676 RECORD OF CURRENT RESEAHCHES RELATING TO 



de la Cbapclle, occupying 215 pages, lias just been published. In its 

 arrangement it recalls tbat of Dr. Nylander's ' Synopsis.' Tbe autbor 

 bas grouped 631 species or subspecies. 204 are common to tbe two 

 districts; 109 are peculiar to Mont-Dore, and 318 to Haute- Vienne — 

 tbat is, tbe former bas 313 lichens, and the latter 522. 



Of the 119 species peculiar to Mont-Dore, 14 are entirely new, 

 and are : — Stereocaulon curtulum, S. acaulon ; Parmeliopsis subsore- 

 dians; Pannariairijptophylliza ; Lecanora suhintricans ; Lecidea aglmza, 

 L. instrata, L. planula, L. prcecontigua, L. badio-pallens, L, hadio- 

 pallescens, L. instratula, L. umbriformis, L. thiojiholiza. 17 others are 

 new to France, 



With regard to tbe 522 species of Haute-Vienne, 36 are new, 

 viz. : — 



Ephcebe intricata ; Collema chalazanellum ; Collemopsis coracodiza ; 

 Stereocaulon acaulon ; Lecanora scotoplaca, L. nigrozonata, L. sub- 

 mergenda, L. immersata, L. Uparina, L. Biparti, L. conizella ; Pertu- 

 saria leucosora, P.flavicans ; Urceolaria violaria ; Lecidea submersula, 

 L. acervulans, L. terebrescens, L. acclinoides, L. albuginosa, L. chryso- 

 teichiza, L. segregula, L. pauperrima, L. girizans v. opegrapMza, 

 L. Pichardi, L. conioptiza, L. modica, L. crepera, L. griseo-nigra, 

 L. sequax, L. gymnomitrii ; Melaspilea deviella ; Endocarpon leptopliyl- 

 lodes ; Verrucaria Mortarii, V. chlorotella, V. viridatula, V. faginella, 

 and 35 others. 



Tbe catalogue is followed (1) by some notes on tbe geographical 

 distribution of the species and the nature of the substratum : the 

 autbor records, amongst other remarkable facts in botanical geography, 

 the presence on tbe central plateau of France of P. aquila, which 

 usually frequents the sea-shore ; (2) by a glossary of some technical 

 words frequently employed in Lichenography ; and (3) concluding 

 with an alj)habetical table referring to the numbers in the catalogue. 



Algae. 



Morphology of Floridese.* — Tbe subjects treated of in Agardb's 

 most recent work on tbe Floridefe are as follows : — 



I. Tbe general appearance and external parts of tbe Florideae. 

 (1) General appearance. (2) Increase and branching of tbe external 

 parts. (3) Tbe root and the formations belonging to tbe root- 

 system. (4) Tbe stem. (5) Branches and leaves. 



II. The structure of the Floride^. (6) Nature of the cell- 

 membrane and cuticle. (7) Tbe cell-contents in various stages of 

 development, and in diiferent layers of the thallus. (8) Tbe con- 

 nection between tbe various cells, and the means by which this is 

 effected. (9) Tbe various processes of cell-formation, (10) Relation- 

 ship of position and grouping of tbe cells ; their union into different 

 layers, 



III. Organs of reproduction. (11) The antberidia. (12) Tbe 

 spbferospore-fruit and spbasrosijore. (13) The cystocarp or capsular 

 fruit. (14) Views in relation to tbe so-called double frixctification. 



* " Floiideornas Morphnlop;i," ' Sv. Vetenskaps-Akad. Haiidl.,' xv. (1879) 

 No. 6. See ' Bot. Centralbl.,' i. (1880) p. 33. 



