1898—1902. No. 16.] FLOW. PLANTS AND FERNS OF N.-W. GREENLAND. 83 
Here, as in a good many other cases, the descriptions of species 
given by CHamisso and ScHLEcHTENDAL have been overlooked or un- 
justly put aside; and it is only recently that they have again been taken 
into consideration. This is done for Montia by H. Linpperg, 1. c., who 
has pointed out that the M. fontana of Linnarus is not uniform: even 
though the differences between its constituents are not greater than to 
allow of their being placed as subspecies under it. The two species of 
Gueuin, Fl. Bad. M. minor and M. rivularis are, however, too nearly 
connected to be held apart. Both are of southerly distribution, and 
LinpBeRG places them together as subsp. minor under M. fontana, with 
a variety rivularis comprising the form from running water. From — 
M. fontana *minor, with its strongly tuberculate seeds, the other subsp. 
lamprosperma, (CHam.) Linps. fil., is well distinguished by its smooth, 
glossy seeds. A similar division is already made by Fenzx in Lepesovr, 
FI. Ross. II, p. 152, even if the two plants are here designed as a chon- 
drosperma and 8 lamprosperma. Fernzu also says there that both 
show the same variations in mode of growth and in the shape of the 
leaves; but besides this he speaks of forms intermediate between the 
varieties. Already Cuamisso speaks of his new species as especially 
arctic and alpine; its distribution is, however, not easy to give without 
an inspection of a considerable quantity of material, as most of the flo- 
ras use collective names. The Western Greenland plant, however, ‘is 
always M. lamprosperma, which alone seems to enter the arctic region, 
and therefore may as well keep the rank its author has given it. I must 
take it for granted, that Werueritt’s plant is identical with that of the 
southern coast. 
Occurrence. S. Inglefield Gulf: Cape Acland (WerHERILL). 
Distribution: Danish West Greenland, Arctic America (?, compare 
Britton & Brown, l.c.), Alaska, Unalaschka, California (?), Andes of 
South America, Eastern Siberia (?), Northern Europe, Faeroes, Iceland. 
M. minor is distributed in Europe from the southernmost part of Scan- 
dinavia southwards, and it probably has a corresponding distribution in 
Asia and perhaps in America. 
Polygonaceae. 
Polygonum viviparam, L. 
P. viviparwm, Smwons, FI. Ellesm.; OstTenreip, Plantes N. E. 
Grénl. [P. viviparum, Dickie, Not. fl. pl., in INGLEFIELD, Summer Search; 
