Mucuna papuana Adema, 2016

Wiriadinata, H., Ohashi, H. & Adema, F., 2016, Notes on Malesian Fabaceae (Leguminosae-Papilionoideae) 16. The genus Mucuna, Blumea 61 (2), pp. 90-124 : 113

32. Mucuna papuana Adema , stat. nov. & nom. nov. — Fig. 6

Mucuna pruriens (L.) DC. subsp. novo-guineensis Verdc.(1978a) 462; (1979) 453. — Type: Hartley 10172 (CANB, K, L, LAE ), Papua New Guinea, Morobe Prov., Burep River, NE of Lae .

Distribution — Malesia: Irian Jaya: Ayawasi; Papua New Guinea: Morobe, W Sepik.

Habitat & Ecology — Primary and secondary forest, regrowth, roadsides, bushes, streamside in grassland, savannah, dry gully. Altitude up to 1100 m. Flowering: April to June, September, October, December; fruiting: April, June, September, November.

Note — Most specimens are collected in Morobe Prov., PNG. One collection from Irian Jaya (Ridsdale 2252, Ayawasi) is included here. Probably also a collection from W Sepik Prov., PNG (Hoover 439) belongs to the present species. However, the last specimen is collected at a much higher altitude (600–1100 m). Verdcourt (1979) cites several specimens seen by him in Lae and remarks that the specimens cited by Schumann & Lauterbach (1901: 365) as M. pruriens may be referable to the present species. However, no duplicates of these specimens (Hollrung 147, Lauterbach 15, 461, 2092, 2279) were seen by Verdcourt, Wiriadinata or Adema.

Figures

Fig. 6 Mucuna papuana Adema. a. Habit; b. detail of lower leaflet surface; c. detail of upper leaflet surface; d. bud with bracteoles; e. part of infructescence with immature fruits;f. detail of fruit indumentum; g. calyx opened, from outside; h. detail of calyx indumentum; i. standard;j. wing petal;k. keel petal; l. stamens, sheath opened; m. ovary and style (a–c, e, f: Hartley 10172; d: Hoover 493; g–m: NGF 29884 (Coode)). — Drawing Margaret Tebbs.