396 BOTANICAL GAZETTE [NOVEMBER 
in which four species hitherto unrecorded for the state were discovered (Andro- 
meda polifolia, Kalmia glauca, Eriophorum vaginatum, Arceuthobium pusillum). 
The black spruce is more abundant than elsewhere in the state. Obviously this 
is a relict vegetation, and it is interesting to know that ice remains in this bog 
until late in May. The Andromeda was in full bloom, while the stems were 
yet imbedded in thick ice, a condition surely reminding one of the far north. 
—H. C. Cow tes. 
AN INSTRUCTIVE ECOLOGICAL STUDY of the giant cactus has been made by 
Mrs. SPALDING.49 It is found that changes in bulk due to varying amounts 
of stored water are accompanied by circumferential stem changes accomplished 
by a bellows-like action of the ribs, which draw closer together as the circum- 
ference decreases, and move farther apart as it increases. Variations in cir- 
cumference are least pronounced at the base and top; and differences are shown 
between the north and south sides. These changes in no way impair the mechani- 
cal system.—H. C. Cow Les. 
BLANKINSHIPS° has published an historical account of botanical work in 
Montana. The frontispiece is an elegant colored plate of Lewisia rediviva. 
The accounts of collecting expeditions are arranged chronologically, and the 
bibliography of titles dealing with the state flora, arranged mje will 
be very helpful to students of the vegetation of that region. BLANKIN st has 
also published a supplement to RypBERG’s Montana flora, and in ee 
with H. F. HENSHALLS? aie has prepared a list of the common names of Montana 
plants.—H. C. Cow 
BULLERSS has obtained some interesting data from the study of a single- 
gilled fungus whose saprophytism destroys paving blocks. When grown in light 
or in darkness papillae protrude which in the former case develop pilei but in 
the latter do not. The papillae remain rectipetal and indifferent to geotropic 
stimuli until exposed to light, when they become negatively geotropic and posi: 
tively heliotropic. The latter sensitiveness is lost, however, during the formation 
of the pileus, which is dependent upon sufficient illumination—RayMoNP onp H. 
Ponp. 
49 SPALDING, EFFIe S., Mechanical adjustment of the suaharo (Cereus eee 
teus) to varying quantities of stored water. Bull. Torr. Bot. Club 32: 57-68. 1995: 
5° BLANKINSHIP, J. W., ntury of botanical exploration in Montana, eA 
— collectors, herbaria, at Sdidisgeanky. Mont. Agric. Coll. Sci. Studies 1:3-3* 
9°5- 
corrections. Ibid. 
Be , Supplement to the flora of Montana: additions and 
1233-109. 1905. ne 
s? BLANKINSHIP, J. W., and HENSHALL, H. F., Common names of 0 
plants. Ibid. 1:113-139. 1905. 
nus lepideus Fr. 
53 BULLER, A. H., R. The reactions of the fruit-bodies of Lenti 
to external stimuli. Annals of Bot. 19:427-436. figs. 30- 19°5- 
