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Genus Lysimachia Family Primulaceae

Synonyms: Anagallis APNI*

Description: Perennial herbs usually without rosettes (young plants may have rosette form); stems erect to prostrate, pubescent towards the apex with multicellular glandular hairs or glabrous, often stoloniferous.

Leaves opposite, alternate or occasionally in whorls.

Flowers in racemes, panicles or corymbs or solitary and axillary. Sepals free. Corolla yellow, white, pinkish, red, orange or blue. Staminodes lacking. Ovary superior.

Capsule dehiscent from the apex (splitting longitudinally), usually by 5 valves or occasionally splitting irregularly, or circumsciss (splitting transversely).

Distribution and occurrence: World: 150–250 species, cosmopolitan, especially Northern Hemisphere. Australia: 8 species, N.S.W., Qld, Vic., Tas., N.T., S.A., W.A.

Formerly placed in Myrsinaceae. Reference: P.G. Kodela, Lysimachia (Myrsinaceae) in New South Wales, Telopea 11(2): 147–154 (2006).

Text by based on G.J. Harden, Fl. NSW Vol. 1 (1990); updated by P.G. Kodela, May 2014, March 2017
Taxon concept: Australian Plant Census (accessed March 2017)

Taxa not yet included in identification key
Lysimachia vulgaris

 Key to the species 
1Capsule circumsciss; flowers red, pink, orange or blue; stems quadrangular with prominent longitudinal keels, glabrous; leaves sessile, 2–25 mm long2
Capsule dehiscing from the apex into more or less triangular valves, or rarely splitting irregularly; flowers yellow; stems terete to angular, lacking prominent longitudinal keels, pubescent towards the apex; leaves petiolate or sessile, 0.8–90 mm long3
2Leaves opposite; petals red, pink, orange or blue; petals longer than sepalsLysimachia arvensis
Leaves alternate; petals white to pink; petals shorter than sepals
                       Back to 1
Lysimachia minima
3Flowers white to pinkish4
Flowers yellow
                       Back to 1
4Leaves not fleshy; pedicels 1–5 mm long; petals white to pinkishLysimachia fortunei
Leaves slightly fleshy; pedicels usually 5–15 mm long; petals white
                       Back to 3
Lysimachia mauritiana
5Stems erect; leaves elliptic to narrowly elliptic, lanceolate or oblanceolate, mostly 4–9 cm long; flowers in panicles or racemesLysimachia vulgaris var. davurica
Stems ± prostrate; leaves ovate to broadly ovate or ± spatulate or orbiculate, to 3.5 cm long; flowers simple
                       Back to 3
6Stems and leaves with hyaline, septate hairs; corolla close to or barely exceeding length of the calyx; sepals and peduncles with hairsLysimachia japonica
Stems and leaves glabrous; corolla distinctly exceeding the calyx; sepals and peduncles glabrous
                       Back to 5
Lysimachia nummularia

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