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Orobanche fasciculata

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 fasciculata Nutt.
Stem: 1 or clustered, 5--20 cm, branched or not. Inflorescence: raceme, +- flat-topped, generally 5--20-flowered; bracts > 6, glandular-puberulent; pedicels 3--15 cm, distal shorter, bractlets 0. Flower: calyx lobes 5, 3--7 mm, generally < tube, deltate, generally +- acuminate; corolla 15--30 mm, curved, becoming erect, generally +- pink or yellow, lobes rounded to narrowly acute; anthers generally hairy; stigma 2-lobed, recurved; orange nectary gland at base of ovary. Chromosomes: 2n=48.
Ecology: Dry, generally +- bare places, generally on shrubs (generally Artemisia, Eriodictyon, Eriogonum, Galium); Elevation: < 3300 m. Bioregional Distribution: CA-FP, GB, DMtns; Distribution Outside California: to Yukon Territory, central North America, northern Mexico. Flowering Time: Apr--Jul Note: Undescribed plants intermediate to Orobanche uniflora, with prominent red nectary gland at base of ovary are scattered in CA-FP, on Galium.
eFlora Treatment Author: Alison E.L. Colwell & Lawrence R. Heckard
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botanical illustration including Orobanche fasciculata


Citation for this treatment: Alison E.L. Colwell & Lawrence R. Heckard 2016. Orobanche fasciculata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 03, 2016.

Orobanche fasciculata
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© 2015 Keir Morse
Orobanche fasciculata
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© 2005 Steve Matson
Orobanche fasciculata
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© 2015 Keir Morse
Orobanche fasciculata
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© 2007 Neal Kramer
Orobanche fasciculata
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© 2008 Keir Morse
Orobanche fasciculata
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© 2006 James M. Andre

More photos of Orobanche fasciculata in CalPhotos

Geographic subdivisions for Orobanche fasciculata:
CA-FP, GB, DMtns;
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).

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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.
Blue line denotes eFlora flowering time.