356 MISC. PUBLICATION 303, U. 
Spruce—Continued. 
Bog (Picea mariana). 
Brewer (Picea breweriana). 
Cat (Picea canadensis). 
Colorado blue (Picea pungens). 
Double (Picea mariana). 
Douglas (Pseudotsuga glauca, 
Pseudotsuga tazvifolia). 
Engelmann (Picea engelmannii). 
Lemlock (Tsuga canadensis). 
Red (Picea rubra). 
Single (Picea canadensis). 
Sitka (Picea sitchensis). 
Skunk (Picea canadensis). 
Southern (Picea australis). 
Tideland (Picea sitchensis). 
Weeping (Picea brewerianda). 
Western white (Picea albertiana). 
White (Picea canadensis, 
Picea engelmannit). 
Spruce pine (Picea mariana, 
Pinus contorta, 
Pinus glabra, 
Tsuga canadensis). 
Squashberry (Viburnum  acerifolium, 
Viburnum paucifiorum). 
Squaw, 
apple (Peraphyllum ramosissimum). 
bush (Rhus trilobata). 
earpet (Ceanothus prostratis). 
currant (Ribes cereum). 
Gesert-thorn (Lycium torreyi). 
huckleberry (Vaccinium stamineum). 
mat (Ceanothus prostratus). 
thorn (Lycium torreyi). 
Stagbush (Viburnum prunifolium). 
Stagger bush (Xolisma mariana). 
Staghorn sumac (Rhus glabra, 
Rhus hyphina). 
Starleaf (Choisya dumosa). 
Steeplebush (Spiraea tomentosa). 
Sticky, 
currant (Ribes viscosissimum). 
laurel (Ceanothus velutinus). 
rabbitbrush (Chrysothamnus panicu- 
latus). 
Stickyflower rabbitbrush (Chrysotham- 
nus viscidifiorus) . 
Stiff, 
cornel (Cornus foemina). 
dogwood (Cornus femina). 
sagebrush (Artemisia rigida). 
Stink currant (Ribes bracteosum). 
Stinking, 
buckeye (Aesculus glabra). 
cedar (Tumion taxifolium). 
fir (Abies grandis). 
willow (Amorpha californica). 
Stinkwood (Nyssa sylvatica). 
Stone pine, Mexican (Pinus cembrot- 
des). 
Storax, (Styrax officinalis). 
American (Styrax americana). 
Downy (Styrazr pulverulenta). 
Powdery (Styrax puiverulenta). 
Sycamoreleaf (Styraxr platanifolia). 
S. DEPT. OF AGRICULTURE 
Straggle bush (Ribes divaricatum). 
Straggly gooseberry (Ribes divarica- 
tum). 
Strawberry, 
bush (Hvonymus americanus). 
bush, running (Hvonymus obovatus). 
shrub (Calycanthus floridus). 
Stretch-berry (Smilax bona-nez). 
Striped maple (Acer pennsylvanicum). 
Styrax (Styrax americana). 
Sugar, 
blueberry 
um). 
bush (Rhus ovata). 
grape (Vitis monticola, 
Vitis rupestris). 
maple (Acer saccharum). 
maple, black (Acer nigrum). 
pine (Pinus lambertiana). 
sumae (Rhus ovata). 
tree (Acer saccharum). 
Sugarberry (Celtis mississippiensis, 
Celtis occidentalis, 
Ehretia anacua). 
(Vaccinium angustifoli- 
Sumac, 
Dwarf (Rhus copallina). 
Hvergreen (Rhus virens). 
Fragrant (Rhus aromatica). 
Laurel (Rhus laurina). 
Lemonade (Rhus trilobata). 
Mahogany (Rhus integrifolia). 
Michaux (Rhus michauczii). 
Mountain (Rhus copallina). 
Poison (Rhus vernix). 
Shining (Rhus copallina). 
Smooth (Rhus giabra). 
Staghorn (Rhus glabra, 
Rhus typhina). 
Sugar (Rhus ovata). 
Swamp (Rhus vernizr). 
Utah (Rhus trilobata). 
Winged (Rhus copallina). 
Yellow (Rhus glabra). 
Summer grape (Vitis argentifolia). 
Supplejack (Berchemia, scandens). 
Suterberry (Xanthoxrylum amervica- 
num). 
Swamp, 
ash (Frazinus caroliniana). 
azalea (Rhododendron viscosum). 
bay (Persea pubescens). 
birch (Betula fontinalis, 
Betula pumiia). 
black gum (Nyssa bifiera). 
blueberry (Vaccinium corymbosum). 
blueberry, downy (Vaccinium atro- 
coccum). 
candleberry (Myrica carolinensis). 
chestnut oak (Quercus prinus). 
cottonwood (Populus heterophyila). 
currant (Ribes lacustre). 
fly-honeysuckle (Lonicera  oblongi- 
folia). 
gooseberry (Ribes lacusire). 
haw (Viburnum cassinoides, 
Viburnum nudum). 
