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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 2017. Orobanche fasciculata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 23, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on September 23, 2017.

Orobanche fasciculata
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© 2015 Keir Morse
Orobanche fasciculata
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© 2016 Vernon Smith
Orobanche fasciculata
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© 2011 Neal Kramer
Orobanche fasciculata
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© 2006 James M. Andre
Orobanche fasciculata
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© 2015 Keir Morse
Orobanche fasciculata
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© 2015 Keir Morse

More photos of Orobanche fasciculata in CalPhotos

Geographic subdivisions for Orobanche fasciculata:
CA-FP, GB, DMtns;
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.
Blue line denotes eFlora flowering time.