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 incanus L.
NATURALIZED Stem: < 1.3 m; hairs generally glandular and nonglandular. Leaf: petiole 0--15 mm; blade elliptic, tapered to base, +- wrinkled adaxially, main veins from base generally 1, margin +- wavy. Inflorescence: (1)10-flowered; pedicel generally < 2 cm. Flower: sepals 5, lance-ovate, acuminate; petals 2--3 cm, rose to purple; style thread-like, +- = stamens. Fruit: valves 5. Chromosomes: 2n=18. Ecology: Uncommon. Disturbed places; Elevation: < 1000 m. Bioregional Distribution: n&s CCo, n SCo, SnGb, WTR (Liebre Mtns), PR; Distribution Outside California: native to southern Europe. Flowering Time: Jan--Aug Note: Possibly naturalizing in Klamath Ranges on I-5 median north of Shasta Lake. Synonyms: Cistus creticus L.; Cistus incanus subsp. corsicus (Loisel.) Heywood; Cistus incanus subsp. creticus (L.) Heywood; Cistus incanus subsp. incanus; Cistus villosus L.; Cistus villosus var. corsicus (Loisel.) Grosser, ined.?; Cistus villosus var. tauricus Grosser, ined.?; Cistus villosus var. undulatus Grosse, ined.? 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 Next taxon: Cistus ladanifer
Citation for this treatment: John W. Thieret & Elizabeth McClintock, final revision by Thomas J. Rosatti & Bruce G. Baldwin 2012, Cistus incanus, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=19512, accessed on April 23, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 23, 2024.
Geographic subdivisions for Cistus incanus:
n&s CCo, n SCo, SnGb, WTR (Liebre Mtns), PR
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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).
Data provided by the participants of the
Consortium of California Herbaria.
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CCH collections by month
Duplicates counted once; synonyms included.
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Blue line denotes eFlora flowering time (fruiting time in some monocot genera).