PIPER—FLORA OF THE STATE OF WASHINGTON, 
The abundant herbs are: 
Clintonia uniflora. 
Disporum oreganum. 
Leptaxis menziesii, 
Mitella caulescens. 
Ovralis oregana. 
Oxalis trilliifolia. 
Phegopteris dryopteris. 
Trautvetteria grandis. 
Vagnera sessilifolia. 
Most of these occur also in the Transition. 
The zone can, in fact, be recognized in Washington not so much by 
any purely characteristic species as by the great abundance of species 
relatively rare in the contiguous zones. 
CHARACTERISTIC SPECIES OF THE CANADIAN ZONE.@ 
Abies amabilis. 
Abies grandis 
Abies nobilis. 
*Cornus canadensis. 
*Lonicera conjugialis. 
Lonicera utahensis. 
Menziesia ferruginea, 
Pachystima myrsinites. 
Pyrus sitchensis. 
*PRibes cilioswn, 
Allotropa virgata. 
*Anemone deltoided. 
*Anemone piperi. 
Antennaria racemosa. 
Arnica cordifolia, 
Trees. 
Shrubs. 
Herbs. 
*Cacaliopsis nardosmia glabrata. 
*Capnoides scouleri. 
*Cardamine lyallii. 
Cephalanthera austinae 
Chelone nemorosa, 
*Circaea alpina. 
Claytonia asarifolia. 
*Clintonia uniflora. 
Coptis occidentalis. 
Corallorhiza corallorhiza, 
Corallorhiza mertensiana, 
Disporum oreganun, 
*Galium bifolium, 
*Heuchera micrantha. 
*Kelloggia galiocides. 
Leptaxris menziesii. 
*Lycopodium annotinum, 
Lycopodium clavatum. 
Acer douglasii. 
Pinus monticola,. 
Tarus brevifolia. 
Reibes laxiflorum. 
*Ribes viscosissimum. 
*Rubus nivalis. 
*Sambucus melanocarpa. 
Symphoricarpos acutus. 
*Vaccinium scoparium. 
Lysias orbiculata. 
Mitella caulescens. 
*Monotropa hypopitys. 
Ophrys caurina. 
Oralis oregana,. 
*Oxalis trilliifolia. 
Pentstemon diffusus. 
Phegopteris dryopteris. 
Pyrola chlorantha. 
Pyrola secunda. 
Rudbeckia occidentalis. 
*Sanguisorba latifolia. 
Saxifraga mertensiana, 
Sedum oreganum, 
Senecio triangularis. 
*Streptopus roseus, 
Synthyris reniformis. 
Therofon occidentale. 
*Tiarella unifoliata. 
Trautvetteria grandis. 
Vagnera sessilifolia, 
Viola glabella. 
Viola orbiculata, 
o9 
@ The species marked with an asterisk are restricted to the Canadian zone. 
