60 



NORTH AMERICAN FAUNA. 



[NO. 16. 



PLANTS OF TRANSITION ZONK — Continued. 



(2) Specicfi restricted to Trdiixition emit. 



Abies concolor lowiana. 



Acer ciicinatuin. 



Acer glabrnni.'" 



Acer niaeropbylluni. 



Achillea lanulosa. 



Alnns tcnuifolia. 



Aiuehincbicr alnifolia.* 



Ana])bali8 margaritacea. 



Autennaria geyeri. 



Apoc ynuni piimilum. 



A(inilegia truncata. 



Arct()8ta]ibylos ])atula. 



Artemisia hidoviciaua (form). 



Asarnm liartwtgi. 



Ceanotbus cordubitus. 



Ceanotlius integerrimus. 



Ceanotbus (Cerastes) prostratus. 



Ceanotbus velutinus. 



Ccrasus demissa. 



Cerasus emargiuata. 



Cerasus gbiudulosa. 



Cercocarpus ledifolins. 



Cbry8ani])b()ra californica. 



Cbrysotbamnus bloomeri augustatus. 



Cornus nuttalli. 



Cornus ptubcscens. ' 



Corylus rostrata californica. 



Crata-gus rivularis.* 



Cryptantbe geminata. 



Fragaria bracteata. 



Fragaria cbilocnsis. 



Fritillaria atropurpurea. 



Gayopbytum raiuosissiiiuun. 



Gilia (Collomia) graudillora. 



Hastingsia alba. 



Ilieracium albillorum ("large form). 



Hieracium cynoglossoides nudicaule. 



Hieracium greenei. 



Horkelia pseudocapitata. 



Lai)j)ula nervosa. 



Libocedrus decurrens. 



Lilium wasbiugtoniaiinm. 



Linua'a borealis.' ' 



Linuni lewisi. 



Lotus auiericanus. 



Lupiuus minimus. 



Osmorrbiza nuda. 



Pacbystima myrsinites. * 



Pu'onia browni. 



Pinus attenuata. 



Piiuis lambertiana. 



Pinus ponderosa. 



Polj'gala cornuta. 



Pseudotsuga mucronata. 



Quercus californica. 



Rbamnus californica (or rubra). 



Ribes klamatliense. 



I\ibes viscosissinuini. 



Rosa californica. 



Rosa gymnocarpa. 



Rubus parvidorus.* 



Rubus vitifolius. 



Salix lasiandra. 



iSambucus melanocarpa. 



Sisyrincbium belluni. 



Sniilax californica. 



Solidago elongata. 



Symjiboricarpos pilosus. 



Symi)boricariios racemosus. 



In otber mountains the si)Ocies marked with au asterisk (*) are believed to occur 

 iu the Canadian zone as widl as the Transition. 



(3) Spcciex common to Traiixilion atul I'ppcr I'^otioran ~o)ies. 



Alnus rliombi folia. 

 Artemisia tridentata. 

 Betula occidcntalis. 

 Cercocarpus parvifolius. 

 ( 'brysotbamnus (x-cidtintalis. 

 Kriogouum nudum. 



l-'raxinus oregana. 

 .Fuuii)erus occidental is. 

 Kiinzia tridentata. 

 V l'()i)ulus tricbocarpa. 

 I'runus siiln'ordata. 

 Rhus trilobata. 



'Linn(i<( horeal'iH is ordinarily a Boreal ])laiit, but it was not found in the Boreal 

 belt of Shasta, tbougb cominon in ])laces at Siss<Mi. 'VUo ."^isson form has been 

 separated as var. lomjiJIorK, and may be worthy of recognition as a Transition zone 

 Bubspecies. 



