미국질경이(2)(추정)

 

미국질경이(1)(미국질경이/털질경이/개질경이 구별)

https://daehyo49.tistory.com/7810918

미국질경이(2)(추정)

https://daehyo49.tistory.com/7815058

 

 

 

학명 : Plantago virginica L.

분류 : 질경이과(Plantaginaceae)

 

 

 

사진 : 2023.03.04 광릉수목원

 

 

 

 

우선 잎에 털이 많고 엽신이 도피침형 또는 주걱형으로 보이고 꽃잎이 황색이라 미국질경이로 추정한다

 

 

 

 

 

 

아래 : 2023.04.04 광릉수목원

 

 

 

 

 

 

 

 

 

 

 

 

<국가생물종지식정보시스템> 설명

 

잎

잎은 모여 나며, 주걱형 또는 도란형으로, 둔두, 기부 엽병쪽으로 흘러내리고, 톱니가 없거나 낮은 거치이다.

열매

열매는 삭과로 장타원형이고, 꽃받침과 거의 같은 길이이다. 종자 2개이고 횡열개이다.

꽃

꽃은 5~7월 황백색으로 수상꽃차례를 이룬다. 꽃자루는 가늘고, 홈이 파여 있다. 꽃대 길이는 10~30cm. 화서 길이는 3~15cm, 나비 5~6mm이다. 화관은 막질이고, 하반부는 통형이며, 열편은 4개로 곧게 뻗으며, 퍼지지 않는다.

줄기

전체에 흰털이 빽빽하게 난다.

원산지

북아메리카

분포

북아메리카, 남아메리카, 일본

생육 환경

길가

 

 

FOC 설명

 

Plantago virginica Linnaeus, Sp. Pl. 1: 113. 1753.

 

北美车前 bei mei che qian

 

Herbs, annual or winter annuals. Taproot tenuous. Leaves basal; petiole 0.5-5 cm, winged or not winged; leaf blade oblanceolate, spatulate, or obovate-lanceolate, (2-)3-18 × 0.5-4 cm, sparsely white pubescent, veins (3 or)5, base narrowly cuneate to decurrent onto petiole, margin repand, irregularly dentate, or subentire, apex acute to obtuse. Spikes narrowly cylindric, (1-)3-18 cm, base usually interrupted; peduncle 4-20 cm, hollow, densely white pubescent. Sepals as long as or slightly shorter than bract, pubescent; lower sepals obovate, keel not extending to apex; upper sepals broadly ovate, keel narrower and projected at apex. Corolla yellowish, glabrous; lobes ovate-lanceolate, 1.5-2.5 mm, erect to reflexed, apex acuminate. Stamens adnate to near apex of corolla tube, included or exserted; anthers yellowish, narrowly ovoid to broadly ellipsoid, 0.3-1.1 mm. Pyxis ovoid, 2-3 mm, circumscissile near base, with 2 seeds. Seeds light brown, ovoid to narrowly ovoid, (1-)1.4-1.8 mm, with a shallow groove on ventral face; cotyledons parallel to ventral side. Fl. Apr-May, fr. May-Jun. 2n = 12, 24.

Naturalized in grasslands, roadsides, and lake banks; near sea level to 800 m. Anhui, Chongqing, Fujian, Guangxi, Hubei, Hunan, Jiangsu, Jiangxi, Taiwan, Zhejiang [native to North America; naturalized in Central America, Europe, and Japan].

Plantago virginica was first collected in China in Nanchang Shi, Jiangxi, in 1951. In China this species usually has cleistogamous cosexual flowers. Cleistogamous female flowers and chasmogamous male flowers are rare. Cleistogamous cosexual flowers have erect corolla lobes, included anthers and stigma, and narrowly ovoid ca. 0.3 mm anthers. Cleistogamous female flowers are similar to cosexual flowers but with vestigial anthers and an exserted stigma. Chasmogamous male flowers have patent to reflexed corolla lobes, exserted stamens, broadly ellipsoid 1-1.1 mm anthers, and often a vestigial (흔적만 있는)ovary.

In North America Plantago virginica is typically cleistogamous and cosexual; however, flowers, inflorescences, or entire plants are frequently chasmogamous and functionally male or cleistogamous with exserted stigmas and functionally female