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Orobanche corymbosa

Higher Taxonomy
Family: OrobanchaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, shrub; often glandular; root-parasites, roots modified into absorptive structures. Stem: generally round in ×-section. Leaf: generally simple, generally alternate, reduced to +- fleshy scales in non-green plants lacking chlorophyll; stipules generally 0. Inflorescence: spike to panicle, generally bracted, or flowers 1--2 in axils. Flower: bisexual; calyx lobes 0--5; corolla generally strongly bilateral, generally 2-lipped (upper lip generally 2-lobed, lower lip generally 3-lobed), abaxial lobes outside other lobes in bud; stamens epipetalous, 4 in 2 pairs (sometimes 1 pair sterile), additional staminode 0(1), anther sacs unequal; ovary superior, chambers 1--2, placentas 2--4, parietal, style 1, stigma lobes 0 or 2. Fruit: capsule, generally +- ovoid, loculicidal, valves 2--4. Seed: many, small, angled; surface smooth or netted.
Genera In Family: 99 genera, 2060 species: worldwide, especially northern temperate and Africa. Note: High yield losses in many crops caused by Orobanche species in Africa, Mediterranean, Middle East, and eastern Europe.
eFlora Treatment Author: Margriet Wetherwax, except as noted
Scientific Editor: Robert Patterson, Bruce G. Baldwin.
Genus: OrobancheView DescriptionDichotomous Key

Common Name: BROOMRAPE
Habit: Annual, perennial herb, not green (holoparasites), generally glandular-puberulent distally; root attachment occasionally tuber-like. Stem: simple or branched. Inflorescence: generally +- spike-like (proximal flowers often short-pedicelled or on short branches), generally dense; flowers generally > 20; bracts generally lanceolate to deltate (wider on peduncle); bractlets 0 or 2. Flower: calyx lobes 4--5; corolla glandular-puberulent, generally lacking ring of hairs at stamen bases, upper lip erect to reflexed, 2-lobed, lower lip 3-lobed, spreading, throat floor with yellow folds; anthers glabrous to hairy; stigma lobes generally 2. Fruit: 2-valved; placentas generally 2, often lobed. Seed: < 0.7 mm.
Species In Genus: 140 species: worldwide, especially Mediterranean. Etymology: (Greek: vetch strangler, from parasitic habit)
eFlora Treatment Author: Alison E.L. Colwell & Lawrence R. Heckard

Orobanche corymbosa (Rydb.) Ferris
Habit: Plant 3--17 cm, pale to purple-tinged aboveground, glandular-puberulent. Stem: branches clustered, stout, generally thickened at base. Inflorescence: 3--4 cm, branched, generally round-topped, few-flowered; proximal pedicels 5--30 mm, distal 0. Flower: calyx 12--18 mm, lobes 5, > tube, linear-triangular; corolla 20--30 mm, sparsely short-glandular, lips 5--8 mm, +- purple to pink, veins darker, upper lobes rounded; anthers densely hairy; stigma 2-lobed, peltate. Chromosomes: 2n=48,96.
Ecology: Openings in sagebrush scrub, generally on Artemisia tridentata; Elevation: 1200--2800 m. Bioregional Distribution: n CaR, SNH, GB, n DMtns (Panamint Range); Distribution Outside California: to British Columbia, Montana, Utah. Flowering Time: Jun--Aug Note: Apparently intergrading with Orobanche californica throughout its California range.
Synonyms: Orobanche californica Cham. & Schltdl. var. corymbosa (Rydb.) Munz
eFlora Treatment Author: Alison E.L. Colwell & Lawrence R. Heckard
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botanical illustration including Orobanche corymbosa


Citation for this treatment: Alison E.L. Colwell & Lawrence R. Heckard 2016. Orobanche corymbosa, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 28, 2016.

Orobanche corymbosa
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© 2012 Aaron Schusteff
Orobanche corymbosa
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© 2009 Barry Breckling
Orobanche corymbosa
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© 2009 Barry Breckling
Orobanche corymbosa
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© 2009 James M. Andre
Orobanche corymbosa
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© 2009 James M. Andre
Orobanche corymbosa
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© 2012 Dana York

More photos of Orobanche corymbosa in CalPhotos

Geographic subdivisions for Orobanche corymbosa:
n CaR, SNH, GB, n DMtns (Panamint Range);
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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).

View elevation by latitude chart
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.