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Petalonyx linearis

Higher Taxonomy
Family: LoasaceaeView DescriptionDichotomous Key

Common Name: LOASA FAMILY
Habit: Annual to subshrub; hairs needle-like, barbed, occasionally stinging. Leaf: alternate [opposite], generally +- pinnate-lobed; stipules 0. Inflorescence: cyme, raceme. Flower: bisexual, radial; sepals generally 5, generally persistent; petals generally 5, free or fused to each other or filament tube; stamens 5--many, filaments thread-like to flat, occasionally fused at base or in clusters; petal-like staminodes occasionally present; pistil 1, ovary inferior, chamber generally 1, placentas generally 3, parietal, style 1. Fruit: capsule or achene. Seed: 1--many.
Genera In Family: 18+ genera, 250 species: especially America (Africa, Pacific).
eFlora Treatment Author: Larry Hufford & Barry Prigge, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: PetalonyxView DescriptionDichotomous Key

Common Name: SANDPAPER-PLANT
Habit: Subshrub; hairs barbed. Leaf: linear to +- round, entire to toothed; base tapered to cordate. Inflorescence: raceme, generally terminal; bracts 3 per flower, outer 1 > inner 2. Flower: sepals +- deciduous; petals free or claws adherent, fused below blades; stamens generally 5, free; ovary +- ovoid, placenta 1, stigma 1. Fruit: achene, +- ovoid, generally 5-veined or -ribbed, erect. Seed: 1, 1.5--2.5 mm, +- fusiform, generally smooth. Chromosomes: 2n=46.
Species In Genus: 5 species: southwestern United States, northwestern Mexico. Etymology: (Greek: petal claw)

Petalonyx linearis Greene
NATIVE
Habit: Plant 15--100 cm. Leaf: generally sessile, 10--25 mm, linear to narrowly (ob)lanceolate, obtuse to acute, entire to irregularly toothed. Inflorescence: 4--10 cm; outer bract 5--8 mm, ovate to +- round; inner bracts 3--4 mm, ovate, +- cordate, acute to notched, lobed; pedicels 1--2 mm. Flower: petals 2--5.5 mm, free, white; stamens 3--7 mm, +- exserted; style +- 3--6 mm.
Ecology: Sandy or rocky canyons, generally in creosote-bush scrub; Elevation: < 1000 m. Bioregional Distribution: se DMoj, DSon; Distribution Outside California: southwestern Arizona, northwestern Mexico. Flowering Time: Mar--May
eFlora Treatment Author: Larry Hufford & Barry Prigge
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Citation for this treatment: Larry Hufford & Barry Prigge 2016. Petalonyx linearis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=37311, accessed on December 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 03, 2016.


Petalonyx linearis
click for enlargement
© 2015 Keir Morse
Petalonyx linearis
click for enlargement
© 2015 Keir Morse
Petalonyx linearis
click for enlargement
© 2015 Keir Morse
Petalonyx linearis
click for enlargement
© 2015 Keir Morse
Petalonyx linearis
click for enlargement
© 2015 Keir Morse
Petalonyx linearis
click for enlargement
© 2015 Keir Morse

More photos of Petalonyx linearis in CalPhotos


Geographic subdivisions for Petalonyx linearis:
se DMoj, DSon;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.