SAXIFRAGACE^ 363 



mens 10, five long and five short, the filaments flat, commonly with three 

 prongs, the middle prong antlieriferous: ovary inferior, styles 3-5. 



D. grdcilis. Sieb & Zucc. Grows to 2 or 3 ft. : flowers many, white, single 

 or double: leaves oblong-lanceolate, sharply serrate, green and smooth. 

 June. Cultivated from Japan. 



D. scabra, Thunb. Tall, pubescent: leaves ovate or oblong-ovate, finely 

 crenate or serrate: flowers pinkish. Later blooming than preceding, and 

 much larger. China and Japan. 



G. HYDRANGEA. 



Shrubs, with opposite, stalked exstipulate leaves, and flowers of two 

 kinds in terminal corymbs or cymes, the outer ones usually sterile, often 

 apetaious, consisting merely of a showy, flat or spreading 5-lobed calyx, the 

 fertile flowers small, with calyx-tube 4-5 toothed: petals 4 or 5: stamens 

 8 to 10, filaments slender: ovary inferior, 2-eelled (rarely 3- or 4-celled): 

 styles 2-4. 



H. arbor6scens, Linn. Leaves ovate, obtuse or cordate at base, acumi- 

 nate, serrate, green on both surfaces, nearly or quite smooth: flowers in 

 flat cymes, often all fertile, but sometimes with many large, white, sterile 

 flowers. Along streams. June to July. 



H. Hortensia, DC. Smooth, with large, toothed, bright green oval leaves, 

 and flowers nearly all neutral, pink, blue or whitish, in great roundish clus- 

 ters. China and Japah. Cultivated in greenhouses. 



H. paniculata, Sieb. Somewhat pubescent, with oblong-ovate, long- 

 pointed, dull, sharp-toothed leaves, and whitish flowers in great elongated 

 panicles. Japan. The common hydrangea of lawns. 



7. PHILADfiLPHUS. Mock Orange (from the flowers). Syringa. 



Shrubs with showy corymbose or paniculate white flowers and opposite 

 simple leaves: petals 4 or 5; stamens 20 or more: ovary 3-5-loculed, becom- 

 ing a capsule. 



P. coron^rius, Linn. Tall shrub with erect branches ; leaves oblong- 

 ovate and smooth: flowers cream-white, fragrant, in close clusters, in late 

 spring. Europe. 



P. grrandifldirus, Willd. Tall, with long recurving branches : leaves 

 ovate-pointed and somewhat downy beneath : flowers pure white, scentless, 

 in loose clusters. Virginia, south, and planted. 



8. RIBES. Gooseberry and Currant. 



Low shrubs, often prickly, with alternate digitately lobed leaves: 

 flowers small: sepals 5 and petal-like, on the ovary: petals and stamens 5, 

 borne on the calyx: fruit a small globular berry. 



a. Gooseberries: flowers 1-3: usually spines heloiv the leaves. 

 R. oxyacantholdes, Linn. Small bush, with long, graceful branches 

 and very short thorns or none: leaves thin, orbicular-ovate, about 3-lobcd, 

 the edges thin and round-toothed; flowers on very short peduncles, the 



