Hydrangeaceae

Deutzia Thunb.

Last edited by Pieter B. Pelser, 11 August 2024
  1. Deutzia pulchra S.Vidal, Revis. Pl. Vasc. Filip. (1886) 124; Merrill, EPFP 2 (1923) 218; Pan et al., Fl. China 8 (2001) 269; Type: Vidal 1362 (MA, syn), Luzon: Lepanto. = Deutzia acuminata Merr., PJS 12c (1917) 266; Merrill, EPFP 2 (1923) 218. Distribution: Philippines, Taiwan. LUZON: Abra, Apayao (photos), Aurora, Benguet, Ifugao, Ilocos Sur, Mountain Province, Nueva Ecija, Nueva Vizcaya, Pampanga, Zambales, PANAY. Notes: Commonly in the montane zone, in thickets, exposed ridges, ravines and clearings in the mossy forests. 1000-2400m. Native.

Hydrangea L.

Last edited by Pieter B. Pelser, 19 July 2026
  1. Hydrangea chinensis Maxim., Mém. Acad. Imp. Sci. St.-Pétersbourg, 7th Sér. 10 (1867) 7; ≡ Hydrangea scandens ssp. chinensis (Maxim.) McClint., Proc. Calif. Acad. Sci. 29 (1957) 206; Type: from Taiwan. = Hydrangea lobbii Maxim., Mém. Acad. Imp. Sci. St.-Pétersbourg, 7th Sér. 10 (1867) 15; Merrill, EPFP 2 (1923) 219. = Hydrangea pubiramea Merr., PJS 12c (1917) 267; Merrill, EPFP 2 (1923) 219. = Hydrangea pubiramea var. parvifolia Merr., PJS 12c (1917) 267; Merrill, EPFP 2 (1923) 219. Distribution: China, Philippines, Taiwan. BATANES, LUZON: Apayao (photos), Aurora, Benguet, Ilocos Sur, Laguna, Mountain Province, Nueva Ecija, Nueva Vizcaya (photos), Quezon, MINDANAO: Bukidnon (photos), Cotabato (photos), Davao de Oro (photos), Davao del Sur (photos), Misamis Occidental, Misamis Oriental (photos), Sultan Kudarat (photos), NEGROS (photos), PANAY (photos). Notes: Batanes and Luzon to Mindanao. Absent from Palawan. Mossy forests on most of the higher mountains, also reported at c. 300m in Nueva Ecija. (300-)940m (photos) to 1000-2400m. Native.
  2. Hydrangea febrifuga (Lour.) Y.De Smet & C.Granados, Taxon 64 (2015) 750; Malabrigo et al., Flora of Mt Mantalingahan Protected Landscape (2023) 134; ≡ Dichroa febrifuga Lour., Fl. Cochinch. (1790) 301; Fern.-Vill., Novis. App. (1880) 77; S.Vidal, Phan. Cuming. Philip. (1885) 111. = Dichroa philippinensis Schltr., Bot. Jahrb. Syst. 52 (1914) 122; Merrill, EPFP 2 (1923) 219; Hwang, Act. Phytotax. Sin. (1987) 386; Type: Curran & Merritt 807 (syn); Elmer 9458 (syn), Luzon. Distribution: Bhutan, Cambodia, China, India, ?Indonesia, Laos, Myanmar, Nepal, Philippines, Taiwan, Thailand, Vietnam. CAMIGUIN, CATANDUANES, LEYTE, LUZON: Albay, Apayao, Batangas, Benguet, Camarines, Camarines Sur, Ifugao, Laguna, Quezon, Rizal, Sorsogon, Zambales, MINDANAO: Bukidnon, Davao de Oro (photos), Davao del Sur, MINDORO, NEGROS, PALAWAN, PANAY. Notes: 1600m (photos). Native.
  3. Hydrangea integrifolia Hayata, J. Coll. Sci. Imp. Univ. Tokyo 22(2) (1906) 131. = Hydrangea cuneatifolia Elmer, LPB 8 (1915) 2825. = Hydrangea glandulosa Elmer, LPB 2 (1908) 473; Merrill, EPFP 2 (1923) 218. = Hydrangea subintegra Merr., PJS 3c (1908) 408; Merrill, EPFP 2 (1923) 219. Distribution: Philippines, Taiwan. BATAN, LEYTE, LUZON: Aurora, Benguet, Ifugao, Laguna, Mountain Province, Nueva Vizcaya, Rizal, MINDANAO: Bukidnon, Cotabato, Davao, Davao del Sur, Misamis Oriental (photos), NEGROS, SIBUYAN. Notes: Usually in the mossy forest. Thickets or open forests. 900-2200m. Native.
  4. Hydrangea ofeliae Sodusta & Lumawag, Phytotaxa 411 (2019) 123; ≡ Dichroa platyphylla Merr., PJS 11c (1916) 13; Merrill, EPFP 2 (1923) 219; Hwang, Act. Phytotax. Sin. (1987) 388; Type: BS 23416 Ramos (K, holo; L, NY, US, iso), Luzon: Sorsogon, Mt Lalao, in damp forests, 11-Aug-1915. = Dichroa thyrsoidea Elmer, LPB 10 (1939) 3807, nom. inval., in obs., pro syn. Distribution: Endemic to the Philippines. CATANDUANES, LEYTE, LUZON: Albay, Sorsogon, MINDORO. Notes: Damp forests at medium elevation. Note by P.B. Pelser (22-Jul-19): Hydrangea ofeliae (as Dichroa platyphylla) is considered a synonym of Hydrangea febrifuga in some online databases, but J.V. LaFrankie (pers. comm., 6-Jun-16) considers it taxonomically distinct. Native.

Cultivated, not naturalized

  1. Hydrangea macrophylla (Thunb.) Ser., Prodr. (A. P. de Candolle) 4 (1830) 15; ≡ Viburnum macrophyllum Thunb., Syst. Veg., 14th Ed. (1784) 295. = Hydrangea hortensia Siebold, Nov. Actorum Acad. Caes. Leop.-Carol. Nat. Cur. 14 (1828) 688. Distribution: Japan. Notes: Unlikely to be naturalized (J.V. LaFrankie, 8-Jun-16); originally from Japan, cultivated elsewhere. Cultivated, not naturalized.

References