ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 755 



Peglion, Vittorio — Intorno alia carie del frumento. (Concerning smut of 

 wheat.) 



[Notes on infection of wheat by Tilletia lcvis.~\ 



Atti Reale Accad. Lined, cccvii. (1910) pp. 216-20. 



S vdow, H. & P. — Fungi Philippenses. 



[List of species from the Philippine Islands.] 



Phil. Journ. Sci., v. (1910) pp. 163-6. 

 Theiszen, F. — Fragmenta brasilica. III. 



[Diagnoses are given of many species from Brazil, a number of them new.] 



Ann. Mycol., viii. (1910) pp. 452-63 (6 figs.). 



Wheldon, Harold J.— A Contribution to the Manx Fungus-flora. 

 [A list of species, with localities.] 



Lancashire Naturalist, ii. (1909) pp. 195-9. 



Lichens. 

 (By A. Lorrain Smith.) 



Study of the Lichens of Dunkerque.* — M. Bouly de Lesdain has 

 made an exhaustive study of the Lichen flora of the Dunkerque region. 

 He gives the species that are to be found on the various shore elevations 

 below and above high-water mark, and those that grow on the dunes 

 along with other Cryptogams and higher plants with which they are 

 associated. He also gives the trees of the region and the lichens he has 

 found growing on them. The latter part of the book includes a full 

 descriptive list of the genera and species and a list of fungi parasitic on 

 the lichens. 



Variation of Gonidia in the Genus Solorina. | — Hue finds two 

 types of gonidia in Solorina, belonging respectively to the Phyco- 

 chrornaceas (S. simensis, S. sorediifera, etc.) and Chlorophyce^e (S. saccata, 

 S. spongiosa, etc.) In the latter group he finds colonies of Nostoc form- 

 ing endogenous cephalodia which are looked on as thalli adventitious to 

 the principal thallus. In Solorina crocea he finds at the base of the 

 cortex a band of small gonidia (Chlorophycese) of irregular growth, 

 rising in pyramids towards the upper surface ; beneath this layer other 

 gonidia (Nostocacese) forming glomerula, and finally an uninterrupted 

 layer. These two zones are usually separated by a layer of hyphre, but 

 occasionally they are in contact and both may be present in the apothe- 

 cium. Specimens of S. crocea do not differ in structure no matter where 

 collected. Hue considers that both types of gonidia aid in the nutrition 

 of the lichen. In S. spongiosa and 8. bispora he finds attached to 

 the normal thallus small scales containing Nostoc and forming sub- 

 sidiary homoiomeros thalli ; they rise above the normal thallus in the form 

 of small scales, and this growth is further aided by the germination of 

 Solorina spores which produce hyphse among which may be seen colonies 

 of Nostoc. These scales are cephalodia and Hue proposes for them the 

 title of " thalliform," rather than pseudocephalodia, the name given to 

 them by Forssell. 



Epiphytic Lichens. J — Hans Fitting has studied the epiphytic 

 lichen Mycoidea parasitica on leaves in Java. It is preceded on the leaf 



* Recherches sur les Lichens des environs de Dunkerque. Publication de la 

 Societe Dunkerquoise, 301 pp. (4 pis.) 



t Comptes Rendus. cli. (1910) pp. 332-4. 



% Ann. Jard. Bot. Buitenzorg, suppl. 3, pt. 2 (1910) pp. 505-18. See also 

 Bot. Zeit. lxviii. (1910) pp. 198-9. 



