Difference between revisions of "Trixis"
Civ. Nat. Hist. Jamaica, 312, plate 33, fig. 1. 1756.
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|discussion=<p>Species ca. 65 (2 in the flora).</p> | |discussion=<p>Species ca. 65 (2 in the flora).</p> | ||
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|family=Asteraceae | |family=Asteraceae | ||
|distribution=North America;Mexico;West Indies;Central America;South America. | |distribution=North America;Mexico;West Indies;Central America;South America. | ||
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|publication title=Civ. Nat. Hist. Jamaica, | |publication title=Civ. Nat. Hist. Jamaica, | ||
|publication year=1756 | |publication year=1756 | ||
|special status= | |special status= | ||
| − | |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/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V19_11.xml |
|tribe=Asteraceae tribe Mutisieae | |tribe=Asteraceae tribe Mutisieae | ||
|genus=Trixis | |genus=Trixis | ||
Revision as of 19:17, 16 December 2019
Shrubs [herbs], 20–300+ cm (often rhizomatous, stems hairy, hairs gland-tipped and glandless). Leaves cauline; sessile or petiolate; blades elliptic, lanceolate, linear, or linear-lanceolate, bases cuneate, margins dentate or entire, faces (at least abaxial) usually glandular and ± strigose. Heads quasi-radiate (see florets), borne singly or in corymbiform or paniculiform arrays. Involucres ± cylindric, 12–15 mm (subtended by calyculi of 3–7 spreading or ascending bractlets). Phyllaries (reflexed in fruit) in 1–2 series, linear (± keeled), apices acute. Receptacles flat, smooth, hairy, epaleate. Florets 4–25[–60], bisexual, fertile; corollas yellow (aging white), zygomorphic (2-lipped; outer lip liguliform, lobes 3, lance-deltate, inner lip smaller, lobes ± filiform, recurved); anther basal appendages entire, apical appendages oblong, acute; style branches relatively short, apices truncate-penicillate. Cypselae subcylindric to fusiform, often ± beaked, ribs 5, faces glandular-hairy; pappi of 60–80+ dull white [tawny], finely barbed bristles. x = 9.
Distribution
North America, Mexico, West Indies, Central America, South America.
Discussion
Species ca. 65 (2 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Leaves usually ascending, almost parallel with stems, stomates on both faces, induments: abaxial faces glandular and sparsely strigose (sometimes only on veins), adaxial faces glandular and strigose to pilose; papilla-like double hairs of cypselae producing mucilage when wetted | Trixis californica |
| 1 | Leaves usually spreading, stomates on abaxial faces, induments: margins and, sometimes, abaxial midveins with glandless and glandular hairs, otherwise glabrous; papilla-like double hairs of cypselae not producing mucilage when wetted | Trixis inula |