Difference between revisions of "Tetraneuris herbacea"

Greene

Pittonia 3: 268. 1898.

Endemic
Synonyms: Actinea herbacea (Greene) B. L. Robinson Hymenoxys acaulis var. glabra (A. Gray) K. F. Parker Hymenoxys herbacea (Greene) Cronquist
Treatment appears in FNA Volume 21. Treatment on page 451. Mentioned on page 448.
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|tribe=Asteraceae tribe Heliantheae
 
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|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae

Latest revision as of 21:08, 5 November 2020

Perennials, 6–35+ cm. Caudices ± branched, branches notably thickened distally. Stems 1–10, erect, unbranched. Leaves all basal, new leaves tightly clustered; blades spatulate or oblanceolate to linear-oblanceolate, entire, glabrous or sparsely to rarely moderately hairy, moderately to densely gland-dotted. Heads 1–10 per plant, borne singly. Peduncles 5–35 cm, ± hairy proximally, densely hairy distally. Involucres 10–15 × 12–20 mm. Outer phyllaries 8–12, 5–7.5 mm, margins 0–0.2 mm wide, sometimes slightly scarious, abaxial faces ± hairy. Ray florets 14–27; corollas 11.8–20 mm. Disc florets 50–100+; corollas yellow, 3.4–4 mm. Cypselae 2.4–3.4 mm; pappi of 4–7 obovate, usually non-aristate scales 1.9–2.2 mm. 2n = 28.


Phenology: Flowering (Apr–)May–Jun(–Oct).
Habitat: Alvars (limestone flats), openings in woods
Elevation: 200 m

Discussion

Tetraneuris herbacea is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.