352 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 



Rose-acacia (Robinia lispida). 

 Rosebay, (Rhododendron maximum). 



Lapland (Rhododendron lapponicum). 



Mountain (Rhododendron cataw- 



biense). 

 Rosebay rhododendron (Rhododendron 



maximum). 

 Rosemary (Ceratiola ericoides). 



pine (Finns taeda). 



willow (Salix petiolaris). 

 Roses (Rosa spp.). 



Rosin brush (Baccharis sarothroidcs) . 

 Rothrock, 



currant (Ribes ivolfii). 



pentstemon (Pentstemon rothrockii). 

 Rough arrowwood (Viburnum scabrel- 



lum). 

 Roughish arrowwood (Viburnum sca- 



brellum). 

 Roughleaf, 



cornel (Cornus asperifolia). 



manzanita (Arctostaphylos drupa- 



cea). 

 Rough-leaved, 



cornel (Cornus asperifolia, 

 Cornus circinata). 



dogwood (Cornus asperifolia). 

 Round - flowered catclaw (Acacia 



roemeriana). 

 Roundleaf, 



gooseberry (Ribes rotundifolium) . 



grape (Vitis helleri). 



snowberry (Symphoricarpos rotundi- 



folius). 

 Rubber rabbitbrush (Ohrysothamnu^ 



nauseosus). 



Rum cherry (Prunus serotina). 

 Running, 



oak (Quercus pumila). 



strawberrybush (Evonymus obova- 



tus). 

 Russet, 



alder (Alnus crispa). 



buffaloberry (Shepherdia canaden- 



sis). 



Russian-olive (Elaeagnus angustifolia ) . 

 Rusty, 



blackhaw (Viburnum rufidulum). 



nannyberry (Viburnum rufldulum). 

 Rustyleaf (Menziesia ferruffinea). 

 Rydberg, 



oak (Quercus rydbergiana) . 



poplar (Populus acuminata). 

 Sabine pine (Pinus sabiniana). 

 Sacred mustard (Nicotiana glauca). 

 Sadler oak (Quercus sadleriana). 

 Sage, 



Ambrosia bur (Franceria, ambro- 

 siodes). 



Autumn (Salvia greggU). 



Bee (Hyptis emoryi). 



Black (Artemisia arbuscula, 

 Salvia mellifera). 



Bladder (Salazaria mexicana). 



Colorado (Artemisia tridentata). 



Desert (Salvia carnosa). 



Sage Continued. 



Gregg (Salvia greggii). 



Hollyleaf bur (Franceria ilicifolia). 



Little (Artemisia nova). 



Red (Trixis calif ornica). 



Salt (Atriplex canescens). 



Sheep (Eriogonum microthecum). 



Shrubby blue (Salvia ballotae flora ). 



Water (Atriplex torreyi). 



White (Eurotia lanata, 

 Salvia apiana). 



White bee (Salvia apiana) . 



Wolly bur (Franseria erioscentra) . 

 Sage willow (Salix Candida, 

 Saliaf tristis). 

 Sagebrush, 



Basin (Artemisia tridentata). 



Big (Artemisia tridentata). 



Bigelow (Artemisia bigeloini). 



Bud (Artemisia spinescens). 



Coastal (Artemisia calif ornica) . 



Flat (Artemisia bigelovii). 



Hoary (Artemisia cana) . 



Low (Artemisia arbuscula). 



Sand ( Artemisia filifoUa ) . 



Scabland (Artemisia arbuscula, 

 Artemisia rigida ) . 



Silver (Artemisia cana) . 



Small (Artemisia nova). 



Stiff (Artemisia rigida). 



Threetip (Artemisia tripartite). 

 St.-Andrews'-cross (Ascyrum hypericoi- 



des, 



Ascyrum linifolium). 

 St. Johnswort, shrubby (Hypericum 



prolificum). 



St.-Peter's-wort (Ascyrum stans). 

 Salad tree (Cercis canadensis). 

 Salal, (Gaultheria shallon). 



berry (Gaultheria shallon). 

 Saloop (Sassafras albidum). 

 Salt sage (Atriplex canescens). 

 Saltbush, 



Big (Atriplex lentiformis) . 



Parry (Atriplex parry i) . 

 Saltcedar (Tamarix gallica). 

 San Gabriel globemallow (Malvastrum 



gabriclense) . 

 Sand, 



cherry (Prunus pumila). 



grape (Vitus lincecumii, 

 Vitus rupestris). 



jack (Quercus cinerea). 



pine (Pinus clausa). 



plum (Prunus texana). 



sagebrush (Artemisia filifoUa). 



scrub (Ceanothus dentatus). 

 Sandbar willow (Salix exigua, 

 Salix interior, 

 Salix sessilifolia) . 

 Sandbur (Franseria dumosa). 

 Sandmat manzanita (Arctostaphylox 



pumila). 

 Sandmyrtle, box (Lefophyllum buxifo- 



Uum). 



