Difference between revisions of "Flourensia"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 592. 1836.
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|accepted_name=Flourensia | |accepted_name=Flourensia | ||
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|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. | |title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. | ||
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name=Flourensia | name=Flourensia | ||
|author=John L. Strother | |author=John L. Strother | ||
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|rank=genus | |rank=genus | ||
|parent rank=subtribe | |parent rank=subtribe | ||
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|publication year=1836 | |publication year=1836 | ||
|special status= | |special status= | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Latest revision as of 20:11, 5 November 2020
Subshrubs or shrubs [trees], to 100(–200)[–500+] cm. Stems erect, branched from bases or ± throughout. Leaves cauline; alternate; petiolate [nearly sessile]; blades pinnately nerved, mostly elliptic to lance-oblong or ovate, bases rounded to cuneate, margins entire [toothed], faces glabrous or ± scabrellous, usually gland-dotted and vernicose. Heads discoid or radiate, borne ± singly or in ± spiciform arrays. Involucres campanulate to hemispheric, 4–20 mm diam. Phyllaries persistent, 12–40 in 2–4+ series (subequal or unequal, outer longer). Receptacles flat to conic-ovoid, paleate (paleae conduplicate, cartilaginous to scarious). Ray florets 0 or [5–]13–21, either neuter, or styliferous and sterile; corollas yellow. Disc florets 10–50[–150], bisexual, fertile; corollas yellow, tubes much shorter than cylindric-funnelform throats, lobes 5, ± deltate. Cypselae ± compressed or flattened [subterete], oblong to oblanceolate (not winged, ± sericeous); pappi persistent or tardily falling, of 2 subulate scales. x = 9.
Distribution
sw United States, Mexico, Central America, South America.
Discussion
Species ca. 30 (2 in the flora).
Selected References
Lower Taxa
Key
| 1 | Shrubs; leaf blades elliptic to ovate, 10–25(–40+) × 4–15(–20) mm; ray florets 0 | Flourensia cernua |
| 1 | Subshrubs; leaf blades elliptic to lance-oblong, (20–)50–100 × 10–40+ mm; ray florets 13–21 | Flourensia pringlei |