Jepson eFlora: Taxon page
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Castilleja linariifolia

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: CastillejaView DescriptionDichotomous Key

Habit: Annual to subshrub, green. Leaf: sessile, entire to dissected. Inflorescence: spike-like; bracts becoming shorter, wider, more lobed than leaves, mature tips generally cream to red or green. Flower: calyx unequally 4-lobed, colored like bract tips; corolla upper 2 lip lobes fused, beak-like, tip open, lower lip reduced, 3-toothed to -pouched; stamens 4, anther sacs 2, unequal; stigma entire to 2-lobed, generally exserted. Fruit: +- asymmetric. Seed: generally +- brown, attached at base