^ 



PIPER FLORA OF THE STATE OP WASHINGTON. 59 



The abundant herbs are: 



Clintonia uniflora. 

 Disporum oregamim. 

 Leptaxis menziesii. 

 Mitella caulescens. 

 Oxalis oregana. 



Oxalis trilliifolia. 

 Phegopteris dryopteris. 

 Tra utvetteria 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. 



CHAKACTEBISTIC SPECIES OF THE CANADIAN ZONE." 



Abies amabilis. 

 Abies grandis 

 Abies nobilis. 



*Cornu8 canadensis. 

 *Lonicera conjugialis. 



Lonicera utahensis. 



Menziesia ferruginea. 



Pachystima myrsinites. 



Pyrus sitchensis. 

 *Ribes ciliostim. 



Trees. 



Shrubs. 



Herbs. 



Allotropa virgata. 

 *Anemane dcltoidea. 

 * Anemone piperi. 



Antennaria racemosa. 



Arnica cordifolia. 

 *Cacaliopsis nardosmia glabrata. 

 *Capnoides scoitleri. 

 *Cardamine lyallii, 



Cephalanthera austinae 



Chelone nemorosa. 

 *Circaea alpina. 



Claytonia asarifolia. 

 *Clintonia uniflora. 



Coptis occidcntalis. 



Corallorhiza corallorhiza. 



Corallorhiza mertensiana. 



Disporum oreganum. 

 *Oalium bifolium. 

 *Heuchera micrantha. 

 *Kelloggia galioides. 



Leptaxis menziesii. 

 *Lycopodium annotinttm. 



Lycopodium clavatum. 



Acer douglasii. 

 Pinus monticola. 

 Taxus brevifolia. 



liibes laxiflorum. 

 *Ribes visGosissimum. 

 *Rubus nivalis. 

 *Sambuciis melanocarpa. 



Symphoricarpos acutus. 

 *Vaccinium scoparium. 



Lysias orbiculata. 



Mitella caulescens. 

 *Monotropa hypopitys. 



Ophrys caurina. 



Oxalis oregana. 

 *Oxalis trilliifolia. 



Pentstemoii diffusus. 



Phegopteris dryopteris. 



Pyrola cJilorantha. 



Pyrola secunda. 



Rudbeckia occidentalis. 

 *8anguisorba latifolia. 



Saxifraga mertensiana. 



Sedum oreganum. 



Senecio triangularis. 

 *8treptopus roseus. 



Synthyris reniformis. 



Thcrofon occidentalc. 

 *Tiarella unifoliata. 



Trautvetteria grandis. 



Vagnera .sessilifolia. 



Viola glabella. 



Viola orbiculata. 



oThe species marked with an asterisk are restricted to the Canadian zone. 



