114 Rhodora [JUNE 
ing from Bering Straits across arctic Siberia and south to the Altai, 
and along the coast of Alaska to “Brittisch Nord-Amerika.” In 
1916 its range, as understood by the monographer of the genus, Green- 
man,' was essentially the same, he citing specimens from as far south 
as the Aleutian and Shumagin Islands and “ Mucklung River" (sup- 
posed to be in British Columbia). At the same time Senecio Fernaldii 
Greenman,? from a spur of the Long Range in Newfoundland, was 
described as a new species. The type of the latter was a single 
rather exceptional individual,” but it showed characters in the foliage 
and in its lack of ligules which seemed to separate it from the ordinarily 
radiate S. resedifolius. Subsequently, however, the Newfoundland 
plant (figs. 1° and 1*) has been twice collected in quantity at the type- 
locality, in July, 1914 (Fernald & St. John, no. 10,873) and in July, 
1921 (Mackenzie & Griscom, no. 10,483). A few individuals of these 
later collections are good matches for the type; but of the 47 plants 
of these two collections preserved in the Gray Herbarium all but 
these half-dozen individuals show such departures in the toothing 
and shape of the basal leaves, development and cutting of the cauline 
leaves, and development of ligules that, by those who have not seen 
them growing in one area of limestone shingle, and who might depend 
too reliantly upon the key-characters used by Greenman, “heads 
. . . discoid,” and “Lower leaves sharply dentate,” they 
might readily be mistaken for several species. The basal leaves may 
be sharply dentate, rounded-dentate or shallowly undulate, oblanceo- 
late, rhombic, elliptic, orbicular or reniform, and at base from nar- 
rowly cuneate to cordate. The middle and upper cauline leaves 
likewise vary from linear- or lance-attenuate to deltoid and from 
entire to pinnatifid; and the heads are either discoid or radiate. S. 
Fernaldii, growing as it does upon a dry exposed limestone tableland 
without shelter from wind and brilliant light, is a dwarf plant with 
strong tendency to purple coloring in leaves and involucre, and in 
all these features, as well as in its disk-flowers, the individuals with 
crenate dentate basal leaves seem quite inseparable from Chamisso's 
original material from the west side of Bering Strait of S. resedifolius, 
! Greenman, Ann. Mo. Bot. Gard. iii. 99 (1916). 
? Greenman, 1. c. 90 (1916). 
3“ but after we had repeatedly made solemn vows to look at nothing else and were 
finally hastening back across the barren in order to reach the settlement before dark, 
an unusual appearing Senecio came riding down a mass of sliding gravel to my very 
feet. This was too great a temptation, so I snatched the plant as it was sliding past. ” 
—Fernald, Ruoponma, xiii, 131 (1911). 
