Thymophylla tephroleuca

Subshrubs or shrubs, ashy white, 10–30 cm, lanate to tomentose. Stems erect. Leaves all or mostly alternate; blades not lobed, linear to filiform, 10–15 × 0.3–1 mm, margins usually entire, sometimes 3-fid distally. Peduncles 10–30 mm, tomentose. Calyculi of 3–4 linear bractlets, lengths 1/2+ phyllaries. Involucres campanulate, 5–7 mm. Phyllaries 12–13, margins of outer distinct less than 1/4 their lengths, abaxial faces tomentose. Ray florets 12–13; corollas golden yellow, laminae 6–8 × 3–4 mm. Disc florets ca. 30; corollas yellow, 4.5–5 mm. Cypselae 3–4 mm; pappi of 10–11 subequal scales 4–5 mm (each 3–5-aristate). 2n = 16.

Phenology: Flowering early spring and late summer, following rains.
Habitat: Light, sandy soils
Elevation: 50–100 m

Distribution

• Generated Map
• Legacy Map

Tex.

Discussion

Of conservation concern.

Thymophylla tephroleuca probably grows also in adjacent Mexico. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.