PLANTS OP SOUTHEASTERN ALASKA 437 



Agrostemma githago L. Cockle. Introduced with oats at Sitka. 



Tissa marina (L.) Britt. On and near the beaches. 



Spergida arvensis L. Spurry. A common weed. 



Cerastiuni] alpinum L. A common species. 



Cerastkitn heliringianum Kegel. Along ravines at Jnneau. 



CerasUum viscosum L. Numerous at Sitka. 



Cerastium, vulgatum L. Collected at Juneau. 



Alsine horealis (Bigel.) Britt. A common species in woods 

 and along streams. 



Alsine hrachypetala (Bong.) Howell. Collected at Juneau. 



Alsine crispa (C. & S.) Holz. Common in the woods at Sitka. 



Alsine media L. Common Chickweed. This is our most per- 

 sistent weed. It causes more trouble than all other weeds com- 

 bined. If a garden is neglected it will overrun everything in 

 the course of one season. 



Alsinopsis propinqua (Richards) Rydb. Collected at Juneau. 



Sagina nivalis Fries. Collected at Mendenhall. 



Sagina occidentalis Wats. In springy ground at Juneau. 



Sagina crassicaidis Wats. Collected at Sitka. 



Ammodenia peploides major (Hook.) Wight. Common along 

 the seashore. 



Vaccaria vaccaria (L.) Britt. Sparingly introduced at Sitka. 

 NYMPHAEACB^. 



Nympliaea polysepala (Engelm.) Greene. Yellow Pond Ldly. 

 Found in the lakes and some of the small ponds. 

 RANUNCULAC'E^. 



Anemone glohosa Nutt. High on the mountains near Juneau. 



Anemone narcissiflora L. Alpine meadows around Sitka. Un- 

 common at low elevations. 



Thalictrum alpinum' L. Collected in the basin back of Juneau. 



Ranunculns hyperhoreus Roetb. A small aquatic species col- 

 lected near Juneau. 



Ranunculus reptans L. Collected along Salmon creek at the 

 head of Silver bay near Sitka. 



Ranunculus ahortivus L. Collected at Juneau. Rather rare. 



Ra<n<unculus hongardi Greene. A common species. 



Ranunculus occidentalis Nutt. Our commonest species. May 

 be var. rohustum. Gray. A smaller form occurs on the moun- 

 tains near Juneau. 



Ranunculus eschscholtzii Schlecht. ? Collected at about 1,800 

 feet elevation near Juneau. 



