1888. | BOTANICAL GAZETTE. 71 
Mr. JAMEs M Macovn will botanize next summer along the shores 
of James bay and the east coast of Hudson bay. As considerable diffi- 
culty is experienced in drying specimens, he only collects those required 
for the use of the Canadian Geological and Natural History Survey. 
very kindly offers, however, to collect material for specialists working up 
any group of plants, and without any charge. He may be addressed at 
Ottawa, Canada. 
THE FEBRUARY meeting of the botanical section of the Biological 
Society of Washington, D. ©., presented the fol owing programme: 
Notes on the Lake Superior flora, Dr. George Vasey; A visit to a fossil 
ae Prof. F. H. Know 
orange, Mr. C. L. Hopkins 
THE Gardeners’ Chronicle (February 11) gives an illustration of Psiadia 
rotundifolia, a composite, styling it “the las its race.” It isa tree 
about twenty feet high, standing in a broad, open space near the entrance 
gates of the famous Longwood, St. Helena. It is actually the last living 
representative of the genus.- It is a rare thing to see even the photo- 
graph of the last individual of a species. Kew has herbarium specimens, 
nd has succeeded in germinating seed 
_, DR. M. Montus has recently published a paper in Pringsheim’s Jahr- 
biicher, also distributed separately, on the anatomical structure of orchid 
leaves as furnishing characters for classification. He finds that, as in the 
case of the leaves of grasses and conifers and the fruit of baa es 
i oun 
thirty-seven of which are marked as new species. The Agaricinian 
oe of Pleurotus, Claudopus and Crepidotus found in the state, num- 
ee thirty-one in all, including two new species, are described in full, 
notes. 
ras | + 
ea SEs 7 iti value of mush- 
rooms. They are commonly ranked with meat, but a recent German 
Writer states that it takes sie pounds of the common mushroom to ea 
¢ Pound of beef. The matter has been investigated by Mr. E. F. 
ie BY. Aortic. Exp. Station, 1887, p. 464), who finds that mushrooms 
-84tlcus campestris) gathered from a pasture at Geneva, N. Y., ap 
bmg } per cent. of digestible albuminoids, and puff balls (Ly bia a 
S'ganteus) from 70 to 80 per cent., according to maturity. He concludes 
t they compare favorably in nutritive value with meat. 
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