244 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
Conn., where it grows in great abundance with A. plantaginea , on 
the wooded slope of Mill Rock (A. W. Evans and M. L. Fernald). 
var. ambigens. Generally shorter than the two preceding: stems, 
stolons, and leaves less glandular: cauline leaves larger; leaves of 
the stolons arachnoid above, and with earlv deciduous tomentum 
beneath : involucral bracts as in var. arnoglossa. — A. arnoglossa 
var. ambigens Greene, 1. c., 320.—A puzzling form, in its pubescent 
leaves somewhat approaching A. plantaginea, but well distinguished 
by its brighter green color, larger, more crowded cauline leaves and 
the peculiar stipitate glands. Rather rare and only as a pistillate 
plant about Washington (E. L. Greene), but in both staminate and 
pistillate forms on river banks at Agricultural College, Mich. (C. F. 
Wheeler). In New England only pistillate plants are known, 
those from the following stations : Jaffrey, N. H. (E. L. Rand and 
B. L. Robinson), Wellesley, Mass. (J. M. Greenman, E. F. Williams 
and M. L. Fernald), Elmwood, Providence, R. I. (J. F. Collins and 
M. L. Fernald), New Haven, Conn. (D. C. Eaton). 
* * Basal leaves and those at the tips of the stolon small, 2 to 4 cm. long (in 
very luxuriant plants rarely 5 cm. long). 
% 
4- Basal leaves, or at least those at the tips of the assurgent stolons, differenti¬ 
ated into petioles and obovate or spatulate blades: heads loosely corymbose 
or by elongation of the stem becoming subracemose, the lower ones often 
on elongated pedicels. 
++ Leaves dull, invested above with nearly persistent white pubescence, only 
the oldest basal ones sometimes glabrate. 
A. neodioica Greene. Stems slender, 1.5 to 4 dm. high, 
invested with very flocculent white pubescence; stolons numerous, 
rather short, and very leafy: basal leaves distinctly mucronate, the 
oldest ones sometimes glabrate; cauline leaves lance-attenuate, 
small, rather remote : involucre of the pistillate plant 6 to 9 mm. 
high, the bracts with green or tawny bases and scarious tips, the 
outer short and obtuse, the inner lanceolate, acutish or blunt; 
“ bracts of the male involucre,” according to Professor Greene, 
“all very broad and obtuse, or truncate, or even emarginate.”— 
Pittonia, vol. 3, p. 184 and 280. — Apparently a common species 
on woodland knolls and banks or even in the crevices of dry 
ledges, flowering from late May to the middle of July. The fol¬ 
lowing New England specimens, all pistillate, have been referred 
here: Orono, Me. (M. L. Fernald), Mt. Desert Island, Me. (E. L. 
Rand), Franconia, N. II. (Edwin Faxon), Jaffrey, N.- H. (E. L. 
