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Flora of Taiwan | Family List | Primulaceae | Lysimachia

Lysimachia decurrens Forst. f., Fl. Ind. Austral. Prodr. 12. 1786; Kao & DeVol, Fl. Taiwan 4: 74. pl. 917. 1978; Chen et al., Fl. Reip. Pop. Sin. 59(1): 120. 1989; Hu & Kelso, Fl. China 15: 73. 1996.


Lysimachia decurrens

Credit: HAST

An annual herb; stolon short; stems erect, angular, 15-80 cm tall, sparsely branched in upper parts, with minutely glandular-hairs. Leaves alternate, petiolate, elliptical, lanceolate to narrowly ovate, 5-10 cm long, 1-3 cm wide, acuminate at apex, attenuate or acuminate at base, entire, green ,palerand with minute dark brown spots beneath. Racemes terminal, to 30 cm long, loosely many-flowered, the bracts acicular, filiform, the pedicels 1-1.5 cm long; flowers white to pinkish, 5-6 mm long; calyx cleft almost to base, the segments lanceolate, acuminate, 3-4 mm long, with glandular dots arranged in line; corolla-lobes suberect, the apex rounded; stamens exserted, filaments inserted on the corolla, with minute glandular hair, 3-3.5 mm long, anthers about 1 mm long; ovary globose, style 3.5-4.5 mm long. Capsules globose, the pistil persistent.

TAIPEI: Nankang, Peng 10442; Shuangkeng, Wang W00826. ILAN: Tali, Yang 2726; Paling, Kuoh 2417. TAOYUAN: Hushing, Yang 2675, Lin 753. HSINCHU: Wufeng, Peng 9384; Chienshih, Kao 2094. MIAOLI: Shihtang, Peng 13930; Kuanwu Wang 8282. NANTOU: Tungpu, Peng 10933; Shenmu, Peng 10877. TAITUNG: Pailu, Kao 9666; Chiapoutai, Huang 595. HUALIEN: Chingshui, Shimizu & Kao 11600; Tienhsian, Chuang & Kao 4410.

Distributed in Japan, Korea, the Ryukyus, Taiwan, southern Asia and Australia. Taiwan, at low to medium altitudes.

Phenology: annual

Life form: herb

Root: rooting at node or not: not rooting at node

Stem: present

Stem: type: erect

Stem: shape: angled

Stem: indumentum: minute glandular hairs

Leaf: position: cauline

Phyllotaxy: alternate

Leaf: petiole: petiolate

Leaf: petiole length (mm): 10-30

Leaf: blade shape: elliptic, lanceolante

Leaf: blade apex: acuminate

Leaf: blade base: attenuate, acuminate

Leaf: blade margin: entire

Leaf: blade surface: dotted

Leaf: blade texture: herbaceous

Leaf: blade length (mm): 50-150

Leaf: blade width (mm): 10-40

Inflorescence: raceme

Inflorescence: position: terminal

Scape: absent

Peduncle: length (mm): 6-15

Bract: present

Bract: length (mm): 3-7

Bract: width (mm): 0

Calyx: shape: 5-parted

Sepal: shape: lanceolate

Sepal: margin: entire

Sepal: length (mm): 2.5-4

Sepal: width (mm): 0.5-1.5

Corolla: color: white, pinkish

Corolla: shape: rotate

Lobe: margin: entire

Lobe: length (mm): 2-2.5

Lobe: width (mm): 1-1.5

Filament fused into a ring or not: filament free

Filament inserted position: base of corolla lobe

Filament: indumentum: minute glandular hairs

Filament and anther relative length: filament obviously longer than anther

Stamens protruding from corolla or not: Stamens protuding from corolla

Capsule: dehiscence type: longitudinal

Distribution: low elevation cultivated field, mid elevation


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