Pleurocoronis

R. M. King & H. Robinson

Phytologia 12: 468, fig. pp. 472, 473. 1966.

Etymology: Greek pleura, side, and korone, crown, alluding to squamellae that appear to form a crown subtending bristles
Treatment appears in FNA Volume 21. Treatment on page 510. Mentioned on page 460.
 TaxonIllustrator 
FNA21 P77 Asanthus squamulosus.jpegAsanthus squamulosus
Malperia tenuis
Pleurocoronis pluriseta
Linny Heagy
Linny Heagy
Linny Heagy

Subshrubs or shrubs, (10–) 30–100 cm. Stems erect, usually much branched. Leaves cauline; mostly opposite (distal often alternate); petiolate; blades 1-nerved or 3-nerved, ovate, deltate, or rhombic to lanceolate, margins entire or toothed [lobed, 2-pinnatifid], faces usually stipitate-glandular. Heads discoid, borne singly or in loose, corymbiform arrays. Involucres ± obconic, 4–6 mm diam. Phyllaries persistent, 30–35 in 3–4+ series, (herbaceous to chartaceous) 1-nerved or 3-nerved, ovate to lanceolate, unequal. Florets 25–30; corollas white, throats narrowly cylindric (lengths 4–6 times diams.); styles: bases not enlarged, glabrous, branches ± clavate. Receptacles flat or convex, epaleate. Cypselae prismatic, 4–5-ribbed, scabrellous; pappi persistent, of 3–6 (–12) subulate-aristate scales plus 3–6 (–12) coarse, barbellate bristles in 1 series. x = 9.

Distribution

w United States, nw Mexico

Discussion

Species 3 (1 in the flora).

"fine" is not a number.

... more about "Pleurocoronis"
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
indeterminate +  and determinate +
Guy L. Nesom +
R. M. King & H. Robinson +
decurrent +
not enlarged +
3-nerved +  and 1-nerved +
dissected +, lobed +, toothed +  and entire +
rhombic;lanceolate +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
scabrellous +
prismatic +
fertile +  and bisexual +
w United States +  and nw Mexico +
Greek pleura, side, and korone, crown, alluding to squamellae that appear to form a crown subtending bristles +
stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
in loose , corymbiform arrays +  and singly +
indeterminate +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
lanceolate +  and lance-linear +
toothed +  and entire +
2-carpellate +
persistent +
3-nerved +  and 1-nerved +
30 +  and 35 +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
king1967a +
3 +  and 6 +
subulate-aristate +
exalbuminous +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Pleurocoronis +
Asteraceae tribe Eupatorieae +
cylindric +
perennial +, biennial +  and annual +
shrub +  and subshrub +