Black-eyed Susan

Rudbeckia hirta var. pulcherrima

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.
Rudbeckia hirta var pulchimera Part of a massive colony of plants in a pasture. Black-eyed Susan,Geotagged,Rudbeckia hirta,Rudbeckia hirta var pulchimera,Rudbeckia hirta var. pulcherrima,Summer,United States,flower,pasture

Naming

Rudbeckia hirta Linnaeus var. pulcherrima Farwell, Rep. (Annual) Michigan Acad. Sci. 6: 209. 1904.
Rudbeckia bicolor Nuttall; R. longipes T. V. Moore
Rudbeckia sericea T. V. Moore
Rudbeckia serotina Nuttall
Rudbeckia serotina var. corymbifera (Fernald) Fernald & B. G. Schubert
Rudbeckia serotina var. lanceolata (Bischoff) Fernald & B. G. Schubert
Rudbeckia serotina var. sericea (T. V. Moore) Fernald & B. G. Schubert
Rudbeckia hirta var. pulcherrima with tubular ray flowers Rudbeckia hirta var. pulcherrima (Black-eyed Susan) with tubular ray flowers an unusual form. In most cases the ray flowers are flat as were all the other Rudbeckia plants growing with this one. Habitat is a grassy ditch along a driveway. Black-eyed Susan,Geotagged,Minnesota,Rudbeckia hirta,Rudbeckia hirta var. pulcherrima,Summer,United States,tubular ray flowers

Distribution

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.

Variety hirta grows mostly from the Appalachian highlands to Illinois.
Rudbeckia hirta var. pulcherrima Detail of leaf shape and attachment to stem. Plants in a pasture. Black-eyed Susan,Geotagged,Rudbeckia hirta,Rudbeckia hirta var. pulcherrima,Summer,United States,pasture

Habitat

Prairies, meadows, roadsides
Rudbeckia hirta var. pulcherrima Detail of stem and leaf attachment. Plants in a pasture. Black-eyed Susan,Geotagged,Rudbeckia hirta,Rudbeckia hirta var. pulcherrima,Summer,United States,pasture

Reproduction

Flowering spring to fall. Spreads by seeds.

References:

Some text fragments are auto parsed from Wikipedia.

http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250068695
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250068696
http://wisflora.herbarium.wisc.edu/taxa/index.php?taxon=6844
https://www.minnesotawildflowers.info/flower/black-eyed-susan
https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=530172#null
https://en.wikipedia.org/wiki/Rudbeckia
Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderAsterales
FamilyAsteraceae
GenusRudbeckia
SpeciesRudbeckia hirta var. pulcherrima
Photographed in
United States of America