Conoclinium

de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 135. 1836.

Etymology: Greek konos, cone, and kline, bed, alluding to conic receptacles
Treatment appears in FNA Volume 21. Treatment on page 478. Mentioned on page 461, 462, 481.
 TaxonIllustrator 
FNA21 P71 Conoclinium coelestin.jpegConoclinium dissectum
Tamaulipa azurea
Ageratum corymbosum
Linny Heagy
Linny Heagy
Linny Heagy

Perennials, 50–200 cm (usually rhizomatous, colonial, rhizomes relatively slender). Stems erect to decumbent (sometimes rooting at proximal nodes), not much branched distal to bases. Leaves cauline; opposite; petiolate; blades usually 3-nerved from bases, deltate, oblanceolate, ovate, ovate-deltate, oblong, or triangular, margins dentate or lobed (to dissected in C. dissectum), faces glabrate to puberulous, villosulous, or hispidulous, glanddotted. Heads discoid, in tight, corymbiform arrays. Involucres hemispheric, 3–6 mm diam. Phyllaries persistent, ca. 25 in 2–3 series, obscurely 2–3-nerved, lanceolate to linear, ± equal (herbaceous). Receptacles conic, epaleate. Florets 35–70+; corollas usually blue to purple or violet, rarely white, throats narrowly funnelform (lengths ca. 4 times diams.); styles: bases not enlarged, glabrous, branches filiform to linear-clavate. Cypselae prismatic (bases narrowed), 5-ribbed, glabrous or sparsely glanddotted and/or hispidulous; pappi persistent, of ca. 30 barbellate bristles in 1 series. x = 10.

Distribution

sw, e North America, Mexico

Discussion

Species 4 (3 in the flora).

Key

1 Leaf blades deeply dissected or lobed (lobes dentate, apices sharply pointed or rounded) Conoclinium dissectum
1 Leaf blades serrate to dentate or crenate (not dissected or lobed) > 2
2 Leaf blades usually oblong to oblong-lanceolate, sometimes triangular, bases truncate to cordate (often subauriculate), apices rounded to obtuse; tips of pappus bristles dilated Conoclinium betonicifolium
2 Leaf blades triangular to deltate or ovate, bases usually cuneate to truncate, rarely subcordate (not subauriculate), apices acute; tips of pappus bristles not dilated Conoclinium coelestinum

"fine" is not a number.

... more about "Conoclinium"
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
indeterminate +  and determinate +
Thomas F. Patterson +  and Guy L. Nesom +
de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
decurrent +
not enlarged +
dissected +, lobed +, toothed +  and entire +
triangular;oblong;triangular;oblong;ovate-deltate;ovate;oblanceolate;deltate +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
filiform;linear-clavate +
white +, usually blue +  and purple or violet +
hispidulous +, sparsely +  and glabrous +
prismatic +
fertile +  and bisexual +
sw +, e North America +  and Mexico +
Greek konos, cone, and kline, bed, alluding to conic receptacles +
glabrate +  and puberulous villosulous or hispidulous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
hemispheric +
lanceolate +  and lance-linear +
lobed +  and dentate +
2-carpellate +
persistent +
subequal +  and unequal +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
bearing subulate enations +, hairy +  and bristly +
patterson1994a +
exalbuminous +
erect +  and decumbent +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Conoclinium +
Asteraceae tribe Eupatorieae +
50 cm500 mm <br />0.5 m <br /> (200 cm2,000 mm <br />2 m <br />) +
vine +, shrub +  and subshrub +