학명: Rudbeckia hirta L.
분류: Asteraceae
국명 이명: 수잔루드베키아
사진: 2016.07.30 백두산 근처
아래 : 2020.03.03 굴봉산역
수과는 1.5–2.7 mm이고 관모는 없다
인편은 4-6mm
Rudbeckia hirta Linnaeus, Sp. Pl. 2: 907. 1753.
Black-eyed Susan
Annuals, biennials, or perennials, to 100 cm (taprooted or roots fibrous). Stems hispid to hirsute (hairs spreading, 1+ mm). Leaves: blades elliptic, lanceolate, or ovate (not lobed), bases attenuate to cuneate, margins entire or serrate, apices acute, faces hispid to hirsute; basal petiolate, blades 8–30 × 0.5–7 cm; cauline petiolate or sessile, blades (sometimes pandurate) 3–20 × 0.4–4 cm. Heads borne singly or (2–5) in loose, corymbiform arrays. Phyllaries to 3 cm (faces hispid to hirsute). Receptacles hemispheric to ovoid; paleae 4–6 mm, apices acute, often attenuate, abaxial tips hirsute to hispid. Ray florets 8–16; laminae (usually uniformly yellow to yellow-orange or with a basal maroon splotch, sometimes mostly maroon) elliptic to oblong or oblanceolate, 15–45 × 5–10 mm, abaxially hispid to hirsute. Discs 12–22 × 10–20 mm. Disc florets 250–500+; corollas proximally yellowish green, distally brown-purple, 3–4.2 mm; style branches ca. 1.5 mm, apices subulate. Cypselae 1.5–2.7 mm; pappi 0.
Varieties 4 (4 in the flora): e North America.
Some strains of Rudbeckia hirta are cultivated and/or used in seed mixes for "re-naturalization" and erosion control.
FNA 종하 검색표
1. Annuals, biennials, or perennials;
stems branched at bases or proximal to or at or near mid heights,
leafy mostly toward bases (leaves smaller distally);
peduncles usually at least 1/2 plant heights (Gulf Coastal Plain, Florida to Texas)
2. Stems branched mostly at or near mid heights;
basal leaves oblanceolate,
faces hispid to ± sericeous; Georgia to Texas
.......................... Rudbeckia hirta var. angustifolia
2. Stems branched at or near bases (plants often scapiform);
basal leaves obovate to nearly orbiculate,
faces scabrous to hirsute; c, s Florida
.............................. Rudbeckia hirta var. floridana
1. Biennials or perennials;
stems branched mostly beyond mid heights,
leafy ± throughout;
peduncles to 1/3 plant heights
3. Leaves: basal blades broadly ovate to broadly elliptic,
2.5–7 cm wide (lengths mostly 2 times widths),
margins coarsely toothed;
cauline (sometimes sessile) lanceolate, ovate, or pandurate
(mostly Appalachian Highlands toIllinois)
......................... Rudbeckia hirta var. hirta 루드베키아
3. Leaves: basal blades lanceolate to oblanceolate,
1–2.5(–5) cm wide (lengths 3–5 times widths),
margins entire or serrulate;
cauline blades spatulate, oblanceolate, or broadly linear
. ................................ Rudbeckia hirta var. pulcherrima (= R. bicolor) 원추천인국
출처: http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200024393
1. Rudbeckia hirta Linnaeus var. hirta
(학명 이명)
Rudbeckia amplectens T. V. Moore; R. brittonii Small; R. hirta var. brittonii (Small) Fernald; R. hirta var. monticola (Small) Fernald; R. monticola Small
(설명)
Biennials or perennials. Stems branched mostly beyond mid heights, leafy ± throughout. Leaves: basal blades broadly ovate to broadly elliptic, 2.5–7 cm wide (lengths mostly 2 times widths); cauline blades lanceolate, ovate, or pandurate; margins coarsely toothed; faces hirsute to hispid. Peduncles less than 1/3 plant heights. 2n = 38.
Flowering spring–fall. Open woodlands, fields, roadsides; 30–300 m; Ala., Ark., Conn., Del., Ga., Ill., Ind., Ky., Maine, Md., Mass., Mich., Miss., N.H., N.J., N.Y., N.C., Ohio, Pa., S.C., Tenn., Vt., Va., W.Va.
(생육지)
Variety hirta grows mostly from the Appalachian highlands to Illinois. A report of var. hirta from ontario has not been confirmed.
2. Rudbeckia hirta Linnaeus var. pulcherrima Farwell, Rep. (Annual) Michigan Acad. Sci. 6: 209. 1904.
(학명 이명)
Rudbeckia bicolor Nuttall; R. longipes T. V. Moore; R. sericea T. V. Moore; R. serotina Nuttall; R. serotina var. corymbifera (Fernald) Fernald & B. G. Schubert; R. serotina var. lanceolata (Bischoff) Fernald & B. G. Schubert; R. serotina var. sericea (T. V. Moore) Fernald & B. G. Schubert
(설명)
Annuals or perennials. Stems branched mostly beyond mid heights, leafy ± throughout. Leaves: basal blades lanceolate to oblanceolate 1–2.5(–5) cm wide (lengths 3–5 times widths); cauline blades spatulate, oblanceolate, or broadly linear; margins entire or serrulate; faces scabrous to hirsute. Peduncles to 1/3 plant heights. 2n = 38.
Flowering spring–fall.
(생육지)
Prairies, meadows, roadsides; 10–500 m; Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.S., ont., P.E.I., Que., Sask.; Ala., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo.
국표식 등재종
Rudbeckia laciniata subsp. ampla (A.Nelson) Cronquist 암플라삼잎국화
Rudbeckia laciniata var. hortensis Bailey 겹삼잎국화
Rudbeckia hirta L. 루드베키아
Rudbeckia hirta L. 수잔루드베키아
Rudbeckia deamii S.F.Blake 데아미루드베키아
Rudbeckia fulgida Ait. 풀기다루드베키아
Rudbeckia fulgida var. speciosa (Wender.) Perdue 스페키오사루드베키아
Rudbeckia fulgida var. sullivantii (C.L.Boynton & Beadle) Cronquist
설리번트루드베키아
Rudbeckia fulgida var. sullivantii 'Goldsturm' 설리번트루드베키아 '골드스텀'
Rudbeckia maxima Nutt. 큰루드베키아
Rudbeckia subtomentosa Pursh 잔털루드베키아
Rudbeckia triloba L. 애기루드베키아
Rudbeckia laciniata L. 삼잎국화
Rudbeckia bicolor Nutt. 원추천인국 - (FNA) R. hirta var. pulcherrima
Rudbeckia laciniata var. hortensis Bailey 겹삼잎국화
참고로 원추천인국 Rudbeckia bicolor Nutt.의 퍼온 사진을 올린다
이상의 자료 출처: https://gobotany.newenglandwild.org/species/rudbeckia/bicolor/
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