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Vigna owahuensis

Vogel (1836)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Fabales Family: Fabaceae Genus: Vigna

vigna

Description

Key Characters:

Growth Form: Slender, twining annual or perennial herbs.

Stems: Stems usually 1–4 dm long, sparsely to densely hirsute, the hairs somewhat retrorsely appressed.

Roots:

Leaves: Leaves compound (pinnately trifoliolate or occasionally unifoliolate). Alternate. Leaflets variable in shape, from suborbicular to rhombic–ovate, linear–deltate, or linear. Leaflets membranous, 1.2–8 cm long, 0.1–2.5 cm wide. Apex bluntly acute and minutely mucronulate. Base broadly cuneate to subtruncate. Surfaces sparsely to moderately appressed hirsute. Leaflet margins entire. Petiolate. Stipules deltate, up to 2 mm long, truncate. Leaflet stipels ca. 1.5 mm long.

Flowers: Flowers 1–4 in racemes. Flowers papilionaceous, bracteoles present. Calyx green(?), 4–8 mm long, sparsely appressed hirtellous, upper 2 lobes nearly completely connate, forming a notched upper lip ca. 2.5 mm long, lateral lobes deltate, 2–3 mm long, lowest lobe ca. 3 mm long. Calyx bilabiate, 5-lobed, lower lip 3 lobed. Corolla membranous, pale yellow or greenish yellow, 20–25 mm long, standard apparently not reflexed, broadly obovate, keel distinctly beaked, the beak truncate and open at apex. Stamens 10; upper stamen distinct, the other 9 connate into a tube. Ovary superior; style with 2 rows of hairs below the stigma on each lateral side, not along the inner edge; stigma lateral.

Fruit: Pods linear; not or slightly inflated; 40–90 mm long; 4–6 mm wide; sparsely appressed hirsute; slightly or not constricted between the seeds. Seeds 7–15; gray to black; angular–ellipsoid; 3.5–6 mm long; 3–4 mm wide.

Ploidy: 2n = 22*

Habitat: Very rare; occurring primarily in dry grassland and shrubland.

Elevation Range: 10–1,370 m.

Historical Distribution

Uses and Culture

USES

Ethnobotanical Images

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Natural History

Statewide Status

Endemic

Island Status

Ni'ihau(Incl. Lehua) Endemic
O'ahu Endemic
Molokai Endemic
Lana'i Endemic
Kaho'olawe Endemic
Maui Endemic
Hawai'i Endemic

Dispersal Agents


Pollinators

Notes

  • 10-1,370 m
  • Description digitized by Ikaika Mendez
  • Description digitized from the Manual of the Flowering Plants of Hawaii
  • Rare

Bibliography

Name Published In: Linnaea 10: 585 (1836)

