Herbs 10-15 cm tall, perennial, rosulate, glabrous. Taproot with lateral shoot-bearing roots, producing secondary leaf rosettes. Stems several, flagelliform, long creeping above ground; nodes 1-7 cm apart, most with adventitious roots and a single leaf. Flowering stems from rosettes and leaf axils of creeping stems, erect, to 15 cm, leafless. Leaves present at anthesis; petiole 1-4 cm; leaf blade orbicular, broadly elliptic, ovate, or obovate, 1-3 × 0.8-1.5 cm, undivided or weakly pinnatifid, base rounded, cuneate, or truncate, margin entire, apex obtuse, rounded, or emarginate and often mucronulate; lateral lobes (if present) 1(or 2) pair(s), on basal half of leaf blade, triangular, small. Synflorescence laxly and weakly corymbiform, with 1-6 capitula. Capitula with 15-25 florets; peduncle capillaceous, to 10 cm. Involucre narrowly cylindric, 7-8 × 3-4 mm at anthesis, to 10 mm in fruit. Phyllaries abaxially glabrous; outer phyllaries ovate to lanceolate, longest to 2(-3) mm, apex acute; inner phyllaries 8, apex acute to obtuse. Florets yellow. Anther tube and style greenish to blackish upon drying. Achene brown, fusiform, 4-6 mm, apex attenuate into a filiform 1.5-3 mm beak. Pappus 4-5 mm. Fl. and fr. May-Oct. 2n = 16*.
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Delicate, creeping, glabrous perennial; lvs petiolate, with broadly elliptic to orbicular, entire or obscurely toothed blade 0.5–3 cm; heads solitary or paired on peduncles ca 1 dm or less; invol 7–12 mm; fls yellow; achenes reddish-brown, moderately compressed, 4–6 mm, the slender beak about equal to the body; 2n=24. A weed in lawns; native of Japan, occasionally intr. in e. U.S., as in Del., Pa., and N.Y. June–Aug. (Lactuca s.)
A herb. It keeps growing from year to year. It grows 10-15 cm tall. It has a taproot and the leaves are in a ring. It has side, shoot bearing roots. There are several creeping stems with nodes 1-7 cm apart and roots form at these as well as one leaf. The leaves are oval and 1-3 cm long by 1-2 cm wide. The flowering stems arise from the ring of leaves.
Plants stoloniferous. Aerial stems ± scapiform. Leaf blades 5–30+ × 5–30+ mm, margins often with 1(–2), ± retrorse teeth near bases. Peduncles (1–)5–15+ cm. Involucres 8–10 mm. Cypselae 6 mm; pappi 4–7 mm. 2n = 16, 24.
It is a temperate plant. It grows in moist areas on gravelly mountain slopes between 1,500-2,000 m above sea level.
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Cultivated fields, waste ground and mountain slopes all over Japan.
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