248 BOTANICAL GAZETTE [SEPTEMBER 
“monoplastic; each sperm receives one plastid. SAPEHIN claims that the bodies 
described by ALLEN, in the spermatogenesis of Polytrichum, as blepharoplasts, 
are nothing but plastids. Since SapEHIN’s account is not illustrated, one 
must feel rather skeptical in regard to his interpretation of ALLEN’s work. 
—CHARLES J. CHAMBERLAIN. 
Botrychium Lunaria.—Lanc* has published the first of a series of papers on 
the vascular anatomy of the Ophioglossaceae. From examination of Botrychiwm 
Lunaria he concludes that the internal endodermis is a new formation without 
morphological significance. The occurrence of occasional tracheids in the pith, 
especially in injured plants, is accepted as conclusive evidence of the stelar nature 
of the pith. These scattered tracheids are primary in their origin and by reason 
of their position are identified as centripetal xylem; hence this species of Botry- 
chium has mesarch stem structure. 
Axillary buds are of constant occurrence in this species, as in Helmintho- 
stachys. These develop only in case of injury to the terminal bud. The vascular 
supply of the branch arises from the trace of the leaf immediately below by the 
development of adaxial xylem; occasionally the xylem of the branch may be 
connected directly with that of the main stem.—L. C. Petry. 
Lichens of the Galapagos Islands.—Srewart* has reported on the lichens 
collected by the expedition of the California Academy of Sciences to the Galapagos 
Islands in 1905-1906. These islands have long been of great biological interest, 
so that any collection from them promises to be worth noting. The list numbers 
47 species, 7 of which are undetermined. The genera represented are as follows: 
Alectoria (x sp.), Arthonia (4 spp.), Buellia (2 spp.), Chiodecton (1 sp.), Cladonia 
(6 spp.), Coenogonium (x sp.), Lecanora (3 spp.), Lecidea (1 sp.), Pannaria (x sp-); 
Parmelia (4 spp.), Pertusaria (2 spp.), Physcia (2 spp.), Placodium (1 sp.), Pyre- 
nula (x sp.), Ramalina (5 spp.), Rinodina (x sp.), Roccella (2 spp.), Sticta (2 spp-), 
Teloschistes (1 sp.), Usnea (4 spp.), Verrucaria (1 sp.).—J. M. C. 
Plants of northwestern Canada.—SranpiEvs has determined the plants 
collected by an expedition to the Mount Robson region of eastern British Colum- 
bia and western Alberta in rgtr, under the auspices of the Alpine Club, whose 
headquar ters are at Banff, Alberta. The collection includes about 200 numbers, 
_ all of which are angiosperms except 5 mosses, 6 pteridophytes, and 3 gymnosperms. 
A new species was discovered in each of the following genera: Carex, Vagnera, 
Artemisia, Aster, Gaillardia,—J. M. C. 

* Lane, Wittiam H., Studies in the morphology and anatomy of the Ophioglos- 
saceae. TI. On the branching of Botrychium Lunaria, with notes on the anatomy of 
young and old rhizomes. Ann. Botany 27: 203-242. figs. 1-14. pls. 20-21. 1913- 
» STEWART, ALBAN, Notes on the lichens of th - 
: ; e Galapagos Islands. Proc. 
Acad. Sci. IV. 13431-446. 1912. 
- STANDLEY, Paut C -, Plants of the Alpine Club expedition to the Mount Robson 
region. Canadian Alpine Journal, special number, pp. 76-97. 1912. 
