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Petrorhagia dubia

Higher Taxonomy
Family: CaryophyllaceaeView DescriptionDichotomous Key

Common Name: PINK FAMILY
Habit: Annual to perennial herb; rarely dioecious (Silene), taprooted or rhizome generally slender. Leaf: simple, generally opposite (subwhorled), entire, pairs at nodes often +- connected at bases; stipules generally 0; petiole generally 0. Inflorescence: generally cyme, generally open; flowers 1--many; involucre generally 0 (present in Dianthus, Petrorhagia). Flower: generally bisexual, radial; hypanthium often present but obscure; sepals (4)5, +- free or fused into a tube, margins generally scarious, more so on inner 2 or not, tube generally not scarious, awns generally 0; petals (4)5 or 0, generally tapered to base (or with claw long, limb expanded), entire to 2--several-lobed, limb generally without scale-like appendages adaxially, generally without ear-like lobes at base; stamens generally 10, generally fertile, generally free, generally from ovary base; nectaries 0 or 5; ovary superior, generally 1-chambered, placentas basal or free-central, styles 2--5 with 0 branches or 1 with 2--3 branches. Fruit: capsule or utricle (rarely +- dehiscent), generally sessile. Seed: appendage generally 0 (present in Moehringia).
Genera In Family: 83 or 89 genera, 3000 species: widespread, especially arctic, alpine, temperate northern hemisphere; some cultivated (Agrostemma, Arenaria, Cerastium, Dianthus, Gypsophila, Lychnis, Sagina, Saponaria, Silene, Vaccaria). Note: Apetalous Caryophyllaceae can also be keyed in Rabeler & Hartman 2005 FNANM 5:5--8.
eFlora Treatment Author: Ronald L. Hartman & Richard K. Rabeler, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: PetrorhagiaView DescriptionDichotomous Key

Habit: Annual, erect, taprooted. Leaf: base sheathing, 1--9+ mm; blade linear to lance-linear; veins 3. Inflorescence: terminal, head-like; flowers generally few to several; involucre bracts 2--6, 5--12 mm wide, widely ovate, +- red to brown, scarious; pedicels 0--3 mm, hidden by involucre. Flower: sepals 5, fused, glabrous to sparsely, minutely hairy, tube prominent, 8--14 mm, 1--3 mm diam, cylindric, scarious between sepals, veins 15, lobes 0.5--1.8 mm, < tube, rounded; petals 5, 10--14 mm, claw long, limb entire or 2-lobed; styles 2, 9--12 mm. Fruit: capsule, ovoid; stalk 0.2--0.7 mm; valves 4, ascending to recurved. Seed: many, black-brown to black.
Species In Genus: 33 species: Mediterranean to central Asia. Etymology: (Greek: rock fissure, from habitat of some species)
Reference: Rabeler & Hartman 2005 FNANM 5:162--165

Petrorhagia dubia (Raf.) G. López & Romo
Habit: Annual, erect, 9.5--60 cm. Stem: middle internodes often densely glandular-tomentose. Leaf: sheath length 2--3 × width, (3)4--9 mm; blade 10--60 mm, linear to oblong, lowermost oblanceolate. Inflorescence: involucre bracts mucronate. Flower: petals obcordate to 2-lobed, +- pink, veins 5--6, dark. Seed: 1--1.4 mm, conic-papillate. Chromosomes: 2n=30.
Ecology: Disturbed areas, woodland savanna; Elevation: < 1800 m. Bioregional Distribution: KR, NCoR, CaRF, n SNF, n&c SNH, ScV, CCo, SCoRO, PR; Distribution Outside California: Texas to Mississippi; native to southern Europe, northern Africa. Flowering Time: Spring--early summer
Synonyms: Kohlrauschia velutina (Guss.) Rchb.; Petrorhagia velutina (Guss.) P.W. Ball & Heywood;
eFlora Treatment Author: Ronald L. Hartman & Richard K. Rabeler
Reference: Rabeler & Hartman 2005 FNANM 5:162--165
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botanical illustration including Petrorhagia dubia


Citation for this treatment: Ronald L. Hartman & Richard K. Rabeler 2012, Petrorhagia dubia, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 25, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on September 25, 2018.

Petrorhagia dubia
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© 2008 Keir Morse
Petrorhagia dubia
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© 2005 George W. Hartwell
Petrorhagia dubia
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© 2017 California Academy of Sciences
Petrorhagia dubia
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© 2005 Steve Matson
Petrorhagia dubia
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© 2009 Barry Breckling
Petrorhagia dubia
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© 2008 George W. Hartwell

More photos of Petrorhagia dubia in CalPhotos

Geographic subdivisions for Petrorhagia dubia:
KR, NCoR, CaRF, n SNF, n&c SNH, ScV, CCo, SCoRO, PR;
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.
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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.