BihUograj)hical Notices. 127 



IThnllu? noarlv wanting.'. L. xphtproidon, f. peralbata, Nyl. 

 00. < Thalliis pdW jery. L. (.phrf-rotden, f. tntrrobola, Ach. 



I Thallus verrucoso-granulate » 01. 



J., ( Spores 24 niik. long. L. /ipfitproides, f. leitcococca, Nyl. 



\ Spores 10 mik. long. L. ciipreo-rogclla, v. c/ilorotico'ides, Nyl. 



ri.-) I Apotbecia 08-1 millim. in diameter ; . . 67i 



) Apothecia at most 0*7 millim. in diameter 0.3. 



IApothecia constantly dark. L. sahuletorum, v. iniliaria, f. sphcp- 

 ralis, Fr. 

 Apothecia pale or gradually darkened 04. 



n, 1 Paraphy.ses wanting or deliquescent 05; 



( Parapliyses nearly free 06. 



illymenium at first tinted blue, then violet, by iodine. X. rtifi- 

 difla, fine we. 

 Ilymeniuni at first tinted blue, then vinous yeUow, by iodine. 

 L. apharuides, f. epiranthoidcs, Nyl. 



i Spores 4-5 times as long a.<! broad. L. cupreo-roseUa, \. fusco- 

 viridis, Anzi (Anzi, Langob. 403). 

 Spores 2^-3| times as long as broad. L. sphceroides, v. tylo- 

 carjxi, Nyl. 



r,j I Apothecia gradually darkened into black ... 08. 



I Apothecia constant pale yellow or red-brown 70. 



na I Corticolar. L. sphccroides, f. vevsatUis, Nyl. 



j Saxicolar 09. 



i Spores 20 mik. long. L. cupreo-roseUa, v. fu-scovin'dis, f. hxjqro- 

 phila, Stizb. (Am. 20j. 

 Spores 30 mik. long. L. sabuletonan, v. ohscurata, f. muri- 

 cola, Nyl. 



) Apothecia sessile. L. sphceroides, Dicks. (Fellm. 158; Anzi, 

 Langob. 261 ; Ilepp, 513; Schser. 207 pp. ; Zw. 277). 

 Apothecia substipitate, pale below. L. spharuides, v. ^ubstipi- 

 fata, Nyl. 



BIBLIOGRAPHICAL NOTICES. 



Flora Europcea Algai-um aquce dulcis et siihnarinc^. Auctore Lu- 

 Dovico Kabkxhorst, Philos. Dr., Ordinis Albrecht. Eqtiite, Acad, 

 et Societ. plur. Sodali. 



Thk completion of Dr. Eabenhorst's work upon the European 

 freshwater Alga? cannot fail to be acceptable to those botanists who 

 lave directed their attention to these much-neglcctcd and ill- 

 understood organisms. Tlie advance which has been made during 

 the last twent}- years in the knowledge of these plants has almost 

 rendered obsolete what had previously been written upon the subject. 

 In England there is liter:illy no work sufficient for students of 

 freshwater Alga). The ' English Flora,' Dillwj-n and Grcville, must 

 now be looked upon as antiquated, and Hassall and Harvey's 'Manual' 

 as out of date. The great work of the latter author, viz. the 

 ' Phycologia Britannica,' is limited to marine species. Mr. Berke- 



