300 FLORA OF PLYMOUTH SOUND 



Stenogramme interrupta, 4- ! Gracilaria confervoides 



spores, ? . 

 Phyllopliora rubens. 

 Poly ides rotundus. 

 Spondylothamnion multifida. 

 Antithamnion plumula, j3, A. 



cruciatum. 

 Bonnemaisonia asparagoides. 

 Hydrolapathum sanguiueum. 

 Rliodomela subfusca. 



Cutleria multifida. 

 Dictyopteris, c? j ? ^ 4-spores. 

 Dictyota dichotoma. 

 Sporocbnus pedunculatus. 

 Artlirocladia villosa. 

 Desmarestia ligulata, D. acu- 



leata. 

 Spbacelaria filicina. 

 Fucus canaliculatus. 



It is naturally impossible to say at what particular point in the 

 tbree miles course the different weeds were gathered by the trawl. 

 Later in the same day the " Penguin " trawled inside the Sound from 

 the Breakwater lighthouse to Batten Pier, and on the trawl many 

 of the rarer weeds, previously described as growing in the Sound, 

 were found, but in what particular locality they were taken up it is 

 not possible to say. Sucb weeds were Spyridia filamentosa (the only 

 time I found it in the inner part of the Sound), Stenogramme inter- 

 rupta (in abundance), Nitophylluin Bonnemaisoni and N. Hillise, 

 Scinaia furcellata, Sphs^rococcus coronopifolius, Griffithsia corallina, 

 Arthi'ocladia villosa, Dictyopteris polypodioides. 



Bovisand Bay. 



The local interpretation of " Bovisand Bay " is much wider than 

 that sanctioned by the Admiralty chart. Locally, one understands 

 the waters between Staddon Point in the north, Renny Point and 

 the Shagstone in the south. The beacb of Bovisand Bay proper 

 ordinarily presents but few weeds ; after a storm the weeds, it is 

 said, lie ten to twelve feet thick, tons being carted away as manure. 

 Between Andern Point and Renny Point, especially in the immediate 

 neighbourhood of Renny Point, the rock-pools are well stocked with 

 various weeds, including Nemalion multijidum, Chylodadia articulata, 

 Lomentaria kaliformis, Ceramium acanthonotum, C. ciliatum, and 

 species of Chaiitransia, Grijfithsia, Rhodomela, Laurencia, Delesseria, 

 Gymnogongrus, Spondylothamnion ; Ptilota elegans (in great abun- 

 dance), Gelidium corneiim (several varieties, in plenty), Mesogloea 

 vermiformis, Dictyota, Ectocarpus, Cladophora, Bryopsis plumosa. 



Dredging in the waters between Staddon Point and Renny Point 

 brings to light many interesting plants, which, taken in connection 

 with those dredged round the Duke Rock Buoy, readily explain the 

 occasional finding, as cast-up weeds, of Stenogramme interrupta, Spy' 

 ridia filamentosa, &c. I dredged in Bovisand Bay at least 90 of 

 the 350 species found in Devonshire waters, including — 



