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Dioscoreaceae

including Taccaceae

Dioscorea L.

Last edited by Pieter B. Pelser, 22 May 2018

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. Native of continental Asia and cultivated all over Malesia. 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. 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. LUZON: Ilocos Norte, Mountain Province, Pangasinan, Pampanga, Bataan, Bulacan, Rizal, Laguna, Quezon, PANAY, CEBU. 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. India to Malesia and Polynesia, native only to Thailand and Indochina. BATANES, LUZON: La Union, Benguet, Cagayan, Nueva Vizcaya, Pangasinan, Bataan, Bulacan, Rizal, Laguna, 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. Peninsular Thailand, Peninsular Malaysia, NE Sumatra, Philippines, Java, Lesser Sunda Isls, Moluccas. LUZON: Nueva Ecija, Bataan, Rizal, Laguna, Batangas, CULION, PALAWAN, JOLO. 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. Palau, Borneo (Sabah), Philippines. LUZON: Laguna, Sorsogon, CATANDUANES, 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. Philippines, NW New Guinea. 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. 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: Ilocos Norte, Ilocos Sur, La Union, Mountain Province, Nueva Vizcaya, Bulacan, Rizal, Laguna, Batangas, Quezon, 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. MINDORO, MINDANAO: Davao (Mt Apo). 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. Pacific as far as Tahiti (where perhaps an introduced plant) to E Malesia, westward to N corner of Borneo and Sulawesi, and the Philippines. Not yet recorded from the Lesser Sunda Isls. LUZON: Mountain Province to Sorsogon, in most or all provinces, POLILLO, LEYTE, CAMIGUIN, MINDANAO, BASILAN. 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. N 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.
  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, Los Banos), Wilkes Expedition s.n. Apparently unaccounted for in Burkill (1951). Synonym of Dioscorea loheri Prain & Burkill?

Stenomeris Planch.

Last edited by Pieter B. Pelser, 16 September 2018

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. Sumatra (E Coast), Peninsular Malaysia, Borneo, Philippines. MINDANAO: Surigao del Norte (photos). 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. --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. Photos

Tacca J.R.Forst. & G.Forst.

Last edited by Pieter B. Pelser, 22 May 2018

Photos
  1. Tacca leontopetaloides (L.) Kuntze, Rev. Gen. Pl. 2 (1891) 704; --Drenth, Blumea 20 (1972) 375; Fl. Males. ser. 1, 7 (1976) 809; --Leontice leontopetaloides L., Sp. Pl. (1753) 313. --Tacca pinnatifida J.R.Forst. & G.Forst., Char. Gen. (1776) 70; --Merr., Fl. Manila (1912) 150; EPFP 1 (1922) 215. Tropical Old World to Pacific. Andaman Isls, Africa, Bangladesh, Bismarck Archipelago, Borneo, Cambodia, Caroline Isls, Pacific, India, Java, Laos, Lesser Sunda Isls, Malaysia, Maldives, Moluccas, Myanmar, New Caledonia, New Guinea, Nicobar Isls, Australia, Sri Lanka,  Sulawesi, Sumatra, Taiwan, Thailand, Vietnam, Philippines. Photos
  2. Tacca palmata Blume, Enum. Pl. Jav. 1 (1827) 83; --Merr., Fl. Manila (1912) 150; EPFP 1 (1922) 214; --Drenth, Blumea 20 (1972) 397; Fl. Males. ser. 1, 7 (1976) 814. --Tacca elmeri Krause in Elmer, LPB 6 (1914) 2283; --Merr., EPFP 1 (1922) 214. Borneo, Cambodia, Java, Lesser Sunda Isls, Malaysia, Moluccas, New Guinea, Sulawesi, Sumatra, Thailand, Vietnam, Philippines. Photos

Literature

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

Drenth, E. 1976. Taccaceae. Flora Malesiana series 1, 7: 806-819

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 16 September 2018