Compilation
Tetraneuris formosa

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Name

Identification
Isotype of Tetraneuris formosa Greene [family ASTERACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Tetraneuris argentea
  • Hymenoxys argentea
  • Tetraneuris formosa

Flora

Entry for Tetraneuris argentea (A. Gray) Greene [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 21,
Names
Tetraneuris argentea (A. Gray) Greene [family COMPOSITAE], Pittonia, 3: 269. 1898
Actinella argentea A. Gray [family COMPOSITAE], Mem. Amer. Acad. Arts, n. s., 4: 100. 1849
Hymenoxys argentea (A. Gray) K. F. Parker [family COMPOSITAE]
Tetraneuris formosa Greene ex Wooton & Standley [family COMPOSITAE]
Tetraneuris leptoclada (A. Gray) Greene [family COMPOSITAE]
Tetraneuris trinervata Greene [family COMPOSITAE]
Treatment Author(s)
Mark W. Bierner
Billie L. Turner
Information
Perennials, 6–25(–42+) cm. Caudices ± branched, branches notably thickened distally. Stems 1–8(–12), erect, leafy, ± branched distally. Leaves basal and cauline, entire, usually densely strigoso-canescent, ± gland-dotted; basal leaves tightly clustered, blades spatulate to oblanceolate; proximal cauline blades oblanceolate; mid blades oblanceolate to linear-oblanceolate, 2.5–5 mm wide; distal blades linear-lanceolate to linear. Heads 1–10(–30) per plant (1–7 per stem), borne singly or in paniculiform to corymbiform arrays. Peduncles 2–13.5 cm, usually densely hairy. Involucres (5–)7–10 × 8–15 mm. Outer phyllaries 8–11, 4–6.5 mm, margins 0–0.3 mm wide, usually scarious, abaxial faces densely hairy. Ray florets 8–14; corollas 11.8–17 mm. Disc florets 25–75(–100+); corollas yellow proximally, yellow or rarely purplish distally, 2.8–3.8 mm. Cypselae 2.4–3.1 mm; pappi of 5–6 obovate, aristate scales 2.1–3.5 mm. 2n = 30, 60.
Phenology
apr-may (spring), jun-aug (summer), sep (fall)
Altitude range
(1500–)2000–2400(–3000) m;
Distribution
USA Ariz.USA N.Mex.

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