1900. No. 8. VASCULAR PLANTS COLLECTED IN ARCTIC NORTH AMERICA. 2I 
is a very distinct character —; leaflets in 6—7 pairs, lanceolate to ovate, 
under side with hairs mostly on the midvein, upper side more uniformely 
hairy, hairs white, rather long and loosely appressed; scape with more 
or less spreading long, villous, white hairs, especially densely in its upper 
part; calyx densely villous-pubescent of black hairs and often also with 
longer white villous hairs. 
The plants have yellow flowers and form rather large tufts. It seems 
to be an Arctic Amerian and Beringian form substituting the var. sordida 
of Arctic Europe. 
It is according to descriptions the same plant which J. Macoun 
(1886 1. c.) and Miss A. Eastwoop have named O. leucantha, and part of 
the forms so named by A. Gray (l. c.) and A. BunGE belong also here, 
but it is certainly not the true O. /eucantha (PALL.) PERS. (= Astragalus 
leucanthus PALLAS), which has »foliola glauco-subargentata« (PALLAS |. c.) 
or »foliolis pilis arcte adpressis subincanis« (LEDEBOUR, Fl. Ross. I, 
1842, p. 597). 
Besides in Arctic America our plant occurs in Chukckes Land, as 
O. Mavdelliana TRAUTVETTER (Acta Horti Petropolitani, VI, 1879, p. 16) is 
without doubt this form. The author lays much stress on the general habitus, 
the kind of hairiness and the colour of the stipules (»fuscæ<) as distin- 
duishing marks from related species, viz. O. campestris and O. sordida, 
and all these characters are the same as in O. campestris. var. melano- 
cephala. I have not had acces to TRAUTVETTER'S own specimens, but specimens 
collected by F. KJELLMAN, who records it from Konyambay (Long. W. 
172° 53) are in the Riksmuseum of Stockholm, and they agree exactly 
both with the description of O. Maydelliana TRAUTV. (they have been so 
named by KJELLMAN, Vega Exp. Vetensk. Arb., 1883, I, p. 523) and 
with the authentic specimens of O. campestris, var. melanocephala Hoox., 
and I feel sure therefore that the two names are merely synonyms. 
Astragalus L. 
46. Astragalus alpinus L., Sp. pl, 1753, p. 1070; Macoux, Cata- 
logue I, 1883, p. 112; Phaca astragalina D. C.; Hooker, Fl. Bor. Am, 
I, 1834, p. 145. 
Rar, Wollaston-Victoria Land. 
In full flowering on July 31st 1904, also on Aug. 5th 1905. 
A rather small and rather hairy form like specimens from Melville 
Island. 
