1904] CURRENT LITERATURE 155 
(40 pp.), printed in German, French, and English. Then follows the alpha- 
betical list of approved genera (612 pp.) with their synonyms, fossil genera, 
and such cryptogamic generic names as needed change being included. A 
closing part (100 pp.) gives the list of valid genera under their families, 
which may serve also for herbarium arrangement. For twenty years Dr. 
Kuntze has been working at nomenclature, always confident of his ground, 
never discouraged by opposition or indifference, as ready now to force his 
views upon botanists as ever. His general attitude is indicated in the follow- 
ing quotation from the preface: ‘ May our lexicon reestablish international 
order in nomenclature and reasonable harmony between botanists! There 
seems no other remedy.” The present publication certainly contains a mass 
of information conveniently arranged.—J. M. 
IN A PAPER on Tertiary plants, D. P. Penhallow® has recorded the 
results of his studies of a collection of fossil woods secured by Dr. G. M. 
Dawson during the British N. Am. Boundary Survey. The determinations 
are based upon stem structure, and include new species of Sequoia, Cupres- 
soxylon, and Rhamnacinium. A section of the paper entitled ‘biological 
considerations” discusses spiral tracheids, uniseriate rays, resin cells and 
passages, ray tracheids, and fusiform rays. The interesting statements are 
made that the occurrence of resin passages in Abies has not been traced 
beyond existing species, and that in reference to certain characters Sequoia 
represents a transitional group and also the terminal member of a short side 
line which passes through Taxodium.— J. M. C 
THE EIGHTEENTH PART of Engler’s Das Pflanzenreich includes a pres- 
entation of Taxaceae by R. Pilger.6 The usual full and critical discussion 
of the group involves in this case many mooted points of great interest to 
the morphologist. In addition to the eight genera that ordinarily appear 
under Taxaceae the author recognizes two others: Pherosphaera Archer, a 
genus of 1850 that includes two species usually referred to Microcachrys and 
Dacrydium ; and Acmopyle Pilger, nov. gen., a New Caledonian genus estab- 
lished to include a species variously referred to Podocarpus and Dacrydium. 
THE THIRD PART of Sargent’s Zrees and shrubs’ contains plates and 
descriptive text of species of Magnolia, Liriodendron, Crataegus (8, 6 n.spp.), 
Tilia, Euonymus (4,1 n.sp.), Acer (2). Virburnum (n.sp.), Lonicera (2), Ligus- 
5 PENHALLOw, D. P., Notes on Tertiary plants. Trans. Roy. Soc. Canada II. 
9: 33-95. 1903. 
6 ENGLER, A., Das Pflanzenreich. 
Leipzig: Wilhelm Engelmann. 1903. Af 6.20. 
7SARGENT, CHARLES SPRAGUE, Trees and shrubs. [Illustrations of new or 
little known ligneous plants prepared chiefly from material at the Arnold Arboretum 
of Harvard University. Part III. pp. 101-150. is. 57-75. Boston and New York: 
Houghton, Mifflin & Company. 1903. — 
Heft 18. Taxaceae von R. Pilger. pp. 124. 
