ELISHA MITCHELL SCIENTIFIC SOCIETY. ae 
needle like crystals strongly colored with iodine and very 
hygroscopic. Every attempt failed at getting these 
freed from excess of iodine and properly dried. Wash- 
ing with ether or with carbon bisulphide was ineffective. 
A hydrogele was gotten by acting upon zirconium hy- 
droxide with hydrogen iodide which formed on drying a 
hard horn-like, slightly colored mass, insoluble in water 
and acids. ‘This contained 
Zr 32.14 To oe H,O(by difference) 28.64 
It lost only 11.07 per cent. of its weight after three 
hours heating at 100—120°. 
THE GLABROUS-LEAVED SPECIES OF 
ASARUM OF THE SOUTHERN 
UNITED STATES.* 
W. W. ASHE. 
The following notes on the glabrous-leaved group of 
the genus Asarum are based on a field study of the genus 
*While this paper was intended for this JOURNAL its earlier publica- 
tion as a separate with no credit to this JOURNAL has rendered a few 
changes necessary in regard to the glabrous-leaved group, while the 
references to the Canadense group have been entirely omitted since 
Mr. E. P. Bicknell is at present working on this group. 
Since this article was put in type I have received a letter from Mr. E. 
G. Baker, of the Kew Gardens, in reply to one I wrote him, which may 
throw some additional light on the identity of the Linnean Asarum 
Virginicum. A comparison of my plants with the Gronovian specimen 
in the British Museum, on which the Linnean species is based, was 
made for me by Mr. Baker. It showed that the Gronovian specimen 
was more like 4. minus, but was a smaller plant than that and with a 
smaller flower. There isan Asaruwim found in the coastal region of 
North Carolina belonging to this group, and having smaller leaves 
than any of the Appalachian species, but I have not yet been able to 
secure flowers from it. It is possible that it may approach in the size 
and shape of the calyx more closely to the Gronovian specimen than 
does A. minus; but this is mere speculation, so that for the present it is 
probably better to regard A. minus Ashe as A. Virginicum L. 
