Description of Native Shrubs 
18. Ninebark. (Physocarpus opulifolius.) 
LEAF: 1%'-3', simple, alternate, serrate and three-lobed, 
roundish, base cordate. FLOWER: p., white (petals 5), small, in 
roundish clusters; June; dark peeling in long strips of many 
thin layers. Var. aurea (cultivated) has yellow variegation in 
foliage. (Pl. II.) 
19. Wild Black Currant. (Ribes floridum.) 
LEAF: 1'-2’, simple, alternate, serrate, 3-5-sharply-lobed, base 
slightly cordate, sprinkled with resinous dots. FLOWER: p., 
whitish or greenish, rather large (petals and stamens 5) in droop- 
ing many-flowered clusters ; calyx long-bell-shaped. May; fruit 
black. (PI. II.) 
20. Wild Red Currant. (Ribes rubrum.) 
LEAF: 1'-2’, simple, alternate, serrate, 3-5-bluntly-lobed, base 
cordate ; veins whitish beneath. FLOWER: as in 19, but from 
buds distinct from leaf-buds ; calyx flat. May, June; fruit red; 
New Hampshire, and west; straggling. (Pl. II.) 
21. Fetid Currant. (Ribes prostratum.) 
LEAF: as in Ig, but base deeply cordate, and not resinous- 
dotted. FLOWER: as in Ig, but clusters evect, calyx flattish ; 
May. Fruit: pale red and (with the stems) 47zstly ; bruised 
herbage and berries malodorous. New England, New York, 
and Pennsylvania. 
22. Round-leaved Dogwood. (Cornus circinata.) 
LEAF: 3'-5’, simple, opposite, entire, roundish to oval, apex 
pointed, woolly beneath. FLOWER: p., white, small (petals 4), in 
large flat clusters. June; fruit light blue; branch greenish with 
warty spots ; 6°-10° high. (PI. II.) 
23. Silky Dogwood. Kinnikinnik. (Cornus sericea.) 
LEAF: 2’-4', simple, opposite, entire, narrow ovate to ellipti- 
cal, apex pointed, dull green, downy beneath, as also branchlets 
and flower-stalks ; branches purplish. FLOWER: as in 22, but 
clusters smaller. June; fruit pale blue; near water; 3°-10° 
high. (Pl. III.) 
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