12 
Holm, The genus Carex in North-West America. 
The Lejoclilaenae so profusely dispersed on the Atlantic coast 
are rare in Northwest America, and C. polijtricJioides is the only 
species that Grosses the continent, besides that it occurs, also, 
in the Rocky Mountains of Colorado. C. Geyeri shows a more 
Western distribution, while C. miüticaulis is much rarer, being only 
known from Oregon and California. C. Hendersonii^ the only 
member of the laxiflora-grow^ ^ is confined to our region: damp 
woods and wooded canyons in Washington, Oregon, British 
Columbia and Vancouver island. In passing to the Dactylostachyae 
we meet here with the very rare C. melanocarpa from Alaska: 
St. Lawrence island; it is, also, reported from a few places in 
northern Siberia. — C. concinna is only recorded from Yukon and 
British Columbia, from where it extends to Alberta, Montana and 
Wyoming; a like distribution is exhibited by C. Ricliardsonii. 
The Microcarpae are only represented by the very rare G. 
cinnamomea from Oregon, where it has been found in upland 
marshes and springs near Kerbyville and south of Waldo in Oregon; 
it is, also, known from California. Of the Athrochlaenae C, pyre- 
naica shows a remarkable wide distribution throughout the region 
extending southward to Colorado, besides that it occurs, also, 
in Colorado, in New Zealand, Caucasus and the Pyrenees, a 
distribution which shows the danger in applying geographical 
names to species. The other species C. nigricans does not occur 
outside this continent, but is quite frequent in the mountains of 
Alaska, Washington, Oregon and British Columbia, extending to 
Alberta, Wyoming, Utah and Colorado. The Stenocarpae so highly 
developed in the European Alps and the Himalayas are quite well 
represented in America. We have here the very rare C. lejocarpa, 
collected at several stations in Alaska; also the equally rare C. cir¬ 
cinata from Alaska, the Olympic Mountains in Washington and 
Queen Charlotte island. British Columbia. C. luzulaefolia, a very 
rare species, has been collected in mountain-swamps in Oregon, 
besides that it occurs, also, in California, in the Sierra Nevada at 
high allitudes, and in Utah. C, ahlata is, on the other hand, not 
infrequent in Washington, Oregon and Idaho, extending to British 
Columbia, Vancouver island, Utah and Wyoming; the variety 
luzulaeformis has been reported from Mt. Paddo, Washington. 
It is interesting to notice the presence of C. misandra in Alaska 
(St. Lawrence island. St. Matthew island, Kotzebue and Norton 
Sounds, Cape Nome and Port Clarence), but otherwise it has only 
been found in the Hudson Bay region and in Colorado. None 
of the Lamjrrochlaenae are frequent in this region, and C. rupestris 
has only been found in the Chilkat Region and at Port Clarence; 
it is altogether very rare in North America, having only been 
reported from Colorado and the northern Canadian provinces. 
C. ohtusata, rare in Yukon and Idaho, and known only from a 
few stations in Colorado and Montana, is, on the other hand, 
abundant in the prairie region and amongst the foothills through¬ 
out Canada. Another very rare plant is C. pedata of which 
only a very few specimens have been collected in Yukon and the 
Chilkat Region, but nowhere eise on this continent; the species 
occurs, however, in Greenland. Although C. not infrequent 
