ROUND TRIP BETWEEN IOWA AND PUGET SOUND. 177 



dotsiKja miicvonata, was doubtless the most common of the coni- 

 fers as well as the largest tree of the islands, reaching six to nine 

 feet in diameter. The giant cedar, Thuja plica, is much less 

 conniion, and the western hemlock, Tsuga heterophylla, was for 

 the most part confined to the higher elevations, as far up the 

 sides of Mount Constitution, where it was seen very commonly. 

 A balsam fir, Abies grandis, was often noticed, and Plnus con- 

 toria is common at high elevations on some of the islands, l^or 

 should we leave the Gynuiospvvms without adding the Rocky 

 Mountain juniper, Juniperus scopulorum, and the yew, Taxus 

 hvcrifolia. Of the deciduous trees, Alnus oregona and Quercus 

 garryana are at least the ones from which lichens were collected 

 most frequently. Besides these must be mentioned the madrona, 

 A rhutus menziesii, which grows along the rocky shores and, with 

 its characteristic reddish-brown bark, is one of the first trees to 

 attract the attention of one not familiar with the flora. The 

 madrona is a tree of limited range and, with its peculiar bark 

 and its evergreen leaves, is surely one of the most interesting 

 plants of the west coast. 



Of shrubs and herbs we can only give space to a few of the 

 most interesting. Two pretty little shrubby plants of the woods 

 are the two Oregon grapes, Berheris nervosa and Berberis aqui- 

 folnun. Salal, GauUJieria. shallon, also challenges the attention 

 of the stranger at once. The beautiful twin flower, Linnea bore- 

 al is, is very common in certain places in the coniferous woods, 

 and the Indian pipe, Monotropa unifiora, grows in great profu- 

 sion in places in dark woods. Two especially interesting plants 

 of xerophytic adaptation are Sedum spathidi folium and Gor- 

 mania oregana. The former occurs on rocks in rather exposed 

 places at all elevations found on the islands, and the fleshy roots 

 and stems of the specimens collected had not lost all their moist- 

 ure and succulence after lying five months in the herbarium. 

 The latter is a very similar but smaller plant noticed only at the 

 top of Mount Constitution. The little parasite, Arceuthobium 

 americanum., locally called "mistletoe," is a very interesting 



