140 Rhodora [AvavsT 
tomentose on the lower. But in Greenland and Scandinavia a va- 
riety is not uncommon with the leaves villous on both faces, by Lange 
described as var. canescens; this variety is thus identical with var. 
Friesiana 'Trautv.? and has been collected in Labrador’. The width 
of the leaf-blade is also subject to variation, and in Greenland I no- 
ticed the leaves to be broader in the var. canescens than in the typical 
plant. The same observation was made in Colorado, where the va- 
riety was found on several peaks, at elevations from 11,500 to 13,000 
feet. Then there is also a var. corymbosa Fries‘; “triplo majus, cor- 
ymbo multifloro, pedunculis praelongis subfastigiatis," recorded from 
Lapland and Norrland. A monocephalous state, known in many 
other Compositae, is known also in A. alpina viz. * monocephala DC.”’, 
from Alaska and Siberia*, but Kjellman®, who found it on the Asiatic 
coast of Bering Strait, observed that mono- and plio-cephalous stems 
may occur upon the same individual. In Greenland I found a very 
interesting form, perfectly glabrous, the so-called var. glabrata I. 
Vahl: “foliis utrinque viridibus, calathiis solitaris iv. paucis, per- 
iclinio glabriusculo." This variety has since been raised to specific 
rank by Greene as A. glabrata (l. c. 285), and recently also by Por- 
sild* under the same name. However, the few points by which it 
differs from the typical A. alpina are variable in the latter, thus it 
would seem more correct to consider it a variety only. 
Similar variation is known in several other plants, for instance Gna- 
phalium uliginosum L. var. nudum Ehrh., Arabis hirsuta Scop. var. 
glaberrima L., A. petraea Lam. var. glabra, A. alpina L. var. glabrata, 
etc. 
Finally a variety ungavensis has been described by Prof. Fernald 
(l. c.), distributed as A. labradorica Nutt., but evidently distinct from 
this; it differs from the A. alpina by its very tall stature, numerous 
1 Flora Danica: XLVII. Tab, 2786. Copenhagen, 1868. 
? Trautvetter, E. R.: Flora terrae Tschuktschorum (Acta Hort. Bot. Petr. VI. p. 
j Peil. M. L.: Some allies of Antennaria alpina from Newfoundland and the Lab- 
rador Peninsula. (Ruopona, XVIII, p. 237. Boston, 1916). 
4Fries, Elias: Nov. Florae Suecicae Mant. III. p. 102. 1832-1842. 
š Trautvetter, E. R.: Plantas Siberiae Borealis ab A. Czekanowski et F. Mueller 
annis 1874 et 1875 lectas. (Acta Hort. Bot. Petr. V. p. 1. 1877). 
*Kjellman, F. R.: Asiatiska Beringsunds-Kustens Fanerogam-flora (Vega-Exped. 
vetensk. arb. p. 502). 
"Flora Danica, 1. c. Fig. 4. 
8Porsild, M. P.: On the genus Antennaria in Greenland. (Medd. om Groenland; 
LI. Copenhagen, 1915. $ 
