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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

CISTUS ROCK-ROSE
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.
± 20 species: Mediterranean; cultivated as ornamental. (Ancient Greek name) [Guzman & Vargas 2005 Molec Phylogen Evol 37:644–660] Plants including hybrids sometimes escape cultivation; scented resin from some species may be myrrh of biblical, other references.

Key to Cistus

1. Sepals 3; flowers 1 at ends of lateral branchlets ..... C. ladanifer

1' Sepals 5; flowers generally in panicle-like cymes

2. Style thread-like, ± = stamens; petals rose to purple ..... C. incanus

2' Style ± 0; petals white (often drying ± yellow), with red or yellow near base or not

3. Leaf petioled, blade ovate to elliptic, main veins from base generally 1; pedicel 10–100 mm ..... C. salviifolius

3' Leaf sessile, linear to lance-linear or linear- to ovate-oblong, main veins from base generally 3; pedicel 5–15 mm ..... C. monspeliensis

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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