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This species is accepted, and its native range is Ethiopia to Malawi.
A specimen from Kew's Herbarium

[FZ]

Leguminosae, various authors. Flora Zambesiaca 3:7. 2003

Morphology General Habit
Straggling or climbing perennial herb; rootstock not seen but probably small.
Morphology Stem
Stems numerous, much branched, 0.5–1.5 mm in diameter, at first pubescent, later glabrous or subglabrous.
Morphology Leaves
Leaves 2-foliolate; leaflets 13–65 × 2–12 mm, linear to elliptic, acute to rounded but mucronulate at the apex, cuneate at the base, glabrous to pilose on both surfaces or only beneath, sometimes with numerous small red ellipsoid glands; petiole 3–15 mm long, very narrowly winged, produced beyond the leaflets into an unbranched tendril; petiolules 0.5–1 mm long; stipules 5–12 mm long, narrowly semi-sagittate with the lobes narrow, sometimes with a small tooth between the lobes.
Morphology Reproductive morphology Flowers
Flowers solitary or less often paired; peduncle 2–25(33) mm long, pubescent; pedicels 4–6 mm long, pubescent; bract 1–1.3 mm long, hyaline, subulate, soon caducous or absent.
Morphology Reproductive morphology Flowers Calyx
Calyx pubescent or pilose to glabrous; tube 2–2.5 mm long; lobes 2–5.5 mm long, narrowly triangular-subulate.
Morphology Reproductive morphology Flowers Corolla
Corolla whitish, purplish or pinkish,11–13 mm long; standard greenish-white, pinkish or yellowish, usually with purple lines inside, 12–13 × 9 mm, obovate, emarginate, narrowed to the base into a 4 mm long, broad claw; wings c. 11 mm long, the lamina falcate-obovate, with a short conjunctival flap above the auricle and adhering to the keel; keel a little shorter than the wings, incurved, obtuse, the lamina slightly pouched above the small auricles, the claw c. 4 mm long, straight.
Morphology Reproductive morphology Flowers Androecium Stamens
Vexillary stamen adhering to the others; filament sheath 7–7.5 mm long; free parts of the filaments 5–5.5 mm long.
Morphology Reproductive morphology Flowers Gynoecium Style
Style 4–5 mm long, pubescent towards the apex on the upper side.
Morphology Reproductive morphology Fruits
Pod 25–48 × 5–6 mm, linear-oblong, laterally compressed, glabrous to pubescent or ciliate on the margins; valves with a scarcely evident reticulate venation.
Morphology Reproductive morphology Seeds
Seeds usually 5–8, dark brown to purplish-brown, with maximum dimensions of 4.1 × 2.9 × 1.8 mm, subglobose to ellipsoid.

[FTEA]

Leguminosae, J. B. Gillett, R. M. Polhill & B. Verdcourt. Flora of Tropical East Africa. 1971

Morphology General Habit
Straggling or climbing herb 0·3–2·1 m. long, often considered to be an annual, but no rootstocks preserved and, judging by the woody bases of some stems and several field notes, probably always a perennial.
Morphology Stem
Stems much branched, at first usually pubescent, later glabrous, sometimes with sparse to dense small red glands.
Morphology Leaves
Leaves 2-foliolate; leaflets linear to elliptic or lanceolate, 1·1–7 cm. long, 0·15–1·4 cm. wide, acute to narrowly rounded but mucronulate at the apex, cuneate at the base, glabrous to pubescent and often with pale dots on both surfaces; petiole 0·2–2 cm. long, generally terminated by an unbranched tendril; stipules narrowly semisagittate, 0·5–1·2 cm. long, the lobes narrow.
Morphology Reproductive morphology Flowers
Flowers solitary or, less often, paired; peduncle 0·2–2 cm. long; pedicels (3–)4–6 mm. long, the rhachis not pro-longed into an awn-like bract.
Morphology Reproductive morphology Flowers Calyx
Calyx pubescent; tube 3–3·5 mm. long; lobes triangular or lanceolate, 2–4 mm. long.
Morphology Reproductive morphology Flowers Corolla
Corolla white, pink or purplish; standard often with pink or purple veins, obovate-oblong, 0·8–1·4 cm. long, 6·5–10 mm. wide.
Morphology Reproductive morphology Fruits
Pods linear-oblong, compressed, 4–5 cm. long, 4·5–6·5 mm. wide, glabrous to pubescent or ciliate only along the margins; valves with scarcely evident reticulate venation.
Morphology Reproductive morphology Seeds
Seeds dark brown or purplish-brown, subglobose, somewhat compressed, 2·5–3 mm. in diameter.
Figures
Fig. 155.
Habitat
Upland grassland, moorland, bamboo forest, forest edges, also in swampy places; (1380–)1800–4100 m.
Distribution
K3 K4 K5 T2 T4 T7 U2 U3

[ILDIS]

International Legume Database and Information Service

Conservation
Not Threatened
Ecology
Africa: Afromontane grassland, Afromontane(upland) bushland and thicket., Afromontane (upland) shrubland ('moorland')., Afromontane bamboo thicket.
Morphology General Habit
Perennial, Climbing, Herb

Native to:

Ethiopia, Kenya, Malawi, Rwanda, Sudan, Tanzania, Uganda, Zaïre

Lathyrus hygrophilus Taub. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Volkens, G. [581], Tanzania K000418303
Volkens, G. [867], Tanzania K000418304 Unknown type material

First published in H.G.A.Engler, Pflanzenw. Ost-Afrikas, C: 219 (1895)

Accepted by

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.
  • Pope, G.V., Polhill, R.N. & Martins, E.S. (eds.) (2003). Flora Zambesiaca 3(7): 1-274. Royal Botanic Gardens, Kew.
  • Troupin, G. (ed.) (1983). Flora du Rwanda 2: 1-603. Musee Royal de l'Afrique Centrale.

Literature

Kew Backbone Distributions

  • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.
  • Pope, G.V., Polhill, R.N. & Martins, E.S. (eds.) (2003). Flora Zambesiaca 3(7): 1-274. Royal Botanic Gardens, Kew.
  • Troupin, G. (ed.) (1983). Flora du Rwanda 2: 1-603. Musee Royal de l'Afrique Centrale.

Flora of Tropical East Africa

  • A.J. Jex-Blake, Some Wild Flowers of Kenya p. 46 (1948).
  • Bak. f., Leguminosae of Tropical Africa: 349 (1929).
  • Boutique in Flore du Congo Belge et du Ruanda-Urundi, 6: 78, t. 6 (1954).
  • Cufod., Enumeratio Plantarum Aethiopiae Spermatophyta (Supplement in Bull. Jard. Bot. Brux.) p. 309 (1955).
  • O. Hedberg, Afroalpine Vascular Plants p. 122, 292 (1957).
  • Robyns, Flore des Spermatophytes du Parc National Albert 1: 336, t. 31 (1948), pro parte.
  • Taub. in Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete, Theile C: 219 (1895).

International Legume Database and Information Service

  • Gillett, J. B. et al. (1971). Papilionoideae. In: Fl. Trop. E. Africa, Milne-Redhead & Polhill

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

International Legume Database and Information Service
International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
http://creativecommons.org/licenses/by/3.0

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0