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perkysue

Habit 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.

Peduncles

2–13.5 cm, usually densely hairy.

Involucres

(5–)7–10 × 8–15 mm.

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.

Outer phyllaries

8–11, 4–6.5 mm, margins 0–0.3 mm wide, usually scarious, abaxial faces densely hairy.

Heads

1–10(–30) per plant (1–7 per stem), borne singly or in paniculiform to corymbiform arrays.

Cypselae

2.4–3.1 mm;

pappi of 5–6 obovate, aristate scales 2.1–3.5 mm.

2n

= 30, 60.

Tetraneuris argentea

Phenology Flowering (Apr–)May–Aug(–Sep).
Habitat Roadsides, hillsides, open treeless areas, edges of woods
Elevation (1500–)2000–2400(–3000) m ((4900–)6600–7900(–9800) ft)
Distribution
from FNA
AZ; NM
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 450.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Tetraneuris
Sibling taxa
T. acaulis, T. herbacea, T. ivesiana, T. linearifolia, T. scaposa, T. torreyana, T. turneri, T. verdiensis
Synonyms Actinella argentea, Hymenoxys argentea, T. formosa, T. leptoclada, T. trinervata
Name authority (A. Gray) Greene: Pittonia 3: 269. (1898)
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