98 Rhodora [May 
the denuded receptacle 20-30, 0.8-0.4 mm. broad, much broader than 
the intermediate ridges. 
Three varieties with us: 
Flowering stems 2-12 em. high, with 4-9 leaves: heads (when 
more than 1) in a close corymb or glomerule. 
Rosette-leaves green and glabrous above.................. Var. typica. 
Rosette-leaves canescent-tomentose above............... Var. canescens. 
Flowering stems elongating to 2-2.3 dm., with 9-13 leaves: ro- 
sette-leaves green and glabrous above: heads 1-2, the lower 
(when present) on a pedicel 1-1.5 em. long .......... Var. ungavensis. 
Var. typica. Gnaphalium alpinum L. Sp. Pl. ii. 856 (1753). A. 
alpina (L.) Gaertn. Fruct. ii. 410 (1791).—Arctic America, south to 
Kangalaksiorvik Bay, Labrador (Owen Bryant) and mountains of 
British Columbia; also northern Eurasia. Fl. July-September. 
Var. CANESCENS Lange, Fl. Dan. xvi. (fasc. xlvii.) 9, t. 2786, fig. 1 
(1869); Fernald, Rnopona, xviii. 237 (1916). A. angustata Greene, 
Pittonia, iii. 284 (1898). Var. cana Fernald & Wiegand, RHODORA, 
xiii. 24 (1911), in part.—The commoner extreme in eastern America, 
extending south to Port Manvers, Labrador (Delabarre). 
Var. UNGAVENSIS Fernald, Ruopora, xviii. 238 (1916).—Known 
only from the type-region, Stillwater River, Ungava District. 
2. A. SonNBORGERI Fernald. Fic. 2. Humifuse, with trailing 
subligneous branches up to 1 dm. long: stolons very short and crowded: 
rosette-leaves oblanceolate, 6-12 mm. long, 1.5-2 mm. wide, narrowed 
at summit to the short-mucronate tip, canescent-pannose: flowering 
stem stiffly erect, 0.4-1.1 dm. high: cauline leaves rather crowded, 
9-12, linear, 5-15 mm. long, 0.5-1.5 mm. wide; the upper with villous 
lanceolate scarious tips: pistillate heads 1-3, sessile, campanulate: 
involucre 6-7 cm. high, lanate at base: bracts about 3-seriate, sub- 
equal; the outer lanceolate, brown; the inner linear-attenuate, 
yellowish-brown, erose-serrulate: corollas 8.5-4 mm. long: longer 
pappus-bristles 4-5.5 mm. long: achenes glabrous, 1.2-1.4 mm. long: 
pits of the denuded receptacle 60-100, 0.1 mm. broad, about as wide as 
the blunt-edged intermediate ridges.—Rnopona, xviii. 237 (1916).— 
Rama, LABRADOR (J. D. Sornborger). Fl. August. 
3. A. CANA (Fernald & Wiegand) Fernald. Fic. 3. Humifuse, the 
crowded leafy stolons very short (up to 2 cm. long): rosette-leaves 
narrowly cuneate-obovate or broadly oblanceolate, obtuse, not mucro- 
nate, broad-based, 3-11 mm. long, 2-5 mm. broad, white above with 
dense minute tomentum: flowering stems 2.5-12 cm. high, slender: 
cauline leaves 9-15, rather crowded, linear; the lower 8-15 mm. long, 
1-2 mm. broad, subulate-tipped; the median and upper subu ate- 
tipped; only the uppermost with a lanceolate scarious tip: pistillate 
heads (1—)2-6, campanulate, corymbose, on pedicels up to 1 cm. 
long: involucres 5-7 mm. high, lanate at base: bracts 3-seriate, 
subequal, very thin; the outer oblong, brown; the inner lanceolate, 
tawny, slightly fimbriate: corollas 3.5-4 mm. long: longest pappus 
