Flora of North America species comparison

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Petalonyx nitidus

Petalonyx linearis

shiny-leaf sandpaper plant, smooth sandpaper plant

long leaf sandpaper plant, narrow-leaf sandpaper plant
Habit Subshrubs or shrubs, bushy to moundlike, to 6 dm; branches of current season 11–37 cm. Subshrubs, bushy, to 16 dm; branches of current season 10–38 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 0–1 mm;

blade usually elliptic, sometimes falcate, without marked size dimorphism, to 42 × 5 mm, base acute, margins entire, apex rounded to acute.
Inflorescences

10–30-flowered.

60-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.

± radially symmetric;

petals spatulate, 5 mm, claws distinct;

stamens exserted distally (not laterally between petal claws).
2n

= 46.

= 46.

Petalonyx nitidus

Petalonyx linearis
Phenology Flowering Mar–Aug. Flowering Mar–Jun.
Habitat Sandy, gravelly, or rocky canyon slopes, arroyo bottoms, scrub. Sandy and gravelly canyon and arroyo bottoms, creosote bush scrub.
Elevation 400–2200 m. (1300–7200 ft.) 20–1000 m. (100–3300 ft.)
Distribution
from FNA
AZ; CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; Mexico (Baja California, Sonora)
[WildflowerSearch map]
[BONAP county map]
Discussion

Petalonyx linearis is found in the Sonoran Desert.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
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. nitidus, P. parryi, P. thurberi
Name authority S. Watson: Amer. Naturalist 7: 300. (1873) Greene: Bull. Calif. Acad. Sci. 1: 188. (1885)
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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