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Project Name Data (Last Modified On 11/13/2012)
 

Flora Data (Last Modified On 11/13/2012)
Genus HYDRANGEA L.
PlaceOfPublication Sp. P1. 397. 1753.
Synonym Cornidia Ruiz & Pav. Fl. Peruv. et Chil. Prodr. 53, t. 35. 1794. Sarcostyles Presi, ex DC. Prodr. 4:15. 1830.
Description Woody climbers or shrubs, inflorescence and adjacent stem pubescent with stellate hairs, or tomentose with long, curling silky hairs. Leaves opposite, simple, blades penninerved, margins remotely denticulate or entire, oval, broadest near middle, petiole stout. Inflorescence cymose (in Central America), terminal, or occasionally lateral, subtended by chartaceous, caducous involucral bracts; sterile flowers showy, pink or white, not always present; fertile flowers white or maroon, small; hypanthium hemispheric; calyx-lobes 4, inconspicuous, deltoid; petals 4, oblong, valvate, deciduous during anthesis; stamens 8, occasionally 10, filaments long and filiform or short and inconspicuous, anthers oblong to somewhat rounded; ovary inferior, 2- to 4-celled, styles 2-4, erect and spreading, or occasionally co- herent in bud and early anthesis, continuing to elongate with the maturing capsule; stigmas terminal and more or less decurrent on inner surface; ovules numerous, borne on axial placentae; capsule 2- to 4-celled, truncate, thick-walled, dehiscent at apex between the spreading styles; seeds numerous, very small, linear, arcuate.
Habit climbers shrubs
Key a. Sterile flowers present; styles usually 2, slender or clavate. b. Stamens conspicuous, filaments 1-3.5 mm. long, 2-7 times as long as styles; styles (during anthesis) less than 1 mm. long, slender, acute at apex- -.... ...................................................... 1. H . OERSTEDII bb. Stamens inconspicuous, filaments 0.2-0.9 mm. long, shorter than styles; styles (during anthesis) 1-2 mm. long ....................................... 2. H. PERUVIANA aa. Sterile flowers absent; styles usually 3, thickened at base .......................... 3. H. PRESLII
 
 
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