No. 1, Mat, 1921] PALEOBOTANY 71 



479. Meres CHKovsKY, C. On some new forms of lichens. Ann. and Mag. Nat. Hist. 6: 

 482-489. 1920. — The author gives a brief description in Latin followed by one in French of 

 the following forms of lichens: Physcia pulverulenta, formae delicata, turgidula, and elegantella , 

 and varieties lepidota, aquiloides, and angustata. Physcia virella, formae dendrilobata, and 

 dendrilohata subforma tenerrima. Physcia hispida, forma auriculata. Squamaria miiralis, 

 formae convexiuscula and granulata, and var. flexuosa. Parmelia conspersa, forma dispersa, 

 and varieties diffracta, digitulata forma intermedia, and isidiata forma heteroclyta. Anapty- 

 chia ciliaris, formae helianthus and suhmarginata. Cetraria hiascens, forma delicatula. 

 Caloplaca teicholyta, forma nivalis, Dermatocarpon aquaticum, var. nervosum. Biatora 

 kreyeri. — H. H. Clum. 



480. Paulson, Robert. Lichens found near Painswick. Trans. British Mycol. Soc. 6: 

 303-304. 1920. — A list is given of about 45 species of lichens collected near Painswick, Glouces- 

 tershire, during the Spring Foray of May, 1920, together with brief notes on habitat relations. 

 —W. B. McDougall. 



BACTERIA 



481. Anonymous. The rate of speed at which bacteria travel. Sci. Amer. 123:441. 

 1920. 



482. Wolf, F. A. A bacterial leafspot of velvet bean. Phytopath. 10: 73-80. 3 fig. 1920. 

 — A description of a hitherto undescribed leafspot disease of Florida velvet beans caused by 

 Aplanobacter stizolobii n. sp. — J. G. Dickson. 



MYXOMYCETES 



483. CuRRiE, Mary E. A critical study of the slime-molds of Ontario. Trans. Roy. 

 Canadian Inst. 12^: 247-308. PI. 8-10. 1920.— Of the 28 genera and 110 species and varie- 

 ties reported from Ontario, 47 species and varieties are here recorded from Ontario for the 

 first time, 36 of them being new to Canada. Three species and 1 variety are reported as new 

 to North America, viz., Badhamiafoliicola Lister, Diachaea bulbillosa Lister, Stemonitis fusca 

 Roth. var. confluens Lister, and Stemonitis flavogenita Jahn. The Plasmodia of 2 species 

 have been noted for the first time. Five forms have been observed parasitizing fungi and 9 

 have been found fruiting on, and in some cases causing injury to, the leaves or stems of her- 

 baceous plants. — R. B. Thomson. 



PALEOBOTANY AND EVOLUTIONARY HISTORY 



E. W. Berry, Editor 

 (See also in this issue Entries 704, 705) 



484. Anonymous. Contemporaneous evolution of warm-blooded animals and of flowering 

 plants. [Rev. of: Berry, E. W. Evolution of flowering plants and warm-blooded animals. 

 Amer. Jour. Sci. 49: 207-211. 1920.] Sci. Amer. Monthly 1: 558-559. 1920. 



485. Carpentier, Alfred. Sur quelques vegetaux silicifies des environs de Sainte- 

 Marie-aux-Mines [Alsace]. [On some silicified plant remains in the region of Sainte-Marie- 

 aux-Mines.] Compt. Rend. Acad. Sci. Paris 171: 250-252. 1920.— The rocks of this region 

 are found to contain roots of Psaronius, sporanges of Pteridotheca, petioles of Medullosa, 

 pollen of Cordaites and other gymnosperms, and leaves of the Cordaitales. — C. H. Farr. 



436. Clarke, J. M. The oldest of the forests. Sci. Monthly 12: 83-91. 6 fig. 1921.— 

 Devonian conditions were not favorable for preserving trees. But trees, mostly fern-like, 

 were not sparse and scattered. Until recently the richness of the Catskill hills in the relics 

 of the Devonian forests has not been realized. An expedition this year brought 5000 pounds 



