Tetraneuris ivesiana

Greene

Pittonia 3: 269. 1898.

Endemic
Synonyms: Hymenoxys acaulis var. ivesiana (Greene) K. F. Parker Hymenoxys argentea var. ivesiana (Greene) Cronquist Hymenoxys ivesiana (Greene) K. F. Parker Tetraneuris intermedia Greene Tetraneuris mancosensis A. Nelson Tetraneuris pilosa Greene
Treatment appears in FNA Volume 21. Treatment on page 450. Mentioned on page 447, 448.

Perennials, 10–26+ cm. Caudices ± branched, branches notably thickened distally. Stems (1–)5–20(–30), erect, leafy, ± branched distally. Leaves basal and cauline, entire, glabrous or sparsely to moderately lanuginose to sericeous, usually densely gland-dotted; basal leaves tightly clustered, blades linear-oblanceolate; proximal cauline blades linear-oblanceolate; mid blades linear-oblanceolate to linear, 1.7–2 mm wide; distal blades linear-oblanceolate to linear. Heads (1–)5–30(–40) per plant (1–5 per stem), borne singly or in paniculiform to corymbiform arrays. Peduncles 5–18.5 cm, ± hairy, usually densely hairy distally. Involucres 8–12 × 13–17 mm. Outer phyllaries 7–12, 5–6.4 mm, margins 0–0.3(–0.4) mm wide, usually scarious, abaxial faces ± hairy. Ray florets 7–10; corollas 10–20 mm. Disc florets (40–)80–150+; corollas yellow, 3.3–4.5 mm. Cypselae 3–4.1 mm; pappi of 5–7 lanceolate or obovate to oblanceolate, aristate scales 2.7–4.5 mm. 2n = 28, 30, 56, 60.


Phenology: Flowering Apr–Aug.
Habitat: Roadsides, hillsides, open treeless areas, edges of woods
Elevation: 1300–2900 m

Distribution

V21-1129-distribution-map.gif

Ariz., Colo., N.Mex., Utah.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Tetraneuris ivesiana"
Mark W. Bierner +  and Billie L. Turner +
Greene +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
1300–2900 m +
Roadsides, hillsides, open treeless areas, edges of woods +
Flowering Apr–Aug. +
Hymenoxys acaulis var. ivesiana +, Hymenoxys argentea var. ivesiana +, Hymenoxys ivesiana +, Tetraneuris intermedia +, Tetraneuris mancosensis +  and Tetraneuris pilosa +
Tetraneuris ivesiana +
Tetraneuris +
species +