NATIVE WOODY PLANTS OP THE UNITED STATES 



355 



Smoothbark, 



cottonwood (Populus acuminata). 



oak (Quercus velutina). 

 Snailseed (Cebatha Carolina, 



Cocculus diversifolius) . 

 Snap willow (Salix fragilis). 

 Snapdragon pentstemon (Pentstemon 



antirrhinoides). 



Snow gooseberry (Ribes nweum). 

 Snowbell (Styrax grandifolia) . 

 Snowberry, (Symphoricarpos albus). 



Mountain (Symphoricarpos oreo- 

 philus). 



Roundleaf (Symphoricarpos rotundi- 

 folius). 



Utah (Symphoricarpos utahensis). 



Western (Symphoricarpos occiden- 

 talis). 



Whortleleaf (Symphoricarpos ro- 



tundifolius ) . 



Snowbrush (Ceanothus cordulatus, 

 Ceanothus velutinus). 

 Snowdrop, (Halesia Carolina). 



tree (Halesia diptera). 

 Snowflower tree (Chionanthus virgl- 



nica). 

 Snowy hydrangea (Hydrangea radi- 



ata). 

 Soapberry, 



Drummond (Sapindus drummondii). 



Florida (Sapindus marginatus). 



Western (Sapindus drummondii). 

 Soapbush (Porlleria, angustifolia) . 

 Soft, 



arrowwood (Viburnum molle). 



maple (Acer rubrum, 



Acer saccharinum) . 

 Softleaf, 



arrowwood (Viburnum molle). 



willow (Salix sessilifolia) . 

 Soldier berry (Ribes aureum). 

 Solonis grape (Vitis longii). 

 Sonora ironwood (Olneya tesota). 

 Sophora, pink (Sophora afflnis). 

 Sorrel-tree (Oxydendrum arboreum). 

 Soulard crab apple (Mains soulardii). 

 Sour, 



berry (Rhus integrifolia) . 



buffaloberry (Shepherdia argentea). 



cherry (Prunus cerasus). 



gum (Nyssa sylvatlca). 



oak (Rhus integrifolia). 



tupelo (Nyssa ogeche). 



tupelo gum (Nyssa ogeche). 

 Sour-top blueberry (Vaccinium cana- 



dense). 



Sourwood (Oorydendrum arboreum). 

 Southern, 



balsam fir (Abies fraseri). 



black gum (Nyssa biflora). 



blackhaw (Viburnum rufldulum). 



buckthorn (Bumelia lycioides). 



California black walnut (Juglans 

 calif ornica ) . 



cypress (Taxodium distichum). 



fox grape (Vitis rotundifolia) . 



Southern Continued. 



gooseberry (Vaccinium melano- 

 carpum). 



hackberry (Celtis mississippiensis) , 



hard pine (Pinus australis). 



magnolia (Magnolia grandiflora) . 



pine (Pinus australis). 



prickly-ash (Xanthoxylum clava-her- 

 culis). 



redcedar (Juniperus lucayana). 



red oak (Quercus rubra). 



shagbark hickory (Carya caroUnae- 

 septentrionalis) . 



spicebush (Benzoin melissaefolium) . 



spruce (Picea australis). 



sugar maple (Acer floridanum). 



white cedar (Chamaecyparis thy- 

 oides). 



wild cherry (Prunus australis). 



witch-hazel (Hamamelis macrophyl- 

 la). 



yellow pine (Pinus echinata). 

 Southwestern black cherry (Prunus vi- 



rens ) . 

 Spanish, 



bayonet (Yucca spp.). 



buckeye (Ungnadia speciosa). 



dagger (Yucca spp.). 



grape (Vitis berlandieri) . 



oak (Quercus coccinea, 

 Quercus digitata, 

 Quercus rubra). 



Sparkleberry (Vaccinium arboreum). 

 Speckled alder (Alnus incana). 

 Spicebush (Benzoin, aestivale, 

 Myrica cerifera). 

 Spineless hop sage (Graysia brande- 



gei). 



Spinescale (Atriplea? spinifera). 

 Spiny, 



greasebush (Forsellesia spinescens). 



hackberry (Celtis pallida). 



hop-sage (Grayia spinosa). 



myrtle (Caenothus spinosus). 



saltbush (Atriplev confertifolia). 

 Spiraea, 



Douglas (Spiraea douglasii). 



Dwarf (Spiraea caespitosa). 



Meadow (Spiraea alba). 



Virginia (Spiraea virginiana). 



Willowleaf (Spiraea salicifolia) . 

 Sponge wood (Acacia farnesiana). 

 Spoon wood (Kalmia latifolia). 

 Spotted, 



bark (Quercus shumardii). 



oak (Quercus coccinea, 

 Quercus nigra, 

 Quercus shumardii, 

 Quercus texana). 

 Spring rabbitbrush (Tetradymia gla- 



brata). 

 Spruce (Tsuga canadensis). 



Alberta (Picea albertiana). 



Bigcone (Pseudotsuga macrocarpa). 



Black (Picea mariana). 



Blue (Picea pungens). 



