Out of a need, frequently met by the writer and others, for quick reference to more detailed information concerning gross anatomy and life history stages of our Northwestern plant species than generally is to be found in or indeed is appropriate to any local flora, the following pages have been...
Yellow starthistle (Centaurea solstitialis L.) is a member of the knapweed
(Centaurea L.) complex. It is poor forage for all livestock and causes
“chewing disease,” a nervous disorder, in horses. Yellow starthistle infests
millions of acres in California and the Pacific Northwest. Infestations range
from scattered plants to dense stands...
Common groundsel, native
to Europe, is now common
throughout the temperate regions
of the world. It is widespread
in Oregon, Washington,
and Idaho, but most common
west of the Cascade Mountains.
This weed is found in many
crops, including forages, cereals,
mint, berries, and row
crops, as well as in...
Individuals in their 20s today have more diverse experiences with school, work, and family transitions than previous cohorts. Contemporary young adults take longer to finish school, settle into marriages or partnerships, and begin parenting; they frequently change jobs or hold multiple part-time positions. Little is known about how young adults...
The larch casebearer Coleophora laricella (Hbn.) is now established throughout all western larch stands in Region 1. Population levels have begun to fluctuate in some of the older infested stands; however, it is still on the increase in more recently invaded territory. During the past 2 years work was begun...
This multiple case study explores issues of equity in science education through an examination of how teachers' reasoning patterns compare with students' reasoning patterns during inquiry-based lessons. It also examines the ways in which teachers utilize students' cultural and linguistic resources, or funds of knowledge, during inquiry-based lessons and the...
The Douglas-fir tussock moth, Orgyia pseudotsugata McD., periodically
defoliates Douglas-fir, true firs, and other host trees in forests of
the western United States. In the Northern Region, these infestations
occur about once every decade.
This history covers the earliest recorded outbreak in northeastern
Washington from 1928 to 1930 and includes...