Holm, The genus Carex in North-West America. 
9 
in Alaska at Port Clarence, Sitka and on St. Paul. Island. C. 
Deiveyana and Bolancleri have both been found at several stations 
in Washington, but are otherwise rare within the region. 
In passing to the Astrostachijae C. stellulata shows a very wide 
distribution often accompanied by C. laevicuhnis. C. gijnocrates, 
which is not rare in the northern United States and Canada, has 
only been found in Yukon, British Columbia and on Attu and 
Popoff islands, but not on the Alaskan mainland. With the ex- 
ception of C. Hooclii the other members of the Accintliophorae are 
very unequally distributed in our region. C. stipata, a species 
characteristic of the eastern States, reaches our region south of 
Alaska and Yukon; it has been collected at various stations in 
Washington, but seems to be rare in Idaho and Oregon. The 
rare C. sychnocephala occurs in British Columbia, but extends from 
there to New York. 
Only a few species of the XerocMcienae are common in our 
region: C. marciäa and Doiiglasii, but they have not been found 
in Alaska or in Yukon; they both are Western species and extend 
southward to Colorado and California. C. Sartivelln, not uncommon 
in the eastern and central States, has been reported from Chilkat. 
The very singulär C. macrocephala inhabits the sandy beaches 
along the coast of Alaska, Washington and Oregon. Among the 
Phaenocarpae C. teretiuscula is the only member represented in 
our region, but it shows an exceedingly wide distribution, and 
is often accompanied by the variety ramosa. 
The grex of Yigneae, which is the most amply represented 
in our region, is that of the Athrostachyae. We meet here with 
the eastern C. Crawfordii and scoparia, which do not, however, 
reach Alaska or Yukon. But characteristic of this northwestern 
Flora are C. athrostachya, festiva with several varieties, petasatci, 
siccata, pratensis and Liddonii, while midtimoda, aenea and Bon- 
pJandii are less frequent. Of these C. festiva appears to be the 
most common. C. petasata is very frequent in the mountains of 
Washington, Oregon and Idaho, but is rare in Alaska having only 
been found on Egg Island and near Hidden Glacier in Russell 
Fjord. The Pterocavpae are, on the other hand, poorly represented 
being mostly eastern species; however C. straminea has been 
found at a few stations with some of the varieties but they are 
very rare in this region. The rare C. straminiformis has been 
collected in Washington and Oregon, though only at a very few 
stations; it occurs, also, in California and Colorado. — A most 
scattered distribution is exhibited by C. capitata, which crosses 
the northern parts of the continent, but having so far only been 
detected at a very few stations in Alaska (Cape Nome), Yukon, 
the Hudson Bay Region and New Hampshire. The Ceplicdostacliyae 
are, also, very rare, but it is interesting to notice among these 
C. foetida from Oregon (Mt. Hood) and Washington (Mt. Paddo), 
where Mr. Suksdorf collected it in wet, sandy soil at an elevation 
of about 2,200 Met., and on steep, stony slopes at same elevation. 
Another very interesting species is C. Gayana, which j\Ir. Suks¬ 
dorf has sent the writer from Falcon Valley, growing in wet 
meadows and in water. C. stenophyUa has been found in the 
