350 BOTANICAL GAZETTE [ocroBER 
Himalayan vegetation—Among the matters of botanical interest 
STEWART has emphasized is the absence of all luxuriant tropical vegeta- 
tion from this part of India, the indigenous flora being rather of the desert 
and scrub types. Perhaps the most interesting thing concerning this little 
known region is the similarity of the forests on the north side of the 
mountains to those of the eastern United a as shown by the abundance 
of trees of such familiar genera as Pinus, a, Abies, Taxus, Juglans, 
Betula, Ulmus, Prunus, Acer, Quercus, Populus, aa Berberis. Set in strong 
contrast are the most abundant genera upon the corresponding southern 
slopes. This aggregation includes Acacia, Capparis, Tamarix, Zizyphus, 
Melia, Albizzia, and Olea.—Gro. D. FuLiEr. 
corrhiza of Marattiaceae.—West® has made a careful study of the life 
history, host relations, and systematic position of a fungus long known to be 
present in the roots of the Marattiaceae. It is one of the Phycomycetes, and 
most nearly approaches Phytophthora in such characters as are available, but 
sexual organs were not observed. West has established a new genus 
(Stgasporium to include it. No injury to the cells of infected roots by the 
parasite could be recognized, and the resting spores, with their oily contents, 
are also formed at the expense of the host. ‘‘The advantage of the association 
is almost entirely on the side of the fungus, the host plant thriving in spite of 
the presence of the endophyte.”’—J. M. C 
Cambium in monocotyledons.—Mrs. ArBER‘ has brought together the 
i oe Bate 2 red gin f£ 1 ele c Ld 1 hiwm 
in monocotyledons, and records also some new observations. It is clear that 
such a cambium occurs more widely among monocotyledons than has been 
generally supposed. To the previously recorded cases she adds the inflores- 
cence axes of Eremurus himalaicus and Nothoscordum fragrans, and the young 
shoots of Asparagus officinalis. The widespread occurrence of this ‘vestigial, 
intrafascicular cambium” is a strong additional argument in favor of the 
derivation of monocotyledons from dicotyledons.—J. M. C. 
Seedling anatomy of Ranales.—Miss BLAcKBURN*® has investigated the 
seedling anatomy of a large number of the Ranales, chief attention being given 
to the Ranunculaceae. The results of chief phylogenetic interest are the 
43 STEWART, RALPH R. 93 observations on the flora of northwest Himalaya. 
Torreya 15:21 gabe. Jigs. ‘ 
#® Wrst Cyrit On Meas Marattiacearum and the mycorrhiza of the 
Marattiaceae. Ann. Botany 31:77-99. pl. 3. figs. 9. 1917- 
47 ARBER, AGNES, On the occurrence of intrafascicular cambium in monocoty- 
ledons. Ann. Botany 31:41-45. figs. 3. 1917. 
# BLACKBURN, KaTHLeeN B., On the vascular anatomy of the young epicotyl 
in some Ranalean forms. Ann. Botany 31:151-180. pl. 13. figs. 19. 1917- 
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