Polymnia

Kalm in C. Linnaeus

Sp. Pl. 2: 926. 1753.

,

Gen. Pl. ed. 5, 396. 1754.

Etymology: Greek Polymnia, muse of sacred music and dance
Treatment appears in FNA Volume 21. Treatment on page 39. Mentioned on page 38.
 TaxonIllustrator 
FNA21 P07 Acanthospermum austral.jpegAcanthospermum australe
Polymnia canadensis
Guizotia abyssinica
Barbara Alongi
Linda Ann Vorobik
Yevonn Wilson-Ramsey

Annuals or perennials, 50–150+ cm (often rhizomatous). Stems erect, branched distally. Leaves all or mostly cauline; opposite; petiolate (petioles often ± winged, often with connate-perfoliate basal appendages); blades (pinnately nerved) deltate or rounded-rhombic to cordate or ovate, often raggedly pinnately lobed (lobes 3–11), ultimate margins coarsely toothed to denticulate or entire, faces pilose or pilosulous to hirtellous, or glabrate, or glabrous, glanddotted and/or stipitate-glandular. Heads usually radiate, rarely ± disciform, (2–5+) in loose to congested, corymbiform clusters. Calyculi 0. Involucres hemispheric, 4–15+ mm diam. 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 (tubes pilosulous, laminae ± cuneate to linear, 3-lobed, sometimes absent or nearly so). Disc-florets 12–30+, functionally staminate; corollas pale-yellow, tubes shorter than abruptly dilated throats, lobes 5, deltate to lanceovate. Cypselae plumply pyriform, ± obcompressed, 3–6-angled or ribbed, finely striate between ribs (narrowed at bases, patently inserted on receptacles, often minutely beaked), sparsely hirtellous or glabrate; pappi 0. x = 15.

Distribution

c, e North America

Discussion

Species 3 (3 in the flora).

Key

1 Annuals; blades of larger leaves shallowly, if at all, pinnately lobed Polymnia cossatotensis
1 Perennials; blades of larger leaves usually deeply pinnately lobed > 2
2 Stems pilosulous to villous and/or stipitate-glandular; cypselae 3-angled or -ribbed Polymnia canadensis
2 Stems glabrous or glabrate; cypselae 4–6-angled or -ribbed Polymnia laevigata
... more about "Polymnia"
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 +
John L. Strother +
Kalm in C. Linnaeus +
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 +
Greek Polymnia, muse of sacred music and dance +
stipitate-glandular +, pilosulous +  and hirtellous or glabrate or glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
hemispheric +
deltate +  and lanceovate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
6 +  and 21 +
Sp. Pl. +  and Gen. Pl. ed. +
1753 +  and 1754 +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
wells1965a +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Polymnia +
Asteraceae (tribe Heliantheae) subtribe Polymniinae +
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 +