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shiny leaf sandpaper plant, smooth sandpaper plant

Habit Subshrubs or shrubs, bushy to moundlike, to 6 dm; branches of current season 11–37 cm.
Leaves

petiole 1–4 mm;

blade ovate, without marked size dimorphism, to 35 × 28 mm, base acute to obtuse, margins serrate to dentate, apex acute.

Inflorescences

10–30-flowered.

Flowers

slightly bilaterally symmetric through curvature along length of flower;

petals spatulate, 6–11 mm, claws postgenitally distally coherent, forming slitted corolla tube;

stamens exserted laterally through slits between petal claws.

2n

= 46.

Petalonyx nitidus

Phenology Flowering Mar–Aug.
Habitat Sandy, gravelly, or rocky canyon slopes, arroyo bottoms, scrub.
Elevation 400–2200 m. [1300–7200 ft.]
Distribution
from FNA
AZ; CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
Parent taxa Loasaceae > Petalonyx
Sibling taxa
P. linearis, P. parryi, P. thurberi
Name authority S. Watson: Amer. Naturalist 7: 300. (1873)
Source Flora of North America vol. 12, p. 544.
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