Dioscoreaceae

Dioscorea L.

Last edited by Pieter B. Pelser, 27 June 2021

Photos
  1. Dioscorea alata L., Sp. Pl. (1753) 1033; --Merr., Fl. Manila (1912) 151; EPFP 1 (1922) 215; --Burkill, Fl. Males. ser. 1, 4 (1951) 330. Bangladesh, Bismarck Arch, Borneo, Cambodia, India, Java, Lesser Sunda Isls, Myanmar, Nepal, New Guinea, Peninsular Malaysia, Sulawesi, Sumatra, Thailand, Vietnam, Philippines. Native of continental Asia and cultivated all over Malesia. Naturalized in the Philippines. Photos
  2. Dioscorea bulbifera L., Sp. Pl. (1753) 1033; --Merr., Fl. Manila (1912) 151; EPFP 1 (1922) 215; --Burkill, Fl. Males. ser. 1, 4 (1951) 311. Andaman Isls, Australia, Africa, Bangladesh, Borneo, Cambodia, China, India, Indian Ocean, Japan, Java, Korea, Laos, Lesser Sunda Isls, Myanmar, Nepal, New Guinea, Pacific, Pakistan, Peninsular Malaysia, Ryukyu Isls, Sri Lanka, Sulawesi, Sumatra, Taiwan, Thailand, Vietnam, Philippines. Photos
  3. Dioscorea cumingii Prain & Burkill, J. As. Soc. Beng. ii, 4 (1908) 449; --Merr., EPFP 1 (1922) 216; --Burkill, Fl. Males. ser. 1, 4 (1951) 317. --Dioscorea echinata R.Knuth in Engl., Pflanzenreich 87 (1924) 148; --Merr., EPFP 4 (1925) 242. Taiwan, Philippines.
  4. Dioscorea divaricata Blanco, Fl. Filip. (1837) 797; --Merr., EPFP 1 (1922) 216; --Burkill, Fl. Males. ser. 1, 4 (1951) 332. --Dioscorea oxyphylla R.Knuth in Engl., Pflanzenreich 87 (1924) 269; --Merr., EPFP 4 (1925) 242. --Dioscorea soror Prain & Burkill in Elmer, LPB 5 (1913) 1598; --Merr., EPFP 1 (1922) 219. --Dioscorea soror var. glauca Prain & Burkill, J. As. Soc. Beng. ii, 10 (1914) 34; --Merr., EPFP 1 (1922) 219. Endemic to the Philippines. CEBU, LUZON: Bataan, Bulacan, Ilocos Norte, Laguna, Mountain Province, Pampanga, Pangasinan, Quezon, Rizal, PANAY. Low and medium elevation thickets and secondary forests.
  5. Dioscorea elmeri Prain & Burkill in Elmer, LPB 5 (1913) 1594; --Merr., EPFP 1 (1922) 216; --Burkill, Fl. Males. ser. 1, 4 (1951) 317; --Type: Elmer 9156 (K, lecto; CAL, GH, isolecto), Luzon: Lucban, Tayabas Island, May-1907. Endemic to the Philippines. BATANES, LUZON: Laguna, Quezon, SAMAR. Low elevation everwet forests, to 800m.
  6. Dioscorea esculenta (Lour.) Burkill, Gard. Bull. Straits Settl. 1 (1917) 396; --Merr., Fl. Manila (1912) 151; EPFP 1 (1922) 216; --Burkill, Fl. Males. ser. 1, 4 (1951) 307; --Oncus esculentus Lour., Fl. Cochinch. (1790) 194. Bangladesh, Bismarck Arch, Borneo, Cambodia, India, Java, Lesser Sunda Isls, Moluccas, Myanmar, Nepal, New Guinea, Peninsular Malaysia, Sulawesi, Sumatra, Thailand, Vietnam, Philippines. BATANES, LUZON: Bataan, Benguet, Bulacan, Cagayan, Laguna, La Union, Nueva Vizcaya, Pangasinan, Rizal, SEMIRARA. Low elevation thickets and secondary forests. Also often cultivated.
  7. Dioscorea filiformis Blume, Enum. Pl. Jav. 1 (1827) 22; --Merr., EPFP 1 (1922) 217; --Burkill, Fl. Males. ser. 1, 4 (1951) 329. Borneo, Java, Lesser Sunda Isls, Moluccas, Peninsular Malaysia, Sulawesi, Sumatra, Thailand, Philippines. CULION, JOLO, LUZON: Bataan, Batangas, Laguna, Nueva Ecija, Rizal, PALAWAN. Low elevation thickets and ravines.
