1909. No. 8. VASCULAR PLANTS COLLECTED IN ARCTIC NORTH AMERICA. 69 
Turczanınow and HERDER, |. c., pp. 3—4. A more important difference 
seems to me to be that the outline of the leaf-blade is broadly ovate- 
cordate, not triangular-cordate as in most European and Asiatic specimens. 
Arnica L. 
113. Arnica alpina (L.) Or, Dissert. Arnica, Upsala, 1799. 
King Point. In full bloom in the first week of July (4th—gth), 1906. 
Herschell Isl. In full bloom July 17th, 1906. 
Most of the many well-developed specimens from King Point and 
Herschell Island have but one flower-head and a few have three. In all 
characters the material agrees exactly with the numerous specimens from 
Greenland in the Copenhagen Herbarium. 
. Senecio L. 
114. Senecio lugens RicHarpson, in Franklin ıst Journ., ed. 1, 1823, 
App. p. 747; Hooker, Fl. Bor. Am., I, 1834, p. 332, pl. 114; ? S. lugens, 
var. Blatsdellii Eastwoop, Botan. Gazette, 33, 1902, p. 298. 
Putten’s list, Arctic Coast. 
King Point. Two young individuals, only in buds, belong pro- 
bably to this species (June 29th, 1906). 
Herschell Isl. A _ specimen in full bloom collected on July 
17th, 1906. 
The specimen from Herschell Island agrees exactly with the descrip- 
tion by RicHarpson and Hooker and with the drawing by Hooker, only 
differing in its lower stem (15 cm. high); the achenes are glabrous. 
115. Senecio palustris (L.) Hoox., Fl. Bor. Am., I, 1834, p. 334 (cum 
BP, congestus); LEDEBOUR, Fl. Ross. II, 2, 1845—46, p. 648 (cum varr. 3, 
congestus et y, laceratus LEDEB.); S. Kalmir Nuttatt, Gen. North Am. 
plant., Il, p. 65; Hooker, I. c. p. 335. Cineraria palustris L., Sp. pl. 
1753, P- 1243; C. congesta R. Brown, Cloris Melvill., 1823, p. 21. 
PuuueN's list, Point Barrow to Mackenzie River (S. palustris, var. congestus). 
King Point. With not fully ripe fruits, autumn of 1905. 
Herschell Isl. In full flower in July 1906 (17th—2oth). 
The specimens collected vary very much with regard to the breadth 
and dentation of the leaves, thus showing that no distinctive character 
can be based upon them; there are specimens with linear, remotely sinuate 
leaves (C. congesia R. Br.) and others with pinnatifid-laciniate leaves 
(S. Kalmii Nutt.; S. palustris, y, laceratus LeDE»B. Common for all 
specimens are the densely crowded heads and the extreme villousness on 
the upper part of the plant. I think therefore it may be convenient to 
