ROSE FAMILY 115 
2. Fruit not evidently a pome, or not at all so. 
(a) Trees or shrubs. Fruit with a stone usually of 2-5 bony 
1-seeded carpels united. Crategus, VI 
(®) Shrubs. Fruit with many akenes borne on the interior 
of a fleshy calyx tube. Rosa, XIII 
I. PHYSOCARPUS Maxim. (OPULASTER) 
Shrubs. Leaves simple, palmately veined and lobed, peti- 
oled. Flowers white, in terminal corymbs. Calyx spreading, 
5-lobed. Petals 5. Stamens numerous. Pistils 1-5, short- 
stalked; stigma terminal; ovaries becoming inflated at matu- 
rity, 24-seeded, splitting open.* 
1. P. opulifolius Maxim. Nine-Barx. A spreading shrub, 3-6 ft. 
high, the old bark separating into thin strips. Leaves petioled, 
broadly ovate or rounded, often heart-shaped, 3-lobed, the lobes 
doubly crenate-serrate; stipules deciduous. Corymbs terminal, pe- 
duncled, nearly globose, downy, many-flowered. Follicles 3-5, much 
longer than the calyx, smooth and shining, obliquely tipped by the 
persistent style. Banks of streams.* 
Tl. SPIREA L. 
Shrubs with simple leaves. Flowers perfect, in terminal 
or axillary racemes or panicles. Calyx 5-cleft, persistent. 
Petals 5. Stamens numerous. Pistils usually 5, free from the 
calyx and alternate with its lobes. Follicles not inflated, 2— 
several-seeded.* 
1. S. salicifolia L. Wittow-Leavep Spiraa. Shrubs 2-5 ft. 
high, branches smooth. Leaves lanceolate to oblong-ovate, smooth 
or nearly so, sharply serrate, base usually wedge-shaped, pale be- 
neath; stipules deciduous. Flowers white or pink, panicle dense- 
flowered; follicles smooth. On low ground.* 
2. S. cantoniensis Lour. Bripat Wreata. Shrubs 2-4 ft. tall; 
branches long, slender, and spreading. Leaves lanceolate, serrate, 
sometimes 3-lobed or pinnatifid, with a bloom beneath. Flowers 
white or pinkish, in axillary racemes or corymbs, often forming 
long wreaths. Follicles smooth. Cultivated from Europe. 
3. S. tomentosa L. HarpHacx. Erect shrubs. Stems densely 
downy, usually simple. Leaves simple, ovate or oblong, serrate, 
densely rusty-downy below, smooth and dark green above. Flowers 
