, Kjellm. var. avachnoideus, Rke. Very rare. 
Fig.: Plate XII, 30. 
Reproduction : Unilocular and plurilocular sporangia in Winter. 
Notes: Found in lobster tank at Marine Biological Station. 
E. Hincksiae, Harv. Locally abundant. 
Fig. : Harvey I, 84. 
District: Port Erin. 
Zone: Same as host. 
Occurrence : Pseudo-perennial. 
Reproduction : Plurilocular sporangia present all Summer; unilocular 
sporangia rare and formed only in Spring. 
Notes: Epiphytic on Laminaria thalli, especially Saccorhiza polyschides. 
During winter basal parts only remain. JBest growth in 
spring and early Summer. MHas occasionally been found 
on species of Fucus. 
E. granulosus, Ag. Not uncommon. 
fie. : Harvey I, 92. 
District: Port Erin; Port St. Mary; Castletown; Pooyllvaaish. 
Zone: L.W.O.S.T. and below. 
Occurrence: Pseudo-perennial. 
Reproduction : Plurilocular sporangia common in Summer (suspected 
to be of two types with unequal sized loculi). Unilocular 
sporangia occasional in Spring on same thallus as plurilocular 
sporangia. 
Notes: Deep water form generally found in situations where there is 
plenty of water movement; frequently forms a fringe 
round the rim of the Breakwater buoy (Port Erin). 
Gen. Pylaiella, Bory. 
P. hitovalis, Kjellm. Abundant. 
Fig.: Knight (1923). 
District: In all districts. 
Zone: H.W.O.N.T. to L.W.O.N.T. 
Occurrence : Pseudo-perennial. 
Reproduction : Plurilocular sporangia normal to plants growing on 
Ascophyllum nodosum.  Unilocular sporangia usual on 
plants growing on Fucus species. Both types of host may 
bear occasional plants with unilocular and plurilocular 
sporangia. 
Notes: One of the commonest Ecitocarpaceae found between tide 
marks. Most luxuriant in summer but persisting as 
somewhat truncated diatom-covered plants in winter. 
