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A hydrangea in the flower garden.
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Hydrangea (/haɪˈdreɪndʒiə/; common names hydrangea or hortensia) is a genus of 70–75 species of flowering plants native to Asia and the Americas. By far the greatest species diversity is in eastern Asia, notably Korea, China, and Japan. Most are shrubs 1 to 3 meters tall, but some are small trees, and others lianas reaching up to 30 m (98 ft) by climbing up trees. They can be either deciduous or evergreen, though the widely cultivated temperate species are all deciduous.
Having been introduced to the Azores, H. macrophylla is now very common, particularly on Faial, which is known as the "blue island" due to the vast number of hydrangeas present on the island.
‘Hydrangea’ is derived from Greek and means ‘water vessel’, which is in reference to the shape of its seed capsules. The earlier name, Hortensia, is a Latinised version of the French given name Hortense, referring to the wife of Jean-André Lepaute.
(EN) Macro of hydrangea flower.
(PT) Fotografia macro de uma hortência.
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Hortensia (Hydrangea) is een geslacht bloeiende planten uit de hortensiafamilie (Hydrangeaceae). Er zijn ongeveer 100 soorten verspreid over de hele wereld, waarvan sommige in het wild voorkomen. Vooral in China en Japan komen hortensia's veel voor.
De bloemen zijn roze, paars, wit of blauw afhankelijk van het pH (zuurgraad) van de bodem: In zure gronden worden de bloemen blauw, in basische gronden roze en in pH-neutrale bodems paars. uit: nl.wikipedia.org/wiki/Hortensia
Zellerbach Garden
San Francisco Botanical Garden ✿ Strybing Arboretum
Golden Gate Park, San Francisco
April 2021
Hydrangea flowers are produced from early spring to late autumn; they grow in flowerheads (corymbs or panicles) most often at the ends of the stems. Typically the flowerheads contain two types of flowers: small non-showy flowers in the center or interior of the flowerhead, and large, showy flowers with large colorful sepals (tepals). These showy flowers are often extended in a ring, or to the exterior of the small flowers. Plants in wild populations typically have few to none of the showy flowers, while cultivated hydrangeas have been bred and selected to have more of the larger type flowers.
The name Hydrangea is derived from Greek and means ‘water vessel’ (hydria), in reference to the shape of its seed capsules.
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