268 Lichenes. — Bryophyten. — Floristik etc. 



(sect. Euopegrapha) quinqueseptula , Eiiterostigma Skottshevgi, Dirina 

 falklandica mit var. corticola, Leptoginni (sect. Mellotiuni) patagoni- 

 cum, Pannavia fuegiensis, Bacidia (sect. Euhacidia) sclerocarpa, 

 Pertusaria corrugata f. phacinans, Pertusaria cerebvimila , Lecanora 

 (sect. Eulecanorä) subelata, Lecanora (sect. Placodium) strambieocar- 

 nea, Lecanora (sect. Placopsis) patagonica , Parmelia cincinnata var. 

 alhida, Parmelia (sect. Menegarria) dispora var. Alboffi., Parmelia 

 {Hypotrachyna) ushuaiensis, Parmelia {Amphigymnia) piloselloides, 

 Cetraria (sect. Platysma) antarctica, Usnea sulphurea var. normalis 

 f. activa und. var. spadicea, Siphula ohtusula, Siphula aquatica, 

 Blastenia ferdinandesiana, Blastenia austro-shetlandica , Caloplaca 

 (sect. Gasparrinia) subdimorpha mit var. leprascens, Caloplaca (sect. 

 Gasparrinia) lucens var. striolata, Xanthoria parietina var. aitstralis, 

 Buellia Skottsbergii, Buellia subviolascens , Buellia fernandesiana , Ri- 

 nodina {Orcularia) philomelensis und Anaptychia magellanica. 



Ferner wird eine Reihe von Arten neubeschrieben, vielfach 

 auf Grund der Originalexemplare; diesbezüglich, ebenso was Um- 

 taufungen anbelangt sei auf die Arbeit selbst verwiesen. Den Schluss 

 der Studie bildet eine Zusammenstellung der Flechten der Falk- 

 landinseln. Zahlbruckner (Wien). 



Woodbupn, W. L., Spermatogenesis in Mnium affine, var, 

 ciliaris (Grev.), C. M. (Ann. Bot. XXIX. p. 441—456. 1 pl. 1915.) 



The more important results of the author's work are concerned 

 with the origin and development of the blepharoplast. This organ 

 first appears apparently as a cytoplasmic differentiation in the an- 

 drocyte. It develops as a more or less radially flattened band, clo- 

 sely applied to the plasma membrane. The nucleus becomes closely 

 applied to the blepharoplast, becomes homogeneous in appearance 

 an lengthens parallel with the blepharoplast. There are indications 

 of a certain amount of diffusion between nucleus and cytoplasm. 

 Eventually the blepharoplast and nucleus fuse and become indistin- 

 guishable. A vesicle, enclosed within the coiled body of the sperm 

 and containing cytoplasm and probably some nuclear material, dis- 

 appears as the sperm approaches maturity. The mature sperm is 

 long and slender, almost filiform, with two cilia attached to the 

 forward extremity of the blepharoplast. 



Agnes Arber (Cambridge). 



Macbride, J. F., Further notes on the Boraginaceae. {Contr. 

 Gray Herb. N. S. 49. p. 17—22. July 25, 1917.) 



Contains as new: Cordia Brittoni {Varronia Brittoni Millsp.), C. 

 imparilis, Mertensia Eastwoodae {M. alaskana Eastw.), Myosotis lutea 

 versicolor {31. arvensis versicolor Pers.), Onosmodium discolor {Ma- 

 cromeria discolor Benth.), 0. Pringlei {M. Pringlei Greenm.), O. 

 longißorum {M. longißora D. Don), O. longiflorian hispidum {M, 

 hispida Mart. & Gal.), O. unicum, O. revolutum {Lithospermum revo- 

 lutum Rob.), Macromeria exserta imparata and Lithospermum cher- 

 stnum. Trelease. 



Macbride, J. F., Notes on ihe Hydrophyllaceae and a few 

 other North American Spermatophytes. (Contr. Gray 

 Herb N. S. 49. p. 23—59. July 25, 1917.) 



Contains as new: Hydrophyllum Fendleri albifrons (H. albifrons 



