THE FLORA OF SITKA, ALASKA 



431 



LITTORAL FLORA. 



(PLATE XT I.) 



Included in this group are the species that are found only, 

 or most abundantly, on the sea beaches or their immediate 

 vicinity. Some of these species thrive on rocks where there is 

 scarcely any soil visible. Others occur on gravelly soil. Nearly 

 all the soil found in the immediate vicinity of the sea is com- 

 posed largely of coarse gravel, while in many places the shore 

 is composed of bowlders, or large rocks, in the crevices of which 

 the plants may find some decayed matter and obtain a foot- 

 hold. The Mowing list includes the more typical plants found 

 in this environment : 



Ammodenia peploides 

 Atriplex littorale 

 Campanula sp. 

 Cochlearia officinalis 

 Draba sp. 

 Elymus mollis 

 Fritillaria camtschatcensis 

 Glaux maritima 

 Ligusticum scoticum 



Pedicularis sp. 

 Plantago maritima 

 Polygonum paronychia 

 Polygonum viviparum 

 Potentilla villosa 

 Rhinanthus crista-galli 

 Sisyrinchium sp. 

 Triglochin sp. 

 Vicia gigantea 



In addition to the group given above there are certain plants 

 that, while not strictly littoral in their habits, are seldom found 

 at any great distance from the sea and are not properly forest, 

 marsh, or aquatic plants. These include several of the grasses, 

 prominent among which are two species of Calamagrostis — C. 

 aleutiea and C. langsdorfii. Other plants of this habit are the 

 following : 



Achillea borealis 

 Anaphalis margaritacea 

 Aster peregrinus 

 Barbarea vulgaris 

 Conioselinum gmelini 

 Epilobium affine 

 Epilobium angustifolium 

 Geum macrophyllum 

 Lepidium sp. 

 Malus diversifolia 

 Mimulus langsdorfii 



Monarda sp. 

 Pinus contorta 

 Potentilla anserina 

 Ranunculus sp. 

 Ranunculus tenellus 

 Rosa nutkana 

 Salix sitchensis 

 Sanguisorba latifo'.ia 

 Sorbus sitchensis 

 Tissa marina 

 Veronica americana 



