132 Rhodora [JULY 
glandular-viscid, with a thin obtusish cream-colored or rose-tinged tip; 
interior narrower, acutish.— QuEBEC: limestone and limestone-con- 
glomerate ridges from Point aux Corbeaux to Cap Caribou, Bic, 
July 8, 1907, Fernald & Collins, no. 1195 (TYPE in Gray Herb.). 
Some material of A. subviscosa was distributed as A. neodioica, var. 
gaspensis Fernald; but that plant has a prominent mucro at the tip 
of the rosette-leaves, the upper cauline leaves with a more scarious tip 
and not at all glandular, and the glandless involucre 8-10 mm. high, 
with the very thin bracts linear or linear-attenuate and never tinged 
with pink. A. subviscosa is nearest related to the western A. rosea 
(Eaton) Greene and A. microphylla Rydberg, from both of which it is 
quickly distinguished by the glandularity of its upper leaves and in- 
florescence; its usually fewer heads, with broader and fewer bracts : 
and its ordinarily fewer cauline leaves, with less pronounced scarious 
tip. At Bic it was found on a cold north-facing limestone wall, where 
it was associated with several other localized species: Carex concinna R. 
Br., Draba hirta L., Arabis Holboellii Hornem., Potentilla nivea L., etc. 
A. CANADENSIS Greene, var. spathulata, n. var., formae typicae 
habitu statura, ete. similis; foliis basilaribus cuneato-spathulatis vix 
petiolatis apice rotundatis 1-2.3 cm. longis 4-9 mm. latis; capitulis 
paucis; bracteis lineari-oblongis apice albescente. 
Similar to the typical form in habit, stature, etc., but with the basal 
leaves cuneate-spatulate, scarcely petioled, rounded at summit, 1-2.3 
em. long, 4-9 mm. broad: heads few: bracts linear-oblong, with 
whitish tip.— NEWFOUNDLAND: rocky bed of South Arm River, Holy- 
rood, August 23, 1894, Robinson & Schrenk; sandstone ridges and 
banks, Rushy Pond, August 11, 1911, Fernald, Wiegand & Darlington, 
no. 6362 (rypE in Gray Herb.); damp talus of limestone sea-cliffs, 
Pointe Riche, August 4, 1910, Fernald, Wiegand & Kittredge, no. 4143. 
In A. canadensis of Canada and the northeastern states, the basal 
leaves are of an oblanceolate or narrowly obovate outline, pointed at 
tip, and constricted below to a petiolar base. All three collections of 
A. canadensis from Newfoundland, from three remote districts, are 
uniformly different from the true form of the species in the outline of the 
basal leaves and seem to represent a well-defined geographic variety. 
A. NEODIOICA Greene, var. rupicola (Fernald), n. comb. A. rupicola 
Fernald, Ruopora, i. 74 (1899). 
In its best development A. rupicola is distinguished from A. neo- 
dioica by its much narrower basal leaves, the more numerous and 
greener cauline leaves, and the heavier or firmer cream-colored or 
