402 RECENT LITERATURE ON ALG^. 



common about Yealaud and Silverdale, 60. — R. diimetorwn var. 

 ferox Weihe. Wallasey, 58. Hi^^htown, 59. — Var. '-^concinitiis 

 Warren. Walton, 59. — R. conjlifoUus Sm. var. '''•sublustris Lees. 

 Silverdale, 60. Garstang, 60 (W). Frequent throughout the 

 Mersey province. A curious form with large septenate leaves, and 

 calyx claspmg fruit, is frequent about Walton, 59. — R. casius var. 

 aqitaticus W. c^ N. Hightown and Crosby, 59. — R. rosaceus var. 

 sylve^trh X Spremjelii. Ince Blundell, 59. "A very interesting 

 hybrid, which has every appearance of bemg rightly named" (Mr. 

 Kogers in Exch. Club Eep. 1896, 519). — R. mercicus var. hracteatus 

 X leucostachys. Walton, 59. "These specimens seem rather 

 nearer R. inercicus than to R. leucostachi/s, but Mr. Wheldon is 

 probably right in considering them a hybrid" (Mr. Rogers in 

 Exch. Club Rep. 1896, 519). — R. casius x IdcBus. Fazackerley, 59. 

 Mr. Rogers says: "Looks like the hybrid which Prof. Babington 

 latterly thought his var. intermedins might be" (Exch. Club Rep. 

 1896, 519).— J. A. Wheldon. 



Monmouth and West Gloucester Records. — The following 

 species not recorded for v.-cc. 31 and 35 in Top. Bot. have been 

 noticed this year : — Caucalis nodosa Scop. 35. Plentiful on Caldicot 

 and Roggiett Moors. — Galiwii tricome Stokes. 35. Cornfields, 

 Llanmelin. — Specularia hybrida A. DC. 31. Beachley ; queried 

 for v.-c. 34 in Top. Bot. — Veronica scutellata L. 34. Madget. — 

 Orohanche minor L. [eu-minor). 35. Clover crops near Chepstow. — 

 Osmunda regalis L. 35. A solitary plant in a marshy thicket at 

 Shirenewton ; first noticed by Miss Woodall. In the Report of the 

 Botanical Exchange Club for 1897 Mr. Charles Bailey mentions the 

 following species as " new county records for v.-c. 35": — Polyyala 

 vulgaris L., Arenuria serpyliifolia Pursh, Geranium dissectum, L., 

 Euonymus europaus L., Conium maculatum L., Lamium Galeobdolon 

 Crantz, Salix cinerea L., Potamogeton iJer/oliatus L., and P. crispus 

 L., all of which were recorded from the county in my paper on 

 " Recent Additions to the Flora of West Gloucester and Monmouth " 

 in this Journal for 1894, pp. 263-271, with the exception of Lamium 

 Galeobdolon, which, like the rest, is a very common plant in this 

 district. — W. A. Shoolbred. 



NOTICES OF BOOKS. 

 Recent Literature on Alg^e. 



In the Bulletin de V Herbier Boissier for June, 1898, Prof. Chodat 

 publishes a continuation of his "Etudes de Biologie Lacustre." 

 Under the title " Recherches sur les algues littorales " he deals 

 with (a) perforating algaB in freshwater shells, (b) chalk-devouring 

 alg£e which produce markings on pebbles by means of decay, (c) 

 ColeochcBte pnlvinata and the germination of its oospores, (d) littoral 

 algae, more particularly Cladophora glomerata and Batrachospermum 

 den sum. 