Other References

Wagner et al. 1990:720 (Ni, O, Mo, L, M, Ka, H [as Vigna o-wahuensis]); IPNI 2025 (spelling change to owahuensis); Wichman & St. John 1990/Stokes s.n. BISH 56260 (Ni†, 1912); Oliveira 12018 BISH (O†, 1938); Hank Oppenheimer pers. obs./Nagata 3533 BISH (L†, 1990); Paul Higashino pers. comm. 2025 (Ka†, 2002)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 230 Lanai BISH 1913-11-13
2 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Rock, J.F.C. 8680 Maui BISH 1913-08-01
3 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 230 Lanai BISH 1910-11-21
4 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 94 Lanai BISH 1914-03-01
5 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 464 Lanai BISH 1929-11-11
6 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Smith Jr., J.W. Lanai BISH 1963-07-08
7 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Rémy, J. Oahu BISH 1851-01-01
8 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Hillebrand, W.B. Hawaii BISH
9 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Stokes, J.F.G. Niihau BISH 1912-01-01
10 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Neal, M.C. Oahu BISH 1936-06-14
11 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Neal, M.C. Oahu BISH 1936-06-14
12 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Hillebrand, W.B. Hawaii BISH
13 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Dry forest/shrubland, cinder cone substrate bordered by 4000yr old a`a. Associated vegetation: Sophora chrysophylla, Pennisetum clandestinum, Styphelia tameiameiae. Preserved_Specimen Trifoliate vine, flowers yellow 1-2cm. Starr, F. 409251 Maui BISH 2004-09-13
14 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Within 20' of pine plantings. About 4 plants within an area 6 x 10 ft. Climbing on Styphelia, Dodonaea, and Wikstroemia. Associated with Sphenomeris, Psilotum, Luzula, Pteridium, Osteomeles and Metrosideros. Preserved_Specimen Height 3'. Flowers yellow, large pods green, (1 of 3 in an infl. coll.). Most leaves very narrow, few broadly ovate. Climbing. Davis, J. 854 Molokai BISH 1982-05-28
15 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details forestry planting Preserved_Specimen Anderson, S.J. 546 Molokai BISH 1983-08-28
16 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Smith Jr., J.W. Lanai BISH 1964-03-10
17 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Rémy, J. Oahu BISH 1851-01-01
18 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Lydgate, J.M. Maui BISH
19 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Hillebrand, W.B. Oahu BISH
20 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Rock, J.F.C. BISH
21 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen BISH
22 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details One single plant in grassy place. Preserved_Specimen Hosaka, E.Y. 1821 Maui BISH 1937-04-13
23 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Bottom of crater, open dryland with fine soil, flat slope. Associated vegetation: Chenopodium oahuensis, Dodonaea viscosa. Major threats: drought, competiton with invasive plant species. Preserved_Specimen Twining herb; flowers perfect. Population 0.5 sq. meter area with 100% mature plants. LeGrande, M. 1214 Kahoolawe BISH 2002-05-01
24 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details In Dodonaea viscosa lowland dry shrubland with degraded area of alien veg. assoc. with pasture grass and weeds with Sida fallax, Bidens menziesii, Chenopodium, Cocculus, Dubautia menziesii, Osteomeles, Ipomoea, Schinus, Opuntia, Conyza, Rhynchelytrum, Pennisetum setaceum, Wikstroemia. Preserved_Specimen Perlman, S. 12271 Hawaii BISH 1991-09-25
25 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Grassy slope Preserved_Specimen Twining vine; flowers greenish-white Fosberg, F.R. 12943 Oahu BISH 1936-02-16
26 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details In forestry planting of tropical ash and pine, along jeep road. Preserved_Specimen Vine climbing over Melinis, Verbena, and Dodonaea. Ht. 3', area 10 x 12 ft. Flowers numerous, dull yellow, only immature pods seen. Leaves dimorphous, most of plant with broad ovate lvs. Davis, J. 850 Molokai BISH 2002-05-28
27 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details 1000 m. Grass common, growing over grasses, dry situation. Preserved_Specimen Prostrate on grass. Flower: lower plart yellow; standard brownish yellow. a Cooke Jr., C.M. 5 Maui BISH 1927-05-16
28 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details About 20 plants sprouting and growing in an area about 10' X 10'. Growing on a remnant of soil surrounded by Andropogon pertusus. Preserved_Specimen Plants all young and sterile. Hobdy, R.W. 1220 Kahoolawe BISH 1982-02-12
29 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details On slopes of cone. Preserved_Specimen Frequent herb, soft, twining, to 1 1/2'. Dull yellow flowers seen on plants elsewhere on cone. Few, plants young. Cuddihy, L.W. 236 Hawaii BISH 1980-03-20
