Difference between revisions of "Rudbeckia texana"
Phytologia 67: 366. 1989.
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{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Rudbeckia texana | |accepted_name=Rudbeckia texana | ||
| − | |accepted_authority=(Perdue) P. B. | + | |accepted_authority=(Perdue) P. B. Cox & Urbatsch |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=Phytologia | |title=Phytologia | ||
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}} | }} | ||
|common_names=Texas coneflower | |common_names=Texas coneflower | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Rudbeckia nitida var. texana | |name=Rudbeckia nitida var. texana | ||
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name=Rudbeckia texana | name=Rudbeckia texana | ||
| − | |authority=(Perdue) P. B. | + | |authority=(Perdue) P. B. Cox & Urbatsch |
|rank=species | |rank=species | ||
|parent rank=section | |parent rank=section | ||
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|publication title=Phytologia | |publication title=Phytologia | ||
|publication year=1989 | |publication year=1989 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_107.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae | ||
Latest revision as of 14:05, 30 November 2021
Perennials, to 150 cm (rhizomatous, roots fibrous). Leaves green, blades elliptic to lanceolate (not lobed), ± leathery, bases attenuate to cuneate, margins entire, serrate, or toothed, apices acute to acuminate, faces glabrous or sparsely hairy; basal 15–50 × 3–9 cm; cauline petiolate or sessile, 5–50 × 2–12 cm. Heads borne singly or (2–5) in ± corymbiform arrays. Phyllaries to 2.5 cm (margins sometimes ciliate). Receptacles ovoid to ellipsoid; paleae 6–8 mm, apices acute (appressed in young heads), abaxial tips hairy. Ray florets 10–16; laminae oblong to oblanceolate, 20–50 × 8–12 mm, abaxially hairy. Discs 20–45 × 10–20 mm. Disc florets 200–500+; corollas proximally greenish yellow, distally maroon, 3.5–5 mm; style branches ca. 2 mm, apices acute. Cypselae 5–7.5 mm; pappi coroniform, to 1.5 mm. 2n = 36.
Phenology: Flowering late spring–fall.
Habitat: Swales, prairies, ditches, bayous
Elevation: 0–50 m
Discussion
Rudbeckia texana grows in western Louisiana and eastern Texas.
Selected References
None.