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shiny leaf sandpaper plant, smooth sandpaper plant

Parry's sandpaper plant

Habit Subshrubs or shrubs, bushy to moundlike, to 6 dm; branches of current season 11–37 cm. Shrubs, bushy to moundlike, to 15 dm; branches of current season to 13 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.

petiole 0.5–3.5 mm;

blade ovate to elliptic, without marked size dimorphism, to 40 × 30 mm, base acute to rounded, margins usually crenate to serrate, sometimes small leaves entire, apex acute.

Inflorescences

10–30-flowered.

35–65-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.

strongly bilaterally symmetric;

petals spatulate, 10–15 mm, claws postgenitally distally coherent, forming slitted corolla tube;

stamens exserted laterally through slits between petal claws.

2n

= 46.

= 46.

Petalonyx nitidus

Petalonyx parryi

Phenology Flowering Mar–Aug. Flowering Apr–Jul.
Habitat Sandy, gravelly, or rocky canyon slopes, arroyo bottoms, scrub. Wash bottoms, desert plains, usually white to gray, clayey soils.
Elevation 400–2200 m. [1300–7200 ft.] 400–1300 m. [1300–4300 ft.]
Distribution
from FNA
AZ; CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; NV; UT
[BONAP county map]
Parent taxa Loasaceae > Petalonyx Loasaceae > Petalonyx
Sibling taxa
P. linearis, P. parryi, P. thurberi
P. linearis, P. nitidus, P. thurberi
Name authority S. Watson: Amer. Naturalist 7: 300. (1873) A. Gray: Proc. Amer. Acad. Arts 10: 72. (1874)
Source Flora of North America vol. 12, p. 544. Flora of North America vol. 12, p. 544.
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