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ADJACENT TO HORTICULTURAL HALL. 77 
toothed; white or rose-colored flowers in a loose cluster; wedge-shaped 
petals 3-lobed at the apex. 
* Rubus Nutkanus, Afocino. WHITE-FLOWERING RASPBERRY. Native, 
from Michigan westward; no prickles, not bristly; leaves simple, 5-lobed, 
coarsely toothed ; flowers large, white, and few in a cluster. 
Rubus odoratus, Zinneus. Shrub with the “branches, stalks, and calyx 
bristly with glandular clammy hairs ;”’ leaves 3- to §-lobed and finely toothed; 
large flowers ** purple rose-color.”” Common in our colder woods. 
Rubus rhamnifolius, Werke and Nees. Shrub from Germany, with stem 
angled, grooved, and prickly, and not erect; leaflets 3 to §, round, pointed, 
and hairy on the under surface. An unimportant species, with dark fruit. 
Rubus strigosus, J/ichaux. WILD RED RASPBERRY. Native; erect; 
younger parts covered with bristles or weak prickles, older parts prickly; | 
leaflets 3 to 5, oblong, pointed, cut-toothed, and white on the under surface; 
terminal one sometimes stalked, lateral ones never ; flowers small, white; fruit 
light red, well flavored, and falling from the receptacle when ripe. . 
Rubus tilizfolius, Werthe. LINDEN-LEAVED BRAMBLE. Native of Ger- 
many; stem round and smooth; leaves with 5 ovate, heart-shaped, sharp- 
pointed, slightly-toothed leaflets; prickles nearly straight. 
Rubus triflorus, Richardson. DWARF RASPBERRY. Native; annual, { 
herbaceous, without prickles; white flowers small, and fruit of but few grains; 
3 to § leaflets thin, smooth, and sharp at both ends; flowers I to 3 ina cluster. 
R. mucronatus, Seriuge, of the gardens belongs here. 
Spirea. Shrubby or sometimes herbaceous; calyx short, usually 5-cleft, 
neither thickening into a fleshy cup nor closing over the fruit; ovaries from 2 
to 12, with several seeds and opening along the one side; stamens usually 
numerous. 
Spirza alba, Du Ror, of the gardens is S. salicifolia,—which see. 
Spirza arizfolia, Smith, of the gardens is S. discolor,—which see. 
Spirza betulifolia, Pa//as. BiRCH-LEAVED Spira&A. (Spire@a corymbosa, 
Grays Manual; Spirea chamedrifolia, var. media, Pursh.) Shrub from 
northern regions, with white flowers in close, compound, flat-topped clusters ; 
leaves oval, smooth, and more or less toothed; ovaries 5, smooth. 
Spirza callosa, 7hunberg. (Spir@a Fortuni.) Native of Japan. Shrub 
with deep pink flowers in flat-topped clusters which terminate the branches; 
** 10 glands at the mouth of the calyx ;”’ narrowly oblong taper-pointed leaves 
sharply and unequally toothed, 
Spireza discolor, Pursh, var. ariefolia, Watson. (Spirea ariafolia, 
Smith.) Tall, slender, branching shrub, from Oregon, with a large, drooping, 
compound mass of small yellowish-white flowers ; the roundish, blunt-pointed, 
thin leaves with several blunt and topthed lobes (or often deeply cleft), more 
or less soft downy. 
Spirza Douglasii, Hooker. Doucias’ MEADOwW-SWeEeET. Shrub from 
California and Oregon, with pink flowers in close, narrow clusters terminating 

