Asteraceae (tribe Heliantheae) subtribe Polymniinae

H. Robinson

Phytologia 41: 43. 1978.

Treatment appears in FNA Volume 21. Treatment on page 38. Mentioned on page 7.

Annuals or perennials, mostly 50–150+ cm (often rhizomatous). Leaves all or mostly cauline; opposite; petiolate; blades (pinnately nerved) deltate or rounded-rhombic to cordate or ovate, often raggedly pinnately lobed, ultimate margins coarsely toothed to denticulate or entire, faces pilose or pilosulous to hirtellous, or glabrate, or glabrous, usually glanddotted and/or stipitate-glandular. Heads usually radiate (rarely, laminae reduced, heads technically ± disciform), (2–5+) in loose to congested, corymbiform arrays. Calyculi 0. Involucres hemispheric. Phyllaries persistent, 6–21+ in 2 series (distinct, outer 2–6 ovate to linear, ± herbaceous, inner ovate to lanceolate, subequal to or shorter than outer, more scarious, similar to paleae). Receptacles flat to convex, paleate (paleae obovate to oblanceolate or spatulate, herbaceous to scarious). Ray-florets 2–6, pistillate, fertile; corollas pale yellowish to whitish. Disc-florets 12–30+, functionally staminate; corollas pale-yellow, tubes shorter than abruptly dilated throats, lobes 5, deltate to lanceovate; anther thecae pale; stigmatic papillae 0. Cypselae plumply pyriform, ± obcompressed, 3–6-angled or ribbed, finely striate between ribs, sparsely hirtellous or glabrate; pappi 0.

Distribution

c, e North America

Discussion

Genus 1, species 3 (3 species in the flora).

Traditionally, Polymnia has been included in Melampodiinae. It was treated at tribal rank, as Polymnieae (H. Robinson) Panero, by J. L. Panero and V. A. Funk (2002).

Selected References

None.

Lower Taxa

not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +, loose +  and congested +
indeterminate +  and determinate +
Theodore M. Barkley† +, Luc Brouillet +  and John L. Strother +
H. Robinson +
decurrent +
compound +  and simple +
lobed;rounded-rhombic;cordate or ovate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
pale-yellow +, pale yellowish +  and whitish +
glabrate +  and hirtellous +
ribbed +, 3-6-angled +, obcompressed +  and pyriform +
fertile +  and bisexual +
c +  and e North America +
stipitate-glandular +, pilosulous +  and hirtellous or glabrate or glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
hemispheric +
deltate +  and lanceovate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
6 +  and 21 +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
prostrate +  and ascending +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Asteraceae (tribe Heliantheae) subtribe Polymniinae +
Asteraceae tribe Heliantheae +
subtribe +
coarsely toothed +  and denticulate or entire +
perennial +  and annual +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
tree +, shrub +  and subshrub +