좁은잎해바라기(1)

좁은잎해바리기(1)

https://daehyo49.tistory.com/7812496

버들잎해바리기(1)

http://blog.daum.net/daehyo/7812279

 

 

 

학명 : Helianthus angustifolius Linnaeus

분류 : 국화과(Asteraceae

 

영어 명 : Swamp sunflower

 

사진 : 2019.10.19-10.20  양평도로 옆  화원

 

 

 

 

 

 

 

 

 

 

 

 

 

잎에 선점이 밀포한다

 

 

 

줄기에 털이 있다

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

잎 가장자리가 양쪽으로 심하게 말려 뒷면이 거의 보이지 않는다  

 

아래: 2019.10.29 인천드림파크

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

아래는 근생엽

 

아래 : 2021.10.03 방학동

 

 

잎 윗면

 

 

잎 아랫면 

 

 

 

 

 

 

 

 

좁은잎해바라기와 버들잎해바라기의 구분  좁은잎해바라기는 버들잎해바라기외 비슷하나 아래와 같이 구분한다 (FNA 검색표) 1. 줄기는 무모(분백색 glaucous); 엽연은 전연으로 납작     .................   Helianthus salicifolius  버들잎해바라기 1. 줄기는 보통 유모; 엽연은 전연이나 반곡된다     .................... Helianthus angustifolius 좁은잎해바리기

 

 

 

 

 

아래 : 2023.10.21 청라국제도시

 

 

 

 

 

 

 

 

 

 

FNA 설명

 

 

Helianthus angustifolius Linnaeus, Sp. Pl. 2: 906. 1753.

Swamp sunflower

(학명 이명)

Helianthus angustifolius var. planifolius Fernald

(설명)

Perennials, 50–150+ cm (with crown buds, rhizomes absent or poorly developed). Stems erect, usually ± hairy. Leaves mostly cauline; opposite or alternate; sessile or subsessile; blades (3-nerved near bases) narrowly lanceolate to linear, 8–15 × 0.15–0.5(–1) cm, bases cuneate , margins entire (revolute, abaxial face sometimes obscured by rolled margins), abaxial faces strigose to hispid or hirsute, sometimes (adaxial not) gland-dotted. Heads 3–16. Peduncles 5–15 cm. Involucres shallowly hemispheric, 10–20 mm diam. Phyllaries 25–32 (loose), lanceolate, 4–9 × 1–2 mm, apices acute to slightly acuminate, abaxial faces usually scabrous, rarely glabrous, usually gland-dotted. Paleae (oblanceolate) 5.5–6.5 mm, entire or ± 3-toothed (apices purplish, mucronate, gland-dotted). Ray florets 10–20; laminae 10–20 mm (abaxial faces gland-dotted). Disc florets 75+; corollas 4–4.5 mm, lobes yellow; anthers dark brown or black, appendages dark (style branches usually yellow). Cypselae 2–3 mm, glabrate; pappi of 2 aristate scales 1.5–2.1 mm. 2n = 34.

(개화, 생육지와 분포)

Flowering late summer–fall. Open to shaded, usually moist places; 10–700 m; Ala., Ark., Fla., Ga., Ind., Iowa, Ky., La., Md., Miss., Mo., N.J., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.

 

The distal parts of Helianthus angustifolius are identical in appearance to those of H. simulans; plants of the latter are taller (200+ cm) and more robust. The leaves are not only narrower in H. angustifolius but also tend to be more strongly revolute (abaxial faces sometimes scarcely visible).

 

http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242416628