  8. Dioscorea flabellifolia Prain & Burkill in Elmer, LPB 5 (1913) 1593; --Merr., EPFP 1 (1922) 217; --Burkill, Fl. Males. ser. 1, 4 (1951) 309; --Type: Elmer 9095 (B, lecto; CAL, isolecto), Luzon: Tayabas. Borneo, Pacific, Philippines. CATANDUANES, LUZON: Laguna, Sorsogon, MINDORO. Low and medium elevation humid forests. Photos
  9. Dioscorea grata Prain & Burkill, J. As. Soc. Beng. ii, 10 (1914) 35; --Merr., EPFP 1 (1922) 217; --Burkill, Fl. Males. ser. 1, 4 (1951) 328; --Type: Loher 7017 (K, lecto), Luzon: Rizal, Montalban. New Guinea, Philippines. LUZON: Rizal. No Philippine data on habitat, but in New Guinea reported at 300m in Agathis forest.
  10. Dioscorea hispida Dennst., Schlüssel Hort. Malabar. (1818) 33; --Merr., EPFP 1 (1922) 217; --Burkill, Fl. Males. ser. 1, 4 (1951) 318. Andaman Isls, Australia, Bangladesh, Bismark Arch, Borneo, Cambodia, China, India, Java, Lesser Sunda Isls, Moluccas, Myanmar, Nepal, New Guinea, Peninsular Malaysia, Sulawesi, Sumatra, Taiwan, Thailand, Tibet, Vietnam, Philippines. Photos
  11. Dioscorea loheri Prain & Burkill, J. As. Soc. Beng. ii, 10 (1914) 33; --Merr., EPFP 1 (1922) 217; --Burkill,  Fl. Males. ser. 1, 4 (1951) 332. Endemic to the Philippines. LUZON: Rizal. Low elevation thickets. According to Merrill (1922) perhaps referable to Dioscorea divaricata Blanco.
  12. Dioscorea luzonensis Schauer, Nov. Act. Acad. Nat. Cur. 19 Suppl. 1 (1843) 444; --Merr., EPFP 1 (1922) 218; --Burkill, Fl. Males. ser. 1, 4 (1951) 325. Endemic to the Philippines. LUZON: Batangas, Bulacan, Ilocos Norte, Ilocos Sur, Laguna, La Union, Mountain Province, Nueva Vizcaya, Quezon, Rizal, PALAWAN. Chiefly at low and medium elevation thickets. Common in the provinces near Manila where there are two drier breaks in the year. Fl. Sep or earlier.
  13. Dioscorea merrillii Prain & Burkill in Elmer, LPB 5 (1913) 1598; --Merr., EPFP 1 (1922) 218; --Burkill, Fl. Males. ser. 1, 4 (1951) 332. Endemic to the Philippines. MINDANAO: Davao, MINDORO. Old clearings and thickets, c. 700m.   
  14. Dioscorea nummularia Lam., Encycl. Meth. 3 (1789) 231; --Merr., EPFP 1 (1922) 218; --Burkill, Fl. Males. ser. 1, 4 (1951) 331. --Dioscorea nummularia var. glauca Prain & Burkill, J. As. Soc. Beng. ii, 10 (1914) 35; --Merr., EPFP 1 (1922) 218. Andaman Isls, Bismarch Arch, Borneo, Java, Moluccas, New Guinea, Sulawesi, Vietnam, Philippines. BASILAN, CAMIGUIN, LEYTE, LUZON: Mountain Province, Sorsogon, MINDANAO, POLILLO. In most or all provinces in Luzon. Low and medium elevation thickets.
  15. Dioscorea palawana Prain & Burkill, Kew Bull. (1925) 59; --Merr., EPFP 4 (1925) 242; --Burkill, Fl. Males. ser. 1, 4 (1951) 305. Endemic to the Philippines. PALAWAN. Conservation status: Vulnerable (DAO 2017-11).
  16. Dioscorea pentaphylla L., Sp. Pl. (1753) 1032; --Merr., Fl. Manila (1912) 152; EPFP 1 (1922) 218; --Burkill, Fl. Males. ser. 1, 4 (1951) 315. Australia, Bangladesh, Borneo, Cambodia, China, India, Indian Ocean, Java, Laos, Lesser Sunda Isls, Moluccas, Myanmar, Nepal, New Guinea, Pacific, Peninsular Malaysia, Ryukyu Isls, Sri Lanka, Sulawesi, Sumatra, Taiwan, Thailand, Tibet, Vietnam, Philippines.
  17. Dioscorea peperoides Prain & Burkill in Elmer, LPB 5 (1913) 1597; --Merr., EPFP 1 (1922) 219; --Burkill, Fl. Males. ser. 1, 4 (1951) 325; --Type: Elmer 6399 (NYBG, lecto; CAL, isolecto), Luzon: Benguet, Twin-peaks, May-1904. Vietnam, Philippines.

