PLANTS OF SOUTHEASTERN ALASKA 435 



MYRICACE^. 



Myrica gale L. Sweet G-ale. Occurs on the marshes but is not 

 generally distributed. 



SALICACE^. 



Salix arctica Pall. Collected at Mendenhall and at about 

 2,500 ft. elevation near Juneau. 



Salix harclayi Anders. Collected at Juneau and at Menden- 

 hall. 



Salix commutata Bebb. ? Collected near Juneau. 



Salix conjtmcta Bebb. Collected on the flats at Mendenhall, 

 as was also the following. 



Salix glauca L. (S. seemannii Rydb.) 



Salix reticulata L. (^S^. orbicularis Anders.) Quite common 

 ai Mendenhall, and at high elevations. 



Salix sitchensis Sanson. Common. The only willow the writer 

 found at Sitka. It is the largest of the species listed here. 



Salix stolomfera Coville. (S. unala\schensis Cham.) Collected 

 at Mendenhall and at about 2,500 feet elevation. 



Popiilus tricliocarpa T. & G. Cottonwood. Common in the val- 

 leys near Juneau. 



BE:TULACE^. 



Betula 'papyrifera Marsh. Paper Birch. Occurs in the Taku 

 valley. 



Alnus fruticosa Rupr. Occurs in the Taku valley. Very bushy. 



Alnus oregona Nutt. Red Alder. Common al^ng stream 

 courses; attains a diameter of twelve to sixteen inches and is 

 much sought for fuel. 



Alnus sinuata (Regel.) Rydb. (A. sitchensis Sarg.) Moun- 

 tain Alder. A very abundant species, often covering the steeper 

 mountain slop'cs, where the trunks and branches bend downwaird, 

 having been forced to such position by snowslides. 



URTICACE^. 

 Vrtica lyolJii Wats. Nettle. A common weed of open places 

 and in woods. 



LORANTHACE.E. 

 Razoiiniofskya tsugejisis Rosendahl. On Tsuga heterophylla 

 causing witches ' brooms. Very common around Sitka. 



POLYGONACE^. 

 Oxyria digyna (L.) Hill. Mountain Sorrel. Frequent in wet 

 rocky soil. 



