Jepson eFlora: Taxon page
Key to families | Table of families and genera | Map
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
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
Jepson Online Interchange

Previous taxon: Orobanche cooperi
Next taxon: Orobanche fasciculata

Name Search
botanical illustration including Orobanche corymbosa


Citation for this treatment: Alison E.L. Colwell & Lawrence R. Heckard 2017. Orobanche corymbosa, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 26, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on September 26, 2017.

Orobanche corymbosa
click for enlargement
© 2011 Steve Matson
Orobanche corymbosa
click for enlargement
© 2017 Neal Kramer
Orobanche corymbosa
click for enlargement
© 2012 Aaron Schusteff
Orobanche corymbosa
click for enlargement
© 2009 James M. Andre
Orobanche corymbosa
click for enlargement
© 2008 Steve Matson
Orobanche corymbosa
click for enlargement
© 2012 Aaron Schusteff

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. 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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.