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Packera obovata
Packera obovata
(Muhl. ex Willd.) W.A. Weber & A. Löve
Family:
Asteraceae
[
Senecio obovatus
Arv.-Touv.,
more
Senecio obovatus var. elliottii
(Torr. & A.Gray) Fernald,
Senecio obovatus var. rotundus
Britton,
Senecio rotundus
Small
]
Flora of North America
Resources
Debra K. Trock in Flora of North America (vol. 20)
Perennials,
20-50+ cm; stoloniferous and rhizomatous (rhizomes horizontal to suberect).
Stems
1 or multiple, loosely clustered, usually glabrous, sometimes tomentose proximally and in leaf axils.
Basal leaves
(and proximal cauline) petiolate; blades orbiculate, ovate, or obovate, 40-100+ × 20-80+ mm, bases tapering, rounded, or abruptly contracted, margins crenate, dentate, or serrate.
Cauline leaves
gradually reduced (sessile, clasping; pinnatisect or sublyrate).
Heads
6-15+ in open or congested, corymbiform arrays.
Peduncles
bracteate, glabrous or proximally tomentose.
Calyculi
conspicuous.
Phyllaries
13 or 21, green (tips sometimes reddish), 3-6 mm, glabrous or floccose-tomentose proximally.
Ray florets
8-13(-21); corolla laminae 7-10 mm.
Disc florets
40-50+; corolla tubes 2-3 mm, limbs 2-3 mm.
Cypselae
1-1.5 mm, glabrous or hirsute on ribs;
pappi
3-6 mm.
2
n
= 44, 88, 90. Flowering late Feb-Apr (south), early Apr-early Jun (north). Meadows in deciduous woodlands, wet ditches, stream banks, rocky hillsides; 0-2500 m; Ont., Que.; Ala., Ark., Conn., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mass., Mich., Miss., Mo., N.H., N.J., N.Mex., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va.; Mexico (Coahuila).
Packera obovata
forms relatively large, stoloniferous colonies in wet sites.
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