46 Lichenes. — Musci. 



Thalle cendre-blanchätre, squamuleux, ä squamules imbriquees, 

 crenelees, K — . Apothecies noires, convexes, depassant le thalle, 

 atteignant au plus 0,8 millimetres en diametre ; hypothecium vineux, 

 paraphyses assez epaisses, articulees, spores hyalines, triseptees, longues 

 de 0,01ö6 et larges de 0,006. 



Cette espece ou sous-espece est voisine du L. subnegans Nyl., dont 

 eile diifere surtout par des spores triseptees. 



No. 290. Lecidea Venantii. — Sur des roches quartzeuses, aux 

 Montees. 



Thalle cendre-brunätre, peu epais areole, ä ar^oles petites, K — , 

 Ca Gl — , hypothalle noir, hyphes 1 — . Apothecies noires, nues, ne de- 

 passant pas 1 millimetre en diametre, ä la fin convexes, immarginees, 

 depassant le thalle; hypothecium incolore, sommet des paraphyses 

 briinätre, paraphyses libres, articulees et noueuses vers le sommet, 

 spores d'abord hyalines, puis brun fonce, simples, longues de 0,010 — 12 

 et larges de 0,0053 — 63, gelatine hymeniale 1 -\- bleu persistant. 



Paul Vuillemin (Nancy). 



Britton, Elizabeth E., M o s s e s o f t h e C a t s k i 1 1 m o ii n - 



tains, N.-Y. (Torreya. I. p. 84. July 1901.) 



Brynm proligernm, Dicraunm viride, Zygodon viridissimus, Bnx- 

 baiimia aphylla , Bartramia Oederiana , Trichostomiim tenuirostre, 

 Homalia gracilis and Brynm capillare, from Woodland Valley; and 

 Raphidosteginin Jamesü, R. laxepatulum, Plagiothacinm striatellnni, 

 P. Mülleriannm, Hylocomium umbratiun , H. pyrenaiciim, Dicranum 

 fiiscescens and D. longifolium, from Slide Mountain, at an altitude of 

 3500 ft. " Trelease. 



Williams, R. S. , An enumeration of the mosses 



collect ed. (Bulletin of the New-York Botanical Garden. 



II. p. 105—148. PI. 15—24. May 1901.) 



An annotated list of mosses from the Klondike region of Alaska 

 and British America. The following species are described as new: 

 Ditrichum giganteiim, Bryobrittonia (n. gen.) pellucida, Brynm Daw- 

 sonense, B. conditnrn, B. submnticum , B. snborbicnlare , Plagio- 

 bryum argenteoides , Brachythecium petrophilum and Hypnum ambly- 

 phyllnm. Trelease. 



HowE, M. A., An enumeration of the Hepaticae collected 

 by R. S. Williams, 1898—189 9. (Bulletin of the 

 New-York Botanical Garden. II. p. 101 — 105. PI. 14. May 

 1901.) 



A report on 24 species from the Yukan region of British America 

 and Alaska Scapania inibricata is described and figured as new. 



Trelease. 



Britton, Elizabeth, G., Physcomitrium turbinatum and its 

 variations. (Journal of the New York Botanical Garden. II. 

 p. 72. May 1901.) 



The difference between the forms ascribed to differences 

 in temperature and moisture at the time of development. 



Trelease. 



HowE, M. A., Remarks on the use of Fiinarla hygrometrica 

 in botanical teaching. (Torreya. I. p. 39 — 41. April 

 1901.) 



Suggestions of demonstration manipulation. Trelease. 



