No. 418.] . NOTES AND LITERATURE. 871 
Dr. Rydberg discusses the oaks of the continental divide north of 
"Mexico in No. 6 of the current volume of the Bulletin of the New 
Vork Botanical Garden. 
Vol. I of Kraenzlin's OrcAidacearum Genera et Species, devoted to 
the groups Apostasiex, Cypripediez, and Ophrydez, is completed 
with the 16th fascicle, the preface of which bears the date May, 
1901. The volume, though its titlepage bears the date 19or, has 
been in publication since 1897. 
‘An important article on the Texan home of Pinus Cubensis, by 
Professor Bray, appears in the Forester for June. 
The report of the society /s7s of Dresden for 1900 contains Parts I 
and II of a paper by Menzel on the gymnosperms of the North-Bohe- 
mian lignite formations, illustrated by a number of plates. 
To the rather numerous check lists of ferns and fern allies is added 
another by B. D. Gilbert, bearing the imprint of L. C. Childs & Son, 
‘Utica, N. Y., 1901. Unlike most such lists, this one, which includes 
438 numbers (species and varieties) which occur in North America 
above the Mexican line, contains a considerable number of critical 
notes and descriptions of new species. 
A study of the nectar glands of Pteridium aquilinum, by Professor 
Lloyd, is published in Science for June 7. 
A monograph of North American Sordariacez, by David Griffiths, 
constitutes the opening number of Vol. XI of the Memoirs of the 
Torrey Botanical Club. It is illustrated by 19 plates and several 
figures in the text, and contains a bibliography and index. 
Part III of Arthur and Holway’s “ Descriptions of American Uredi- 
nez," in No. 2 of the current volume of the Bulletin from the Labora- 
tories of Natural History of the State University of Lowa, deals with 
‘Tusts of several groups of grasses. 
From a short paper by Professor Burt, published in the Bulletin of 
the Torrey Botanical Club for May, Tremella mycetophila Pk. appears 
teferable to the genus Exobasidium. 
Professor Atkinson, in Bulletin 193 of the Cornell University Exper i- 
ment Station, gives an account óf several of the fungi which attack 
the wood of shade and timber trees, — a subject heretofore investi- 
gated in this country by Dudley and von Schrenk. 
The Manchester Literary and Philosophical Society, in a recent 
number of its Memoirs and Proceedings, prints an interesting lecture 
9n the flora of the human body by Dr. Metchnikoff. 
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