104 Rhodora [May 
lanceolate: stems viscid-villous at base: involu- 
cral bracts linear- to lance-attenuate, 1.2-1.5 em. 
long, uniformly viscid-villous: ligules with acutish 
lobes 3-5 mm. long...................... 4. A. Sornborgeri. 
c. Lower leaves regularly dentate g. 
g. Disk-corollas 6-8 mm. long, with glabrous or only 
sparingly setose lobes; the densely pilose portion 
of the tube and throat 3.5-6 mm. long: mature 
pappus 5-8 mm. long, bright-white........... 5. A. chionopappa. 
g. Disk-corollas 9-10 mm. long, with copiously setose 
lobes; the densely pilose portion of the tube and 
throat 7-9 mm. long: mature pappus 9-10 mm. 
long, ereamy-white............................ 6. A. gaspensis. 
b. Achenes glabrous or nearly so below the middle........ 7. A. Griscomi. 
a. Stem-leaves 3-5 pairs, all evenly dentate: pappus yellowish- 
brown or olive-tinged; its bristles subplumose............ 8. A. mollis. 
1. A. ALPINA Olin & Ladau. Fic. 1. Stem 0.5-3 dm. high, sparingly 
short-villous below, densely so above, copiously villous-lanate at tip: 
leaves nearly glabrous or minutely glandular hispid; the basal linear- 
lanceolate, 3-9 em. long, 0.4-1.6 em. broad, entire or with few remote 
small teeth; cauline 1-3 pairs, entire, sessile, the lowest usually much 
longer than the reduced upper ones: heads solitary (rarely 2—4), 4-6 
cm. broad: involucre densely villous-lanate at base; its 15-20 narrowly 
lanceolate long-acuminate usually purplish bracts only sparingly 
pubescent above the middle, 1.2-1.5 cm. long, 2-3 mm. broad: ligules 
10-15, with 3 blunt lobes 1-2 mm. long: achenes hirsute: pappus 
cream-white; its bristles barbellate.—Diss. 11 (1799), acc. to Ind. 
Kew. A. montana, 8 alpina L. Sp. Pl. ii. 884 (1753). A. angustifolia 
Vahl, Fl. Dan. ix. t. 1524 (1818).—Arctic regions, south to rocky 
slopes of the Torngat Mts., Labrador, Mosquito Bay, Ungava Distr., 
northern Manitoba, and Alaska; arctic and alpine Eurasia. Fl. 
August. 
2. A. PULCHELLA Fernald. Fic. 2. Stem 1-1.8 dm. high, villous, 
especially above, with white hairs 1-2 mm. long mixed with minute 
stipitate glands: leaves loosely villous on both surfaces; the basal 
lanceolate or oblanceolate, 3-15 cm. long, 0.5-1.5 em. broad, entire 
or remotely callous-dentate; cauline 1-2 pairs, entire: head solitary, 
4.5 em. broad: involucre densely villous-lanate at base; its 8-10 nar- 
rowly rhombic long-attenuate bracts glandular and loosely villous to 
the tip, 1.5 cm. long, 8-8.5 mm. broad: ligules about 10, with 3-4 
sharp lobes (the longest 3-5 mm. long): achenes hirsute: pappus 
white, barbellate-—Ruopora, xvii. 18 (1915).—Dry exposed lime- 
stone ledges and shingle, Table Mt., Port à Port Bay, Newfoundland. 
Fl. July. 
3. A. PLANTAGINEA Pursh. FriG.4. Stem 1.5-4.5 dm. high, glabrous 
or only very sparingly villous-hispid below, glandular-puberulent at 
summit: leaves glabrous or minutely pilose on the nerves and margins, 
entire; the basal oblong to oblanceolate, 0.6-1 dm. long, 1.2-2 em. broad; 
cauline 3—4 pairs, sessile, the lower 7-13 cm. long, the upper much 
reduced: heads 1-3, 4-5 cm. broad: involucre glandular-villous at 
