Mentzelia aspera

Linnaeus

Sp. Pl. 1: 516. 1753

Common names: Rough stickleaf dal-pega
Treatment appears in FNA Volume 12. Treatment on page 528. Mentioned on page 527, 529.

Plants annual, without caudices or tubers. Stems erect to decumbent, to 30 cm. Leaves: petiole 10–65 mm; blade hastate to ovate, usually basally lobed, sometimes unlobed, to 18 × 10 cm, base cuneate to truncate, margins serrate to crenate, apex acute. Pedicels (fruiting) 1–3 × 2 mm (often appearing absent because thick and continuous with capsule). Flowers: petals orange or yellow, 5–15 × 3–7 mm, apex cuspidate, hairy abaxially at apex; stamens 20–30, 5 mm, filaments heteromorphic, 5 outermost narrowly spatulate, inner filiform; style 5 mm. Capsules subcylindric to clavate, 9–30 × 3–3.5 mm, base tapering gradually, capsule and pedicel not well-differentiated. Seeds 5–9 per capsule, pyriform to oblong, without transverse folds. 2n = 20.


Phenology: Flowering Aug–Oct.
Habitat: Arroyo and canyon bottoms, grasslands, desert scrub, riparian cottonwood and willow vegetation.
Elevation: 100–2000 m.

Distribution

V12 327-distribution-map.jpg

Ariz., Mexico, West Indies, Central America, South America, introduced in Atlantic Islands (Cape Verde Islands).

Discussion

Mentzelia aspera is uncommon in southern Arizona. It is the most widespread species of the genus and is regarded as weedy by some authors (H. J. Thompson and A. M. Powell 1981).

Selected References

None.

Lower Taxa

None.

... more about "Mentzelia aspera"
Larry Hufford +
Linnaeus +
Rough stickleaf +  and dal-pega +
Ariz. +, Mexico +, West Indies +, Central America +, South America +  and introduced in Atlantic Islands (Cape Verde Islands). +
100–2000 m. +
Arroyo and canyon bottoms, grasslands, desert scrub, riparian cottonwood and willow vegetation. +
Flowering Aug–Oct. +
Mentzelia aspera +
Mentzelia sect. Mentzelia +
species +