1908] CURRENT LITERATURE I5I 
Dyer. The third supplement appears under the direction of D. PRrary, the new 
director of the Kew Gardens. e supplement is a record of the remarkable 
activity in taxonomy during the five years covered, and critical judgment in 
reference to this great volume of work is becoming increasingly difficult. In fact, 
the list is a record of publication rather than an expression of opinion. For 
example, 476 acknowledged species of Crataegus are recorded for the five years, 
and Rubus is not far behind. To review such a work is impossible. It is only 
necessary to announce its appearance.—J. M. 
North American Flora.—The third part of volume 22 has just been issued. 
It contains Grossulariaceae by F. V. Covirte and N. L. Brirron, 43 species (2 
new) being referred to Ribes and 4o (4 new) to Grossularia; Platanaceae (6 spp.) 
y H. A. Grrason; Crossosomataceae (4 spp., 1 new) by J. H. Smarz; Connar- 
aceae (3 genera, g spp.) by N. L. Brrrron; Calycanthaceae (4 spp.) by C. L. 
Porrer; and the beginning of Rosaceae by P. A. RYDBERG, the key recognizing 18 
tribes, 6 of which are completed and the seventh (Potentilleae) begun. Among 
the 19 genera of Rosaceae presented, Horkeliella (3 spp.) is new; and 29 new 
species are described, being distributed among Opulaster (4), Spiraea (5), Petro- 
phytum, Aruncus (3), Chamaebatiaria, Lindleyella, Vauquelinia, Sericotheca 
(6), Horkelia (6), and Ivesia.—J. M. C. 
Marine algae of Sweden.—KvurN’ has published a monograph of the algal 
flora of the west coast of Sweden. The species of the four following groups are 
first presented: Chlorophyceae (12 fams., 26 gen., 71 spp.), Fucoideae (16 fams., 
5? geN., 105 spp.), Bangiales (5 gen., 11 spp.), Florideae (16 fams., 55 gen., 107 
spp.). One new genus (Acrothrix) of Fucoideae is described. The second part 
of the contribution (80 pp.) presents the ecological factors and analyses the 
Seographical distribution. At the conclusion of the discussion, the 105 species 
of Fucoideae and the 118 species of Florideae (incl. Bangiales) are distributed 
Into arctic, subarctic, boreal-arctic, cold-boreal, and warm-boreal groups. The 
Paper concludes with “biological” notes, a full bibliography, and an adequate 
index.—J. M. C. 
Das Pflanzenreich.’—Part 33 contains the g genera of Aloineae (Liliaceae) 
by A. BercEr, Chortolirion being a new genus with 4 species. Altogether, 370 
Species are presented, many of them with numerous cultivated forms and entering 
Into hybrids. The large genera are Aloe (178 spp., 14 new), Kniphofia (67 spp., 
? new), Haworthia (60 spp.), and Gasteria (43 spp.). : 
__ Part 34 contains the Sarraceniaceae by J. M. MACFARLANE, who gives an 
interesting account (in English) of the structure of the vegetative organs and the 
Sie 
‘Kyu, Haratp, Studien iiber die Algenflora der schwedischen Westkiiste. 
PP- 288. pis. 7, Upsala. 1907. (Inaugural dissertation. 
, s ENGLER, A., Das Pflanzenreich. Heft 33, Liliaceae-Asphodeloideae-Aloineae yon 
ERGER. pp. 347. figs. 141 (817). Mz17.60. Heft 34, Sarraceniaceae von 
ARLANE. pp. 39. figs. 10 (43). Mz2.40. Leipzig: Wilhemn Engelmann. 1908. 
