Difference between revisions of "Ratibida tagetes"
Bull. Torrey Bot. Club 24: 410. 1897.
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|common_names=Green Mexican-hat or prairie coneflower;shortray prairie coneflower | |common_names=Green Mexican-hat or prairie coneflower;shortray prairie coneflower | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Rudbeckia tagetes | |name=Rudbeckia tagetes | ||
|authority=E. James | |authority=E. James | ||
| + | |rank=species | ||
| + | |publication_title=Account Exped. Pittsburgh | ||
| + | |publication_place=2: 68. 1823 | ||
}} | }} | ||
|synonyms= | |synonyms= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Ratibida tagetes | name=Ratibida tagetes | ||
| − | |||
|authority=(E. James) Barnhart | |authority=(E. James) Barnhart | ||
|rank=species | |rank=species | ||
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|publication year=1897 | |publication year=1897 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_140.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 21:10, 5 November 2020
Perennials, to 55 cm; taprooted. Leaves (proximal sometimes lanceolate, usually pinnately lobed; cauline mostly 1–2-pinnately lobed) 0.5–9 × 0.2–6.7 cm, lobes 2–7, linear to narrowly lanceolate-obovate, 0.5–4 mm wide, faces strigose and gland-dotted. Heads 1–8+, held just beyond leaves. Peduncles 0.3–6.5 cm (± uniformly green, not ribbed). Phyllaries 10–12, outer lanceolate, 1.2–6 × 0.5–2.5 mm, inner lanceolate-ovate, 1.2–4 × 0.3–1.5 mm. Paleae oblong, 2–4 × 1.5–2.5 mm, resin glands linear to oblanceolate, 1–2 mm. Ray florets 5–10; corollas yellow or purplish yellow to purple, laminae linear to elliptic-oblanceolate, 3–10 × 2–6 mm. Discs subspheric to ovoid or ellipsoid, 5–15 × 5–14 mm. Disc florets 50–200+; corolla greenish yellow, sometimes purplish distally, 1.2–2.5 mm; style branches 0.8–1.2 mm, proximal 1/2 stigmatic, apices subulate. Cypselae oblong-oblique, 1.9–2.8 × 1.2–2 mm, adaxial margins usually winged and distally ciliate, apices ciliate; pappi coroniform (of connate scales, 0.2–1.5 mm). 2n = 32.
Phenology: Flowering May–Oct.
Habitat: Prairies, high plains, rocky hillsides
Elevation: 300–2500 m
Distribution
Ariz., Colo., Kans., N.Mex., Okla., Tex., Mexico (Chihuahua).
Discussion
Selected References
None.