SAXIFKAGACEAE. 161 



Family 2. SAXIFKAGACEAE Dumort. 



Saxifrage Family. 



Herbs. Flowers perfect or polygamo-dioecious. Calyx mostly 5- 

 lobed or 5-parted, free, or adnate to the ovary, usually persistent. Petals 

 usually 4 or 5, rarely none. Stamens equal in number to or twice as many 

 as the petals, in apetalous species as many or twice as many as the calj'x- 

 lobes, perigynous or epigynous; filaments distinct. Disk generally present. 

 Carpels usually 2, distinct or united, but upper portion free, mostly fewer 

 than the stamens. Seeds commonly numerous; endosperm generally 

 copious, fleshy; embryo small, terete. About 90 genera and 650 species, 

 of wide geogTaphic distribution. 



Sekika sarmentosa (L.) Moench, Strawberry Geranium, Asiatic, a 

 perennial stoloniferous herb, with tufted basal nearly orbicular leaves, and 

 small panicled white flowers borne on a scape l°-2° high, the lower petals 

 drooping, is occasional in flower-gardens. [Saxifraga sarmentosa L.] 



Heuchera sanguinea Engelm., Red Heuchera, North American, has been 

 grown, but does not succeed; it is a low perennial, with basal, reniform, lobed 

 leaves, and small red flowers, panicled on slender scapes. 



Family 3. HYDRANGEACEAE Dumort. 



Hydraxgea Family. 



Shrubs or trees with simple opposite leaves and no stipules. Flowers 

 perfect or the exterior ones of the clusters sterile and conspicuous. Petals 

 and sepals generally 5. Stamens twice as many or numerous, epigynous. 

 Carpels 2-10, wholly united or the apex free, the lower half at least en- 

 closed by and adnate to the calyx. Seeds numerous; endosperm generally 

 copious; embryo small. About 16 genera and 80 species, of temperate and 

 tropical regions. 



Philadelphus coronarius L., Garden Syringa, European, a shrub about 7° 

 high, wi'th ovate or oval thin acute serrate deciduous leaves 2'-4 long, the 

 white fragrant flowers I'-IJ' wide, in terminal racemes, with 5 petals, many 

 stamens and 3-5 styles, the fruit a top-shaped capsule, is grown for ornament. 



Hydrangea hortensis Smith, Hydrangea, Asiatic, grown for ornament, is 

 a shrulD 4°-6° high, glabrous or very nearly so, with ovate, acute or acuminate, 

 serrate leaves 8' long or less, the white, blue or pink flowers in large clusters. 



Deutzia scabra Thunb., Rough Deutzia, Asiatic, a shrub 5° or 6° high, 

 with ovate-lanceolate leaves, stellately rough-pubescent on both sides, and 

 racemose white flowers, is grown for ornament. 



Deutzia Lemoinei, a hybrid between D. gracilis and D. parviflora, with 

 corymbose flowers, is also grown. 



Family 4. GROSSULARIACEAE Dumort. 



Gooseberry Family. 



Shrubs, with often fascicled usually lobed petioled leaves, and race- 

 mose or subsolitary axillary- or lateral flowei-s, the pedicels bracteolate. 

 Calyx-tube adnate to the ovary, the limb 4-5-lobed, often colored. Petals 

 4 or 5, inserted on the throat of the calyx, small, scale-like, often included. 



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