PIPER — FLORA OP THE STATE OF WASHINGTON, 39 



Shrubs. 



AnielaiicJiicr Ktahcnsis. 

 Artemisia trideiitata. 

 Arteni isia tripartita. 

 CJiri/sofJiaiini iis iianscoi^ufi. 

 Kricaimria nana. 

 Erioijoii tun tuieroihrcum. 

 Eurotia Janata. 

 Grai/ia ■'<i)i)iosa. 



Herbs. 



Adrno.'^tcf/ia capita t a. 

 Artemisia dracnnculoidcH. 

 Asclcpias mexicana. 

 Atriplex canescens. 

 Bergia texana. 

 Carex douglasti. 

 CastiJleja pallescciis. 

 Chacnactis douglasli. 

 Cliorizan the tcatsoni. 

 Ch rysopsis villosa. 

 CIroinc liifca. 

 CoJdcnia niittdllii. 

 (Jolcosanth us linifoJiiis. 

 (Joinaitdra pallida. 

 Corispcri)! urn liysHopifdlium. 

 Cryptanthe ptcrocarya. 

 Dondia depressa. 

 Erigeron concinnus. 

 Erigeron dii^ergcns. 

 Eiipli »rh ia glyptospenn a. 

 Gacrtncria acantJi icarpa. 

 Gaiira parviflora. 

 Gilia Icptomeria. 

 Gilia parviflora. 

 Gilia pungcns hool-rri. 

 Hymenopappus ten iiifulins. 

 Iva axillaris. 

 Iva xanthifolia. 

 Lactiica pnlchella. 

 L app 11 la oeciden talis. 

 Lupinus pusillus. 

 Mamillaria sp. 

 Mollugo verticillata. 

 Monolepis pusilla. 

 NicoMana attcnuata. 



Kitnzia tridentata. 

 Rainona ineuna. 

 Rhus glabra occidentalis. 

 Rli us toxicodendron. 

 Rihcs aureum. 

 Rihes cereuin. 

 Sarcohatus rrrniiculal us. 

 Trtradyni ia canesrrns. 



Oreocanja Iruropliara. 

 Orohanche ludoriciana. 

 Orogenia linearifoliu. 

 Oxytheca dendmidca. 

 Pcntsteino)i acuniinatus. 

 Pentstemo)i dcusfus. 

 Pentstemon gairdncri. 

 Pentstemon gla her. 

 Phaca inflexa. 

 Phacelia linearis. 

 Phlox longifolia. 

 Phragni ites phr<tg)n ites. 

 Piptocalyx eireuniseissa. 

 Psoralea lanceolata seahra. 

 Ptiloria paniculata. 

 Ptiloria ten uifolia. 

 Riiinex venosxis. 

 ^choenoerarnhe lini folia. 

 f>itanion liyxtri.r. 

 SoJanum trifloruin. 

 Hphaeralcea ni unroaiia. 

 ^poroholus airoides. 

 f<poroholiis as peri foil us. 

 ^poroholus eryptandrus. 

 Streptanthns longirostris. 

 Stipa Moomeri. 

 Stipa comata. 

 iitipa occidentalis. 

 i<tipa thurhoiana. 

 Th el y pod i u ni iiitegrifoli inn. 

 Thelypodiuin laeiniufuin. 

 Thelypodiuni viitlallii. 

 Tri folium megaeephalum. 

 Zygadenus paniculatns. 



From the foregoing lists it is evident that the greater portion of 

 the Upper Sonoran flora in Washington is of Great Basin origin. 

 The comparatively small iiroi)ortion of Californian species is prob- 

 ably dne partly to the barriers through which few plants of this zone 



