Jepson eFlora: Taxon page
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Pedicularis attollens

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: PedicularisView DescriptionDichotomous Key

Common Name: LOUSEWORT
Habit: Perennial herb, +- green. Stem: decumbent to erect, generally 1--several from generally short caudex. Leaf: alternate, generally +- basal, generally < inflorescence, toothed or generally > 7-lobed, generally reduced distally on stem; petiole generally < blade. Inflorescence: raceme, spike-like; bracts (at least proximal) generally +- like distal leaves; pedicels 1--6 mm. Flower: calyx lobes (2,4)5, distal-most generally shortest (all generally < tube), lateral fused in pairs; corolla white or yellow to red or purple, upper lip hood- or beak-like, curved or not, lower lip 3-lobed, narrow to fan-shaped, central lobe generally smallest; fertile stamens 4, generally glabrous, anthers generally included, sacs 2 per stamen, equal; stigma head-like, generally exserted. Fruit: generally +- ovate or lanceolate in outline, asymmetric, opening mostly on upper side. Seed: smooth or netted.
Species In Genus: +- 500 species: cool wet northern temperate, circumboreal, South America. Etymology: (Latin: lice, from belief that ingestion by stock promoted lice infestation)
eFlora Treatment Author: Linda Ann Vorobik

Pedicularis attollens A. Gray
Stem: 6--60 cm, tomentose distally. Leaf: basal 3--20 cm, +- linear, segments 17--41, linear, toothed. Inflorescence: 2--30 cm; bracts densely hairy, < flowers. Flower: calyx 4--6 mm, tomentose; corolla 4.5--7 mm, light pink to purple, marked darker, glabrous, upper lip 3.5--6 mm, curved upward, beak 3--5 mm, lower lip 3--5 mm, +- fan-like; anthers +- 1 mm, base obtuse. Fruit: 6--10 mm. Seed: 2.5--4 mm, surface finely netted.
Ecology: Wet meadows, streamsides, bogs; Elevation: 1200--4000 m. Bioregional Distribution: KR, CaR, SNH, MP, W&I; Distribution Outside California: Oregon. Flowering Time: Jun--Sep
eFlora Treatment Author: Linda Ann Vorobik
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botanical illustration including Pedicularis attollens


Citation for this treatment: Linda Ann Vorobik 2016. Pedicularis attollens, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 29, 2016.

Pedicularis attollens subsp. attollens
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© 2009 Gary A. Monroe
Pedicularis attollens
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© 2009 Keir Morse
Pedicularis attollens subsp. attollens
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© 2009 Gary A. Monroe
Pedicularis attollens
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© 2015 Neal Kramer
Pedicularis attollens
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© 2011 Aaron E. Sims
Pedicularis attollens
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© 2008 Neal Kramer

More photos of Pedicularis attollens in CalPhotos

Geographic subdivisions for Pedicularis attollens:
KR, CaR, SNH, MP, W&I;
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.