. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . Family 48. HYDRANGEACEAE Dumort. .\nal. Fam. 36, 38. 1829. Hydr.'Vngea Family. Siirubs or trees or vines 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 inany as the sepals, or nuinerous, epig[\'nous. Carpels 2-10, wholly united or the apex free, the low
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . Family 48. HYDRANGEACEAE Dumort. .\nal. Fam. 36, 38. 1829. Hydr.'Vngea Family. Siirubs or trees or vines 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 inany as the sepals, or nuinerous, epig[\'nous. Carpels 2-10, wholly united or the apex free, the lower half at least enclosed by and adnate to the calyx. Seeds numerous; endosperm generally copious; embryo small. About 16 genera and 80 species, of temperate and tropical regions. Sepals and petals 5 or fewer; shrubs. Petals vahate ; stamens 8 or lo; corolla small. i. Hydrangea. Petals convolute : stamens 15-60 ; corolla large. 2. Philadelphits. Sepals and petals 7 or more : woody vine. 3. Deeumaria. I. HYDRANGEA [Gronov.] L. Sp. PL 397. 1753. Shrubs, or some .Asiatic species small trees, with opposite simple petioled leaves and ter- minal corymbose flowers. Stipules none. Exterior flowers of the corymb often apetalous, slender-pedicelled, sterile, but with enlarged and very conspicuous calyx-lobes, or sometimes the whole corymb changed to these sterile flowers; fertile flowers small. Calyx-tube (hy- panthium) hemispheric or obconic, adnate to the ovary, 4-S-lobed. Petals 4 or S, valvate. Stamens 8 or 10, inserted on the disk. Filaments filiform. Ovary 2-4-ceIled; styles 2-4, distinct, or united at the base; ovules 00. Capsule membranous, usually ^-celled, ribbed, many-seeded, dehiscent at the bases of the styles. [Greek, water-vessel, from the shape of the capsule.] About 35 species, natives of eastern North America, eastern ,\sia and the Himalayas, and South America. Besides the following, 2 or 3 others occur in the southeastern States. Type species: Hydrangea arborescens L.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
