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Pedicularis howellii
HOWELL'S LOUSEWORT

Higher Taxonomy
Family: OrobanchaceaeView DescriptionDichotomous Key

Common Name: BROOMRAPE FAMILY
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 howellii A. Gray
NATIVE
Stem: 6--45 cm, glabrous to puberulent; caudex long. Leaf: basal 0 at flower (4--20 cm, widely lanceolate, segments 7--17, ovate, entire-dentate to lobed); cauline leaves 2--9 cm, ovate, lobes or segments 3--5(11), ovate, entire to toothed, terminal >> lateral. Inflorescence: closely subtended by 2--3 leaves, 1.5--4 cm; bracts < flowers, +- deltate, hairy. Flower: calyx 6--7 mm, hairy; corolla 7--9 mm, sickle-shaped, +- white to +- purple, marked darker, glabrous, upper lip 5--6 mm curved, beak +- 4 mm, tapered, lower lip 2--3 mm, +- included in calyx; anthers 1--2 mm, base acute. Fruit: 7--9 mm. Seed: 1.5--2 mm, surface finely netted.
Ecology: Dry ridges, open red-fir forest; Elevation: 1500--1900 m. Bioregional Distribution: n KR; Distribution Outside California: southern Oregon. Flowering Time: Jul--Aug
eFlora Treatment Author: Linda Ann Vorobik
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Pedicularis groenlandica
Next taxon: Pedicularis racemosa

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Citation for this treatment: Linda Ann Vorobik 2016. Pedicularis howellii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=36576, accessed on April 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 28, 2016.


Pedicularis howellii
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© 2012 Dana York

More photos of Pedicularis howellii in CalPhotos


Geographic subdivisions for Pedicularis howellii:
n KR;
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.
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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.