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Macropsychanthus wilsonii

(Standl.) L.P.Queiroz & Snak (2020)

This name is accepted

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

maunaloa, sea bean, wilson's clusterpea

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Description

Key Characters:

Growth Form: Climbing or trailing lianas.

Stems:

Roots:

Leaves: Leaves compound. Alternate. Leaflets elliptic, 10–15 cm long, 7–9 cm wide. Upper surfaces glossy; lower surfaces dull, appressed pubescent. Leaflet margins entire. Lateral veins conspicuous, equidistant. Petiolate. Stipules weakly peltate, subpersistent.

Flowers: Flowers subsessile, ca. 20 mm long, in pseudoracemes 20–50 cm long, upper ½ with upcurved, short, thick flowering stems ca. 5 mm long. Flowers papilionaceous. Calyx subpersistent, Calyx 5-lobed, the upper 2 teeth partly connate. Corolla purple, keel shorter than wings, reflexed, auriculate at base, keel petals incurved. Stamens 5 fertile anthers alternating with 5 reduced ones. Stamens 10, 9 of them connate into a tube, the upper stamen distinct at base, connate to the tube at middle; anthers medifixed. Ovary superior; style incurved, thickened, glabrous apically; stigma capitate, terminal.

Fruit: Pods 7–13 cm long; 5–7 cm wide; with 2 ridges along the upper suture; densely tomentose in younger stages; glabrous when ripe. Seeds 2–3; dark brown; lenticular; 18–20 mm in diameter; with an oblong hilum over ½; the circumference of the seed.

Ploidy:

Habitat: Dry to mesic coastal areas.

Elevation Range: 5–45 m.

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Indigenous

Island Status

Kaua'i Indigenous
O'ahu Indigenous
Maui Indigenous
Hawai'i Indigenous

Dispersal Agents


Pollinators

Notes

  • 5-45 m
  • Description digitized by Rafael Domingo
  • Description digitized from the Manual of the Flowering Plants of Hawaii

Bibliography

Name Published In: PhytoKeys 164: 105 (2020)

Other References

Wagner et al. 1990:670 (K, H [as Dioclea wilsonii]); Oppenheimer 2019:6 (EM); Queiroz & Snak 2020:105 (COMBNOV, Syn. D. wilsonii = M. wilsonii); Nagata 1985:42 (status change from nat? to ind as first collected 1825 [a European introduction unlikely as only supertramp weeds and edible plants introduced so early])

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
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