68 C. H. OSTENFELD. M.-N. KI. 
King Point. In beginning bloom July roth, 1906; with flowers 
and unripe fruits Sept. 5th, 1905. 
Herschell Isl. In full flower July 17th, 1906. 
I have referred the material at hand to A. lanulosa Nuttart (Journ. 
Acad. Philadelphia, 7, 1834, p. 36) which is merely a form of À. mille- 
folium. Our specimens are villose-tomentose in the upper parts and the 
involucral scales have a rather large dark-brown membranous margin. 
Matricaria L. 
110. Matricaria inodora L., var. grandiflora (Hoox.) Ostr.; cfr. above 
Be. 25: 
Pyrethrum inodorum, var. pumilum, PULLEN’s list, Richard’s Isl. 
King Point. In bloom and with unripe fruits (Sept. 3rd, 1905). 
Herschell Isl. In full bloom July 13th, 1906. 
The specimens from Herschell Island are 1o—15 cm. high and with 
nearly erect, one-headed stems; those from King Point have more decum- 
bent or ascending stems. 
Artemisia L. 
tit. Artemisia vulgaris var. Tilesii Lepes., Fl. Ross., II, 1845—46, 
p.586; 4. Tilesu Lrpe»., Mém. Acad. St.’ Petersb. Vi p 568. 
A. vulgaris, Purren’s list, Point Barrow to Bear Lake River. 
King Point. With nearly ripe fruits on Sept. 3rd, 1905; in 
buds, just before opening on June 28th, 1906. 
Hers’ichell Is139 mn buds July 17th, a1906: 
The specimens from King Point have pale-green capitulæ, those from 
Herschell Island purple. 
Petasites GÄRTN. 
112. Petasites frigida (L.) Fr., var. corymbosa (R. Br.) HERDER, Plant. 
Raddean. Monopet. Bd. HI, 2, 1867, p. 4; Tussilago corymbosa R. Br., 
Chloris Melvill., 1823, p. 21; Nardosmia corvmbosa Hook., Fl. Bor. Am. I, 
16345) P! 307. 
Purren’s list, Point Barrow to Mackenzie River; Richard’s Isl. (Nardosmia corymbosa). 
King Point. In bloom in June 1906 (roth—2gth), with unripe 
fruits in July (7th). 
Herschell Isl. With unripe fruits July 17th, 1906. 
The numerous specimens collected vary rather much with regard to 
the incisions of the leaves, but taken as a whole the leaves are more deeply 
lobed than in the European plant (cfr. Brirron & Rypperc, Bull. New 
York Bot. Gard., vol. 2, 1901, p. 186); this has been observed earlier by 
