Jepson eFlora: Taxon page
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Parentucellia viscosa

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: ParentucelliaView DescriptionDichotomous Key

Habit: Annual, green, sticky-hairy, generally erect and unbranched in California. Leaf: generally opposite, sessile, toothed Inflorescence: raceme, spike-like, bracted. Flower: calyx 4-lobed, lobes +- equal, +- lanceolate; corolla 2-lipped, yellow or red-purple, upper lip entire or notched, forming hood, lower lip > upper, 3-lobed; stamens 4, in 2 pairs, included in upper corolla lip, anthers hairy, awned at base. Fruit: cylindric. Seed: many, minute, smooth.
Species In Genus: 2 species: western Europe, Mediterranean, central Asia. Etymology: (Tomaso Parentucelli, early Renaissance librarian to Cosimo de' Medici in Florence; as humanist Pope Nicholas V, 1447--1455, established Vatican library and gardens)

Parentucellia viscosa (L.) Caruel
Stem: < 50 cm. Leaf: 20--40 mm, lanceolate, serrate, green throughout. Inflorescence: dense; bracts leaf-like. Flower: calyx 10--16 mm, lobes lanceolate; corolla +- 20 mm, throat 2-ridged. Fruit: slightly > calyx tube, hairy.
Ecology: Damp, grassy places; Elevation: generally < 700 m. Bioregional Distribution: NCo, NCoRO, NCoRI, CaRF, n&c SNF, ScV, CCo; Distribution Outside California: Oregon; native to Europe. Flowering Time: Apr--Jun
eFlora Treatment Author: Margriet Wetherwax
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botanical illustration including Parentucellia viscosa


Citation for this treatment: Margriet Wetherwax 2016. Parentucellia viscosa, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 21, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on October 21, 2016.

Parentucellia viscosa
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© 2007 Neal Kramer
Parentucellia viscosa
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© 2006 George W. Hartwell
Parentucellia viscosa
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© 2011 California Academy of Sciences
Parentucellia viscosa
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© 2009 Julie Kierstead Nelson
Parentucellia viscosa
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© 2006 George W. Hartwell
Parentucellia viscosa
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© 2013 Neal Kramer

More photos of Parentucellia viscosa in CalPhotos

Geographic subdivisions for Parentucellia viscosa:
NCo, NCoRO, NCoRI, CaRF, n&c SNF, ScV, CCo;
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.