Difference between revisions of "Helianthus verticillatus"

Small

Bull. Torrey Bot. Club 25: 479. 1898.

Common names: Whorled sunflower
EndemicConservation concern
Treatment appears in FNA Volume 21. Treatment on page 166. Mentioned on page 142, 145.
FNA>Volume Importer
imported>Volume Importer
Line 8: Line 8:
 
}}
 
}}
 
|common_names=Whorled sunflower
 
|common_names=Whorled sunflower
 +
|special_status={{Treatment/ID/Special_status
 +
|code=E
 +
|label=Endemic
 +
}}{{Treatment/ID/Special_status
 +
|code=C
 +
|label=Conservation concern
 +
}}
 
|basionyms=
 
|basionyms=
 
|synonyms=
 
|synonyms=
Line 47: Line 54:
 
|publication title=Bull. Torrey Bot. Club
 
|publication title=Bull. Torrey Bot. Club
 
|publication year=1898
 
|publication year=1898
|special status=
+
|special status=Endemic;Conservation concern
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_400.xml
+
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V21_400.xml
 
|tribe=Asteraceae tribe Heliantheae
 
|tribe=Asteraceae tribe Heliantheae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae

Revision as of 20:59, 27 May 2020

Perennials, 200–300 cm (rhizomatous). Stems erect, glabrous (glaucous). Leaves cauline; usually whorled (3s–6s), sometimes opposite; sessile or subsessile, petioles 0–1 cm; blades linear to lanceolate, 7.5–18.5 × 0.7–3 cm, bases cuneate, margins serrulate or entire (flat), faces puberulent (abaxial) or hispid-strumose (adaxial), gland-dotted. Heads (1–)3–7+. Peduncles 1–10 cm. Involucres broadly campanulate, 15–20 mm diam. Phyllaries 45–55, lance-linear, 12–18 × 2–2.5 mm, (margins ciliate) apices long-attenuate, abaxial faces glabrate to sparsely puberulent, gland-dotted. Paleae 5–8 mm, entire or 3-toothed (apices ciliate). Ray florets 10–19; laminae 20–26 mm. Disc florets 150+; corollas 5–7 mm, lobes yellow; anthers dark, appendages yellow. Cypselae 4–5 mm, glabrous; pappi of 2 aristate scales 2.2–2.5 mm. 2n = 34.


Phenology: Flowering late summer–fall.
Habitat: Wet prairies
Elevation: 100–300 m

Discussion

Of conservation concern.

Helianthus verticillatus is relatively uncommon and was recently rediscovered in scattered locations; it is a candidate for federal listing as an endangered species. It has been suggested to be a hybrid of H. angustifolius and H. eggertii or H. grosseserratus; no supporting evidence has been found to corroborate that suggestion.

Selected References

None.

Lower Taxa

None.