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sunflower goldeneye, toothleaf goldeneye

Habit Perennials, 100–200 cm.
Leaves

opposite (proximal) or alternate (distal);

petioles 10–55 mm;

blades ovate or rhombic-ovate to lance-ovate or lanceolate, 3.5–12.5 × 1–8 cm, margins serrate or serrulate, faces strigose.

Peduncles

3–14 cm.

Heads

usually 3–9+ in ± corymbiform arrays.

Involucres

11–18 × 7–10 mm.

Ray florets

10–14;

tubes 1 mm, laminae 7–15 mm.

Disc florets

50+;

corollas 3–4 mm (staminal filaments hairy).

Cypselae

3.5–3.8 mm, ± strigose;

pappi of 2 lacerate, aristate scales 2.2–2.8 mm plus 2–4 lacerate scales 0.5–0.7 mm.

Phyllary

apices abruptly narrowed to acuminate or spatulate (phyllary bases broad, indurate, apices herbaceous).

Paleae

6.5 mm, apices prominently cuspidate.

2n

= 34.

Viguiera dentata

Phenology Flowering Jun–Oct.
Habitat Dry slopes and canyons, fields, roadside ditches
Elevation 100–2300 m [300–7500 ft]
Discussion

Viguiera dentata is widespread and variable. It is unique in Helianthinae in the hairy staminal filaments. The name V. dentata var. lancifolia S. F. Blake has been used for plants from Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Distribution
from FNA
AZ; NM; TX; Mexico; Central America; West Indies (Cuba)
[WildflowerSearch map]
[BONAP county map]
Parent taxa Asteraceae > tribe Heliantheae > subtribe Helianthinae > Viguiera
Sibling taxa
V. cordifolia, V. stenoloba
Synonyms Helianthus dentatus
Name authority (Cavanilles) Sprengel: Syst. Veg. 3: 615. (1826)
Source Flora of North America vol. 21, p. 173.
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