Excluded and doubtful species:

  1. Dioscorea mindanaensis R.Knuth in Engl., Pflanzenreich 87 (1924) 271; --Merr., EPFP 1 (1925) 242. Burkill (1951): “The name is virtually a nomen nudum, the scrap of which it was given being inadequate even for the establishment of the section. But it is interesting to know that a Dioscorea occurs on the E slopes of Mt Apo in Mindanao (S Philippines) at that considerable height of 2000m”. Endemic to the Philippines.
  2. Dioscorea wilkesii Uline ex R.Knuth in Engl., Pflanzenreich 87 (1924) 271; --Merr., EPFP 4 (1925) 242. LUZON: Laguna. Known from Wilkes Expedition s.n., Laguna, Los Baños. Apparently unaccounted for in Burkill (1951). Synonym of Dioscorea loheri Prain & Burkill?

Stenomeris Planch.

Last edited by Pieter B. Pelser, 27 June 2021

Photos
  1. Stenomeris borneensis Oliv. in Hook., Icon. Pl. 4 (1894) t. 2328; --Burkill, Fl. Males. ser. 1, 4 (1951) 297. --Stenomeris mindanaensis R.Knuth in Engl., Pflanzenreich 87 (1924) 345; --Merr., EPFP 1 (1925) 242; --Caddick & Wilkin, Kew Bull. 53 (1998) 710. Borneo, Peninsular Malaysia, Sumatra, Philippines. MINDANAO: Agusan, Davao, Surigao del Norte (photos), Zamboanga. Photos
  2. Stenomeris dioscoreifolia Planch., Ann. Sci. Nat. Bot. iii, 18 (1852) 320; --Merr., EPFP 1 (1922) 219; --Burkill, Fl. Males. ser. 1, 4 (1951) 295; --Caddick & Wilkin, Kew Bull. 53 (1998) 709. --Stenomeris cumingiana Becc., Nuov. Giorn. Bot. Ital. 2 (1870) 8; --Merr., EPFP 1 (1922) 219. --Stenomeris wallisii Taubert in Engl., Bot. Jahrb. 15 Beibl. 38 (1893) 2; --Merr., EPFP 1 (1922) 220. Endemic to the Philippines. BILIRAN, CATANDUANES, LUZON: Albay, Aurora, Cagayan, Isabela, Laguna, Quezon, Rizal, Sorsogon, MINDORO, ROMBLON, SUBUYAN. Photos

Literature

Antonio, MA & IE Buot Jr. 2021. Characterization and delineation of two infraspecific taxa of Dioscorea esculenta (Lour.) Burkill: The leaf architecture approach. Biodiversitas 22: 1783-1789

Caddick, LR & P Wilkin. 1998. A revision of the genus Stenomeris (Dioscoreaceae). Kew Bulletin 53: 703-712.

Burkill, IH. 1951. Dioscoreaceae. Flora Malesiana series 1, 4: 293-336

DENR Administrative Order. 2017. Updated national list of threatened Philippine plants and their categories. DAO 2017-11

Hsu, KM, JL Tsai, MY Chen, HM Ku & SC Liu. 2013. Molecular phylogeny of Dioscorea (Dioscoreaceae) in East and Southeast Asia. Blumea 58: 21-27


Pagare, RS & W Arisdason. 2016. Lectotypification in the genus Dioscorea L. (Dioscoreaceae). Webbia 71: 73-81.

Pelser, P.B., J.F. Barcelona & D.L. Nickrent (eds.). 2011 onwards. Co's Digital Flora of the Philippines. www.philippineplants.org

Copyright © 2011, Co's Digital Flora of the Philippines

Last updated 27 June 2021