1906] CURRENT LITERATURE 497 
Ustilaginales of the North American Flora.—Another part of the North 
American Flora has appeared, containing the Ustilaginales by Ctinron.2 The 
changes from a former monograph? by the same author are mostly such as adapt 
the monograph to the style of the Flora. The older European synonomy, the 
list of species showing general distribution, and the extensive bibliography of the 
former publication are omitte he omission of the general notes relating to 
the genera and species is a dint nct disadvantage. It takes away from the des- 
its description far more readily than do the technical dia s. The host 
index in its present alphabetical arrangement of hosts, with se references to 
the parasites, represents a marked improvement over the former arrangement. 
Artificial keys for the determination of species have been added eee: the genera. 
—H. HAsseprinc. 
Index Filicum.—This work is completed by the twelfth fascicle'®, which 
concludes the catalogue of literature, and also includes a systematic enumeration 
of the genera. It appears that 23,499 names are cited, but that only 149 generic 
mames and 5940 specific names stand. It is interesting to note that these species 
h 
Ophioglossaceae 78. This sequence of families is that used 
by the author. The parts have appeared with most commendable promptness, 
and the completed volume will be a most useful one.—J. M. C 
Trees of the Amazon region.—HvBER has issued the third and fourth decades 
of his Arboretum Amazonicum,* the first two parts having appeared in 1900.’ 
The superb quality of the plates is maintained, and, as before, each plate is 
accompanied by at least a page of descriptive text in Spanish and French in 
parallel columns. There are habit studies of different palms, legumes, etc., 
views of different types of savannas, characteristic river-bank vegetation, forest 
interiors, effect of wind on trees, etc. These glimpses of tropical plants and 
plant formations are among the very finest that have been published.—J. M. C 
8 Ciinton, G. P., Ustilaginales. North American Flora 7: part 1. pp. 82. 
October 4, 1906. 
orth American Ustilaginaeae. Proc. Boston Soc. Nat. Hist. 31:329-529. 
1904. Reviewed in Bor. GAZETTE 39:314- 1905. 
to CHRISTENSEN, C., Index Filicum, etc., Fasc. 12. Copenhagen.: H. Hagerup. 
1906, 35. 6d. 
tt HuBER, J., Arboretum Amazonicum. oe desplantes Soe gn et 
cultivées les plus importantes de la région Amazonienne. Decades 3 and 4. 4to. 
Para. 1906. Each decade ro fr. 
™2 Bor. GAZETTE 33:72. 1902. 
