둥근잎택사-[정명] Caldesia parnassifolia (Bassi ex L.) Parl.

과명	Alismataceae (택사과)	속명	Caldesia (둥근잎택사속)
전체학명	[정명] Caldesia parnassifolia (Bassi ex L.) Parl.

영명

Parnassus-leaf caldesia (추천명)

Rhizomes creeping. Petiole 5-100 cm; leaf blade ovate or elliptic, 2-10 × 1.5-7 cm, veins 9-15, base cordate to deeply so, apex obtuse. Scapes erect or not, 30-125 cm high; inflorescences paniculate, 20-35 cm. Flowers 3-verticillate; pedicels 2.5-4 cm. Sepals persistent, ovate, 3.5-5 × 2-3 mm. Petals ovate, larger than sepals. Stamens 6. Carpels 5-10, laterally compressed; style 2(-4) mm, slender. Fruitlets obovoid, ca. 3 × 2 mm, with 3-5 longitudinal ribs abaxially and an erect beak. Fl. and fr. May-Oct. 2n = 22*.

Herbs to 80 cm tall. Leaves deep green, floating or emergent; blades broadly elliptic to suborbicular, 2.5–12 by 4–17 cm, without pellucid markings, the veins 13–17, the apex round, the base cordate; petioles 22.5–50 cm, prominently septate. Inflorescences emergent, paniculate; peduncles mostly longer than petioles, to 75 cm long. Flowers ca 1.5 cm wide; sepals erect, 3.5–4.5 by 2–2.5 mm; petals ca 5 by 3.5–4 mm; stamens 6; filaments white to pale yellow, 2–2.5 mm; anthers bright yellow, ca 1 by 0.5 mm; carpels 5–15, obovate. . Achenes with 3–5 longitudinal smooth ribs on each face. Seeds pale brown, ca 2 by 1 mm.

Caldesia parnassifolia (L.) Parl. (worldfloraonline.org)