Flora of North America species comparison

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Petalonyx nitidus

Petalonyx parryi

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]
Source FNA vol. 12, p. 544. FNA vol. 12, p. 544.
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)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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