30 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Windswept, arid scrub of Melinis, Dodonaea, & Lantana amid erosional scars. Preserved_Specimen Standard 2.6-2.9 cm long, 1.8 cm wide. Keel to 2.7 cm long. Nagata, K.M. 3533 Lanai BISH 1986-06-06
31 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details steep slope; on grass, Emilia and Lantana Preserved_Specimen flowers brownish yellow Oliveira, J.M. Oahu BISH 1933-06-12
32 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details in gravelly, rocky site in grassy area of Lowland Dry Forest. Vegetation: Nestegis, Diospyros, Alectryon, Wikstroemia, Ochrosia, Streblus, Pouteria, Chrysodracon, Bocconia, Lantana, Cenchrus, Melinis, Asclepis, Neonotonia. Preserved_Specimen Postrate herbs, tinged red. Patch approximately 10x15 m, unknown number of plants twining in and on kikuyu grass, molasses grass, glycine, lantana, and Akia. Oppenheimer, H.L. 12003 Maui BISH 2020-01-08
33 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details On dry fossil reef below cliffs and above sugar cane field Preserved_Specimen Degener, O. 6098 Oahu BISH 1927-04-13
34 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details to 4' on Pinus, and on ground with Cynodon dactylon and Bromus rigidus; in pine planting Preserved_Specimen flowers yellow; covers 10x20' area Anderson, S.J. 546 Molokai BISH 1982-05-28
35 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Grass Preserved_Specimen Tortuous clumps Hobdy, R.W. 1664 Kahoolawe BISH 1982-08-12
36 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Nohonaohae cinder cone in pasture. Preserved_Specimen Viny herb 12-18 inches high. Flowers few, dull yellow. Davis, J. 244 Hawaii BISH 1980-03-19
37 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 129 Lanai BISH 1913-09-26
38 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Climbing on Pinus and on ground with Cyodon dactylon and Bromus rigidus. Plant covers an area 10 x 20 feet in pine planting. Preserved_Specimen Vine climbing to 4 feet and sprawling on ground. Flowers yellow. Anderson, S.J. 546 Molokai BISH 1982-05-28
39 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Vine climbing over Melinis, Verbena and Dodonaea. In forestry planting of tropical ash & pine. Preserved_Specimen Flowers numerous, dull yellow, only immature pods seen. Leaves dimorphous, most of plant with broad ovate lvs. Davis, J. 850 Molokai BISH 1982-05-28
40 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Large patch on fairly steep slope of lower peak; twining on grass and lantana Preserved_Specimen Flowers brownish-yellow Oliveira, J.M. 12018 Oahu BISH 1938-06-12
41 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details On an a`a lava flow, climbing surrounding vegetation & sprawling on ground. Assoc. veg.: Sida fallax, Leucaena leucocephala, Lipochaeta sp., Ageratum conyzoides, Portulaca pilosa, Tridax procumbens, Dodonaea viscosa, Waltheria indica, Rhynchelytrum repens, Emilia sp. Preserved_Specimen Oppenheimer, H.L. 199 Maui BISH 1997-03-28
42 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Fl. whitish-green. Hosaka, E.Y. 2483 Hawaii BISH 1939-04-18
43 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details dry fossil reef below cliffs and above sugar cane fields Preserved_Specimen Degener, O. 6098 Oahu BISH 1927-04-13
44 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Char, W.P. 78.074 Kahoolawe BISH 1978-11-25
45 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Hillebrand, W.B. Oahu BISH
46 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Mann, H. 445 Maui BISH 1864-01-01
47 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Hosaka, E.Y. 1821 Maui BISH 1937-04-13
48 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Rock, J.F.C. 14023 Molokai BISH 1918-05-24
49 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 124 Lanai BISH 1913-09-26
50 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. Lanai BISH 1914-01-01
51 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Rock, cinder substrate, soil dry w. good drainage; flat slope.. Associated species: Chenopodium carinatum, Indigofera suffruticosa, Momordica charantia, Merremia aegyptia, Dodonaea viscosa, Senna gaudichaudii, Ageratum conyzoides. Threats: Weed competition, low population size, Botanist trampling, over collection, drought. Preserved_Specimen Population size approx. 22 individual patches. Jokiel, J. Maui BISH 2002-05-20
52 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 465 Lanai BISH 1929-11-11
53 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 555 Lanai BISH 1929-12-31
54 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 556 Lanai BISH
55 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Munro, G.C. 8 Lanai BISH 1927-05-28
56 Vigna owahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 237 Lanai BISH 1913-06-01
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