Koanophyllon

Arruda in H. Koster

in H. Koster, Trav. Brazil, 495. 1816.

Common names: Umbrella thoroughwort
Etymology: Etymology unknown possibly an oblique reference to the leaves as a source of dye like indigo
Treatment appears in FNA Volume 21. Treatment on page 542. Mentioned on page 461, 462.
 TaxonIllustrator 
FNA21 P82 Koanophyllon villosum.jpegKoanophyllon villosum
Chromolaena ivifolia
Mikania scandens
Linny Heagy
Linny Heagy
Linny Heagy

Perennials, subshrubs, or shrubs [trees, vines], 40–200+ cm. Stems erect, branched. Leaves cauline; mostly opposite (distal sometimes alternate); petiolate; blades usually 3-nerved from bases, mostly deltate or ovate to triangular-lanceolate or lanceolate (lacking internal translucent lenses or streaks), margins entire or dentate, faces glabrous or sparsely hispidulous, puberulent, or strigose, sometimes sparsely to densely glanddotted. Heads discoid, in corymbiform to paniculiform arrays. Involucres obconic to hemispheric, 2–3 mm diam. Phyllaries persistent (at least outermost), 7–16 in 1–2 [–4] series, 3-nerved, ovate to lanceolate, ± equal or unequal. Receptacles flat or convex, epaleate. Florets 3–13 [–20]; corollas whitish to pinkish [violet], throats funnelform (lengths ca. 2.5 times diams.); styles: bases sometimes enlarged, glabrous, branches filiform to obscurely clavate. Cypselae prismatic, 5-ribbed, sparsely hispidulous or piloso-strigose, sometimes glanddotted; pappi persistent, of 30–35, barbellate bristles in 1 series. x = 10.

Distribution

s, w United States, Mexico, West Indies, Central America, South America

Discussion

Species ca. 115 (3 in the flora).

Selected References

None.

Key

1 Leaf blades ovate to ovate-deltate or ovate-lanceolate, abaxial faces densely gland-dotted Koanophyllon villosum
1 Leaf blades lanceolate to triangular-lanceolate, abaxial faces eglandular or sparsely gland-dotted > 2
2 Leaves usually opposite, sometimes subopposite to alternate on distal 1/3 of stems, blade apices acuminate, adaxial faces glabrous; involucres 4.5–5.5 mm; phyllaries: outermost narrowly lanceolate, glabrous, margins hyaline on proximal 2/3, eciliate Koanophyllon solidaginifolium
2 Leaves opposite, blade apices acute, adaxial faces sparsely strigose to hispidulous; involucres (3–)3.5–4 mm; phyllaries: outermost ovate-elliptic or obovate to narrowly oblong-lanceolate, puberulent, margins herbaceous, usually weakly ciliate Koanophyllon palmeri

"fine" is not a number.

... more about "Koanophyllon"
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
Guy L. Nesom +
Arruda in H. Koster +
decurrent +
enlarged +
dissected +, lobed +, toothed +  and entire +
ovate;triangular-lanceolate or lanceolate +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
filiform;obscurely clavate +
Umbrella thoroughwort +
whitish +  and pinkish +
piloso-strigose +  and hispidulous +
prismatic +
fertile +  and bisexual +
s +, w United States +, Mexico +, West Indies +, Central America +  and South America +
Etymology unknown +  and possibly an oblique reference to the leaves as a source of dye like indigo +
strigose +, puberulent +, hispidulous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
obconic;hemispheric +
lanceolate +  and lance-linear +
dentate +  and entire +
2-carpellate +
persistent +
7 +  and 16 +
in H. Koster, Trav. Brazil, +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Koanophyllon +
Asteraceae tribe Eupatorieae +
shrub +  and subshrub +