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BOTANICAL GAZETTE 



' ' List of parasitic fungi of Wisconsin," published in 1 9 1 2 . In these lists many 

 species are presented, either unreported before, more critically studied, or on 

 additional hosts, and 23 new species are described in the following genera: 

 Ascochyta (2), Cercospora (6), Cercosporella (4), Colletotrichum (2), Cylindro- 

 sporium, Diplodia, Fusarium, Phyllosticta, Ramularia (2), Septoria (3).— 

 J. M. C. 



Secretory tissues of Marattiaceae. — West 1 * has investigated the two 

 kinds of secretory tissues that characterize the Marattiaceae, namely the 

 mucilage canals and the cells or ducts containing tannin. He discovered 

 lysigenous mucilage canals in every genus and species examined. The tannin 

 cells are widely distributed through the tissues, occurring either as isolated 

 sacs or grouped together in series— J. M. C. 



Seeds of Ginkgo. — Miss Affourtit and Miss La Riviere 14 have dis- 

 covered considerable variation in the ribbing in the seeds of Ginkgo. They 

 have been described in general as having two ribs and occasionally three. A 

 large number of seeds from a single tree growing in a garden near Rotterdam 

 showed 2, 3, or 4 ribs, and also many gradual transitions.— J. M. C. 



Flora of New Guinea. — A new fascicle of the Dutch exploration of the 

 flora of New Guinea has appeared. 15 Previous parts have been reviewed in 

 this journal. 16 The fascicle consists of the beginning of a critical presentation 

 of the orchid flora by J. J. Smith. The present fascicle contains 152 species in 

 45 genera.— J. M. C. 



A fossil moss. — Lignier 1 ' has reported the discovery of a fossil moss from 

 the silex of Grand 'Croix, referred to the Stephanian, in which the structure 

 has been preserved with remarkable distinctness. The specimen is regarded 

 as representing a new species, which is named M ascites Bertra>idi.~J. M. C. 



Zygnemales .— Transeau 18 has made a study of Zygnemales, chiefly North 

 American. The 36 species presented are distributed among the 3 genera as 

 follows: Debarya, 3 species, 2 of which are new; Zygnema, 7 species, 1 of which 

 is new; Spirogyra, 26 species, 8 of which are new.— J. M. C. 



« West, Cyril, On the structure and development of the secretory tissues of the 



m Affourtit, Miss M. F. A., and La Riviere, Miss H. C. C, On the ribbing of 

 the seeds of Ginkgo. Ann. Botany 29:591-595. fig. 1. 1915. 



" Nova Guinea. R6sultats de 1'expSdition scientifique Neerlandaise a la Nouvelle- 

 Guin6e en 191 2 et 1913 sous les auspices de A. Franssen Herderschee. Vol. XII.' 

 Botanique. Livraison III. 4 to. pp. 173-272- ph. 55~99. Leide: E. J. Brill. 1915- 



*> Hut. < 



" LlGOTER, O., Sur une mousse houillere a structure conservee. Bull. Soc. Linn, 

 aandie VI. 7:128-131.^. I. 1914. 



18 Transeau, E. N., Notes on the Zygnemales. Ohio Jour. Sci. 16 : 17-3 1 - l 9 l S- 



