110 Rhodora l [JUNE 
ton and Jamaica Plain. He says, “ It is the common round pignut 
with sweet meat and grows everywhere around Boston, as I under- 
stand it.” 
In Trees and Shrubs by C. S. Sargent, Vol. II, Part IV, page 208, 
August, 1913, is the following note, “ CARYA OVALIS, var. OBCORDATA, 
n. var. .... Carya microcarpa, Nuttall, Gen. ii. 221 (in part) (1818). 
.... This is the most widely and probably the most generally dis- 
tributed variety. It is common in southern New England.... 
The fruit varies from subglobose to short oblong or to slightly obo- 
vate.... The nut is usually much compressed, often broadest 
above the middle, slightly angled sometimes to below the middle, 
rounded at the base and rounded and often more or less obcordate at 
the apex." 
C. ovata (Mill.) K. Koch (C. alba Nutt). Dry open woods, com- 
mon throughout. 
In the paper cited above, on page 207, Prof. Sargent publishes the 
following variety, “ CARYA ovata, var. NuTTALLI, n. var. Carya 
microcarpa, Nuttall, Silva N. Am. i. 39, t. 13 (not Carya microcarpa, 
Nuttall, Gen. ii. 221) (1842).... 
“The nut of this variety is rounded, obcordate or rarely pointed at 
the apex, rounded or abruptly pointed at the base, much compressed, 
prominently angled.... Except in the size of the fruit there appear 
to be no characters by which this variety can be distinguished from 
the common Shagbark. I have seen specimens of the variety from 
eastern Massachusetts . . . ." 
Swampscott (J. G. Jack, September, 1894). 
JUGLANS. 
J. cinerea L. Roadsides and open woods; common in north and 
central sections, but not reported from extreme south. 
BET ULACEAE. 
ALNUS. 
A. incana (L.) Moench. Borders of streams and swamps; Sharon, 
Canton and Hingham northward. 
A. rugosa Du Roi. Swamps and borders of streams; very com- 
mon southward, less common northward. 
