Vernonia baldwinii

Torrey

Ann. Lyceum Nat. Hist. New York 2: 211. 1827

IllustratedEndemic
Synonyms: Vernonia baldwinii subsp. interior (Small) W. Z. Faust Vernonia baldwinii var. interior (Small) B. G. Schubert Vernonia interior
Treatment appears in FNA Volume 19. Treatment on page 213. Mentioned on page 200, 207, 208.

Plants 6–10(–15) dm. Stems puberulent to ± tomentose. Leaves mostly cauline; blades elliptic to lance-ovate or lanceolate, 8–15(–18+) cm × 20–45(–75+) mm, l/w = 2–5, abaxially usually puberulent to tomentose or pannose (hairs ± erect, ± curled), seldom glabrate, resin-gland-dotted, adaxially scabrellous, glabrescent, not resin-gland-dotted. Heads in corymbiform-scorpioid arrays. Peduncles 1–25 mm. Involucres broadly campanulate to hemispheric, 4–6(–8+) × 4–7+ mm. Phyllaries 45–65+ in 5–6 series, usually puberulent (often resin-gland-dotted distally), sometimes glabrescent, margins ciliolate, the outer lance-ovate, 1–2 mm, inner oblong to lanceolate, 5–8+ mm, tips rounded-apiculate to acute (sometimes recurved). Florets (15–)20–25(–35+). Cypselae 2.5–3 mm; pappi fuscous to purplish, outer scales 25–30, 0.2–1 mm, contrasting with 35–40+, 5–7+ mm inner bristles. 2n = 34.


Phenology: Flowering Jun–Nov.
Habitat: Disturbed places, grasslands, flood plains, forest margins, prairies
Elevation: 10–1100 m

Distribution

V19-267-distribution-map.gif

Ark., Colo., Ill., Iowa, Kans., Ky., La., Mich., Mo., Nebr., Okla., Tex.

Discussion

Regarding Vernona baldwinii and V. interior, L. H. Shinners (1950) wrote, “The tips of the phyllaries vary from loosely appressed to squarrose, and from puberulent to almost completely glabrous on the inner face. The geographic distribution of the two extremes is nearly identical. I consider the two to be merely forms of one species.” I concur.

Selected References

None.

Lower Taxa

None.

... more about "Vernonia baldwinii"
John L. Strother +
Torrey +
Ark. +, Colo. +, Ill. +, Iowa +, Kans. +, Ky. +, La. +, Mich. +, Mo. +, Nebr. +, Okla. +  and Tex. +
10–1100 m +
Disturbed places, grasslands, flood plains, forest margins, prairies +
Flowering Jun–Nov. +
Ann. Lyceum Nat. Hist. New York +
Illustrated +  and Endemic +
Vernonia baldwinii subsp. interior +, Vernonia baldwinii var. interior +  and Vernonia interior +
Vernonia baldwinii +
Vernonia +
species +