Difference between revisions of "Pleurocoronis"
Phytologia 12: 468, fig. pp. 472, 473. 1966.
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| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_1299.xml |
|tribe=Asteraceae tribe Eupatorieae | |tribe=Asteraceae tribe Eupatorieae | ||
|genus=Pleurocoronis | |genus=Pleurocoronis | ||
Revision as of 16:31, 18 September 2019
Subshrubs or shrubs, (10–)30–100 cm. Stems erect, usually much branched. Leaves cauline; mostly opposite (distal often alternate); petiolate; blades 1- 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- 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).