68 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
KLICKITAT COUNTY. 
A considerable number of species reach their northernmost exten- 
sion in Klickitat County or in adjacent Skamania County and are 
not otherwise known to occur in Washington. In some cases a long 
distance to the southward intervenes before the species again occurs. 
This local northern distribution is perhaps due to the association of 
Humid and Arid Transition conditions and a warm southern slope 
exposure, the resultant combination being highly peculiar. 
The species to which the above remarks apply are: 
Arnica eradiata. 
Azolla caroliniana. 
Bromus orcuttianus, 
Ceanothus prostratus. 
Ceanothus thyrsiflorus. 
Collinsia rattani. 
Collinsia sparsiflora. 
Cynoglossum grande. 
Cypripedium fasciculatum. 
Epilobium ursinum. 
Eriogonum nudum. 
Eryngium petiolatum. 
Festuca confusa. 
Garrya fremontii. 
Juncus uncidlis. 
Lepidium nitidum. 
Melica fugar. 
Mimulus douglasii. 
Nemophila sepulta. 
Orogenia linearifolia. 
Panicum hirticauton., 
Piscaria setigera. 
Plagiobothrys nothofulvus. 
Polygonum austinae. 
Polygonum greenei. 
Scribneria bolanderi. 
Tonella collinsioides. 
Trifolium ciliolatum. 
Gilia bolanderi. Viburnum ellipticum. 
Gilia divaricata. Viola sheltoni. 
Hemicarpha occidentalis. 
Some of these species will perhaps be found in Washington outside 
of Klickitat County, but the flora is well enough explored to make it 
quite certain that this will be the case with but few of them. 
MOUNT STUART AND THE WENACHE MOUNTAINS. 
Mount Stuart, a tall granitic peak in Kittitas County, and the sur- 
rounding Wenache Mountains, have long been of peculiar interest 
botanically, owing to the considerable list of species which are there 
localized. This peculiar localization of species, several of them with- 
out close relatives, seems to be in a measure associated with the 
granitic character of the region. Recent investigations have shown 
that most of the speciés occur also to the northward, but that they are 
confined almost entirely to granitic soils of the crest of the Cascades. 
Among the species thus restricted aré the following: 
Arabis whitedii. 
Cacaliopsis nardosmia glabrata. 
Calamagrostis tweed yi. 
Calochortus lyallii. 
Castilleja elmeri. Lewisia tweedyi. 
Cynomarathrum brandegei. Pedicularis ornithorhyncha. 
Delphinium viridescens. , Poa canbyi. 
Delphinium xantholeucum. 
Douglasia dentata. 
Frigeron leibergii. 
Leptotaenia watsoni. 
