Lathyrus latifolius L., Fabaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Lathyrus latifolius var. splendens Groenl. & Rümpler; Lathyrus purpureus Gilib., nom. inval.

Common name(s): [more details]

Chinese: kuan ye shan li dou

English: broad-leaf everlasting-pea, everlasting peavine, everlasting sweet pea, everlasting-pea, perennial peavine, perennial sweet pea, perennial-pea

French: gesse a larges flles

Habit:  herb

Description:  "Scrambling perennial; stems glabrous, somewhat angled, broadly winged. Leaves glabrous; tendril branched in upper leaves, sometimes reduced and simple in lower leaves; leaflets in 1 pair, narrowly to broadly elliptic, acute to acuminate, 30-100-(120) mm long; veins parallel; stipules ovate-lanceolate with 1-(2) basal lobes, usually c. as wide as or wider than stem, but at least 1/2 as wide ((3)-5-15 mm wide), 15-35 mm long. Inflorescence > leaves, (4)-8-14-flowered; pedicels 5-12 mm long. Calyx glabrous, slightly or not gibbous at base; calyx teeth somewhat unequal, triangular; lower teeth = or > tube; upper teeth shorter. Corolla usually magenta or purple-pink, rarely white, (15)-20-30 mm long. Pod glabrous, light brown, 10-15-seeded, 60-110 mm long; seeds reddish brown, reticulate-rugose; hilum 1/5-1/3 of circumference"  (Webb et al., 1988; p. 652).

Description from Flora of China online.
Description from Flora of Australia online.

Habitat/ecology:  In New Zealand, "waste places, banks, coastal sands and gravels.  The everlasting pea is a persistent perennial forming extensive patches with thick fleshy roots.  Shoots produced late in the flowering season may have narrow, ± linear leaves, and racemes with as few as 2 flowers"  (Webb et al., 1988; p. 652).  See also Lathyrus tingitanus.

Propagation:  Seed

Native range:  Europe and northern Africa; cultivated and naturalized elsewhere in temperate regions (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia (Pacific offshore islands) Lord Howe Island	Lord Howe Island	introduced invasive	Orchard, Anthony E., ed. (1994) "widely cultivated and often naturalised as a garden escape". Vouchers cited: P.S. Green 1624 (A, K), L.A.S. Johnson & A.N. Rodd 1288 (K, NSW)
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive	Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive cultivated	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (pp. 487, 533, 554) Voucher cited: Danton I(5/293)1638. "Está presente en varios jardines del pueblo de San Juan Bautista.  Se puede naturalizar y entonces se debe vigilar su extensión".
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive cultivated	Pratt, Linda W./Bio, Leali‘i F. (2012) (p. 76) Voucher cited: L.W. Pratt 3749 (BISH)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 678) East Maui. Voucher cited: Hobdy 2412 (BISH). "Naturalized at least at 1,130 m, Olinda area".
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Starr, Forest/Martz, Kim/Loope, Lloyd L. (2002) (p. 20) East Maui. Voucher cited: Starr & Martz 980129-1

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	New South Wales	introduced invasive cultivated	National Herbarium of New South Wales (2011) "Cultivated as an ornamental, occasionally naturalized".
Australia Australia (continental)	Queensland	introduced invasive cultivated	National Herbarium of New South Wales (2011) "Cultivated as an ornamental, occasionally naturalized".
Canada Province of British Columbia	Canada (British Columbia)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)
Canada Canada	Canada (country)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)
China China	China (People's Republic of)	introduced cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011) Cultivated in Shaanxi
Japan Japan	Japan (country)	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 184)
Mexico Mexico	Mexico (United Mexican States)	introduced	ILDIS Co-ordinating Centre (2011)
New Zealand New Zealand	New Zealand (country)	introduced invasive	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 652)
United States (west coast) United States (west coast states)	USA (Oregon)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)
United States (west coast) United States (west coast states)	USA (California)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)
United States (west coast) United States (west coast states)	USA (Washington)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)

Also reported from
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
United States (continental except west coast) United States (other states)	United States (other states)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)

Additional information:
Weed identification guide from Virginia Tech.

Additional online information about Lathyrus latifolius is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Lathyrus latifolius as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Lathyrus latifolius may be available from the Germplasm Resources Information Network (GRIN).

References:

Atkinson, Rachel/Sawyer, John. 2011. Naturalized species in the Juan Fernández Archipelago, Chile. Unpublished spreadsheet.

Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido. 2006. Nouveau catalogue de la flore vaculaire de l'archipel Juan Fernández (Chile) [Nuevo catálogo de la flora vacular del Archipélago Juan Fernández (Chile)]. Acta Bot. Gallica 153(4):399-587.

ILDIS Co-ordinating Centre. 2011. International Legume Database & Information Service. Online searchable database.

Missouri Botanical Garden. 2011. TROPICOS. Online searchable database.

Mito, Toshikazu/Uesugi, Tetsuro. 2004. Invasive alien species in Japan: the status quo and the new regulation for prevention of their adverse effects. Global Environmental Research 8(2)/2004: 171-191.

National Herbarium of New South Wales. 2011. PlantNet: New South Wales Flora online. The Plant Information Network System of the Botanic Gardens Trust Version 2.0. Online resource.

Orchard, Anthony E., ed. 1994. Flora of Australia. Vol. 49, Oceanic islands 1. Australian Government Publishing Service, Canberra.

Pratt, Linda W./Bio, Leali‘i F. 2012. New plant records from Hawai‘i Island. In: Evenhuis, Neal L. and Eldredge, Lucius G., eds. Records of the Hawaii Biological Survey for 2011. Part II: Plants. Bishop Museum Occasional Papers. 113:75-80.

Starr, Forest/Martz, Kim/Loope, Lloyd L. 2002. New plant records from the Hawaiian archipelago. In: Evenhuis, Neal L. and Eldredge, Lucius G., eds. Records of the Hawaii Biological Survey for 2000. Part 2: Notes. Bishop Museum Occasional Papers. 69:16-27.

U. S. Government. 2011. Integrated Taxonomic Information System (ITIS) (on-line resource).

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

U.S. Dept. Agr., Nat. Res. Cons. Serv. 2011. The PLANTS Database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. 1999. Manual of the flowering plants of Hawaii. Revised edition. Bernice P. Bishop Museum special publication. University of Hawai‘i Press/Bishop Museum Press, Honolulu. 1919 pp. (two volumes).

Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. 1988. Flora of New Zealand, Volume IV: Naturalised pteridophytes, gymnosperms, dicotyledons. Botany Division, DSIR, Christchurch. 1365 pp.

Zhengyi, Wu/Raven, Peter H./Deyuan, Hong. 2011. Flora of China (online resource).