Common Name: ROCK-ROSE FAMILY Habit: Annual to shrub, aromatic, of sunny areas, often sandy or chalky substrates; hairs nonglandular, in stellate clumps or not, peltate or not, and/or glandular. Leaf: simple, alternate or opposite [whorled], often +- reduced, entire or not, petioled or not, stipuled or not. Inflorescence: raceme- or panicle-like cymes or flowers 1. Flower: generally bisexual, +- radial; sepals 3 or 5 (outer 2 often narrower), free or fused at very base, often persistent in fruit, 3 twisted in direction opposite that of petals; petals [0(3)]4--5, generally ephemeral; stamens (3--10) many, free, often sensitive to touch, +- persistent in fruit or not; ovary superior, chambers 1 (or +- 3--12 from intruded parietal placentas), style 0--1, stigma 1(3), lobes 0 or 3--12. Fruit: loculicidal capsule, valves 3--12. Seed: [1--]3--many. Genera In Family: 8 genera, +- 175 species: temperate, especially southeastern United States, Mediterranean; some cultivated (Cistus; Crocanthemum; Tuberaria). Note: Flowers open in sunshine for < 1 day. Taxa of Helianthemum in TJM2 treated here in Crocanthemum. eFlora Treatment Author: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin, except as noted Scientific Editor: Thomas J. Rosatti, Bruce G. Baldwin.
Common Name: ROCK-ROSE Habit: Shrub, evergreen. Stem: < 2.5 m. Leaf: generally opposite, petioled or not; stipules 0. Inflorescence: panicle-like or flowers 1. Flower: sepals 3 or 5; petals 4--5, white (often drying +- yellow) or rose to purple, with red or yellow near base or not, often +- wrinkled; ovary 1-chambered, placentas 5, style 0 or 1, stigma large, hemispheric, 5--12-lobed. Fruit: valves 5--12. Etymology: (Ancient Greek name) Note: Plants including hybrids sometimes escape cultivation; scented resin from some species may be myrrh of biblical, other references. eFlora Treatment Author: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin Reference: Guzman & Vargas 2005 Molec Phylogen Evol 37:644--660
Cistus psilosepalus Sweet
URBAN WEED Stem: < 1 m; hairs generally glandular and nonglandular. Leaf: sessile, 20--70 mm, linear- to ovate-oblong, wrinkled adaxially, main veins from base generally 3; margin +- not rolled under, generally ciliate. Inflorescence: 1--5-flowered; pedicel 5--15 mm. Flower: sepals 5, outer cordate at base; petals 1--1.5 cm, white; style +- 0. Fruit: valves 5. Chromosomes: 2n=18. Ecology: Uncommon. Disturbed places; Elevation: < 300 m. Bioregional Distribution: CCo, SnFrB; Distribution Outside California: native to southwestern Europe. Flowering Time: May--Oct Note: Plants have been mistaken for Cistus monspeliensis L. Jepson eFlora Author: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin Reference: Guzman & Vargas 2005 Molec Phylogen Evol 37:644--660 Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Cistus monspeliensis Next taxon: Cistus salviifolius
Citation for this treatment: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin 2012, Cistus psilosepalus, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=81373, accessed on April 18, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 18, 2024.
No expert verified images found for Cistus psilosepalus.
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(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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Consortium of California Herbaria.
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