172 ERYTHEA. 



turfy appearance and developed higher stems with more 

 conspicuous inflorescence and fewer leaves. Only on the 

 margin of the creeks was developed the characteristic 

 luxuriant turf of DisUchlis maritima, frequently grown 

 over by Grindelia rohusta. 



Then followed the Salicornia flat, here and there orna- 

 mented by Cordylanthus maritimus and Frankenia grandi- 

 folia, abruptly ending in a boggy marsh without any vegeta- 

 tion. Here was the mouth of the serpentine creek, the 

 receptacle of all the watercourses of the flat. 



The mouth of the creek was bordered on its left side by a 

 flat ridge of coarse, dry sand without grass, but sparsely 

 overgrown by Frankenia, Stntice Limonium var. Californica 

 and Heliotropium Curassavicum. 



Species entirely extinct in this region and not found else- 

 where: 



Arenaria palustris, Watson. (This may, some day, be 

 rediscovered in Alaska). 



Species extinct in this region but found in other parts of 

 California: 



Menyanthes trifoliata, L. 



Heliotropium Carassavicum, L. 



Cornus Nuttallii, Audubon. 



Epipactis gigantea, Dougl. 



Habenaria leucostachys, Watson. 



Fimbristylis miliacea, Vahl. 



Botrychium ternatum, Swartz. 



Eriophorum (species unknown). 



Arbutus Menziesii Pursh. This consisted of a single 

 specimen at the brim of one of tlie ridges, about twenty feet 

 above the turfy level of the swamp, in a locality now covered 

 by Seventh Street, between Harrison and Folsom. It was a 

 straggling tree growing amidst shrubby Quercus agrifolia 

 and Ceanothiis thyrsiflorus only to be distinguished from 

 Heteromeles when in flower. 



