둥근잎택사

 

학명:  Caldesia parnassifolia (Bassi ex L.) Parl.

분류: 택사과(Alismataceae)

학명 풀이:

parnassiflolia: 물매화속의 잎 모양을 한

 

사진: 2017.07.10 제주도 거문오름

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

아래: 2020.08.21 제주도

 

 

Fruitlets obovoid, ca. 3 × 2 mm, with 3-5 longitudinal ribs abaxially and an erect beak

(출처: FOC) (모눈크기 2mm)

 

 

둥근잎택사와 택사 열매 비교

좌: 등근잎택사   우: 택사

왼쪽 둥근잎택사   오른쪽 택사

둥근잎택사는 아래에서 보듯이 5-10개의 심피가 나선상으로 배열되고

택사는여러  개의 심피가 환상(環狀)으로 배열된다

 

아래: 2020.08.22 제주도 흐린내생태공원

 

 

 

 

 

둥근잎택사와 어리연꽃  엽맥 비교

 

상: 둥근잎택사(평행맥)  하: 어리연꽃(망상맥)

 

 

근연속과의 분류

 

 

1. Flowers unisexual or polygamous.

    .............................................. Sagittaria 벗풀속

1. Flowers bisexual

    2. Stamens 6; carpels arranged in a single whorl.

        ......................................... Alisma 택사속

    2. Stamens (6-)9 to numerous; carpels spirally arranged

        ....................................... Caldesia 둥근잎택사속

 

 

 

 

Caldesia Parlatore, Fl. Ital. 3: 598. 1860.

泽薹草属 ze tai cao shu

 

 

Herbs, aquatic, perennial, rhizomatous. Leaves all basal, aerial, floating, or submerged, ovate to elliptic; floating leaves deep green, large; aerial leaves subleathery, with erect petiole; submerged leaves usually smaller. Inflorescences paniculate or racemose, much branched; branches whorled, each whorl with 3-6 branches; bracts lanceolate. Flowers pedicellate, verticillate, bisexual. Petals usually larger than sepals. Stamens 6-12. Carpels few to numerous in a single whorl, free, each with 1 ovule. Fruitlets drupaceous, with woody endocarp and spongy exocarp, swollen or slightly compressed, with a short beak.

About three species: Africa, Asia, Australia, Europe; two species in China.

 

1. Leaves longer than broad, apex obtuse, not ribbed, base deeply cordate; stamens 6.

............................................. C. parnassifolia 둥근잎택사

1. Leaves shorter than broad, apex notched, ribbed, base not cordate; stamens 9-12.

................................................ C. grandis

 

 

http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=105055

 

 

Caldesia parnassifolia (Bassi ex Linnaeus) Parlatore, Fl. Ital. 3: 599. 1860.

泽薹草 ze tai cao

(학명 이명)

Alisma parnassifolium Bassi ex Linnaeus, Syst. Nat., ed. 12, 3: 230. 1768; A. parnassifolium var. majus Micheli; A. reniforme D. Don; Caldesia parnassifolia var. major (Micheli) Buchenau; C. reniformis (D. Don) Makino; Echinodorus parnassifolius (Bassi ex Linnaeus) Engelmann.

(설명)

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*.

Lakes, ponds, marshes. Heilongjiang, Hunan, Jiangsu, Nei Mongol, Shanxi, Yunnan, Zhejiang [India, Japan, Korea, Nepal, Pakistan, Russia, Thailand, Vietnam; Africa, Australia, Europe].

 

http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=220002133

 

 

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아래 FOC 열매 세밀화 퍼온 사진

 

 

 

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택사 열매 보충 사진

 

(2020.08.21 제주도 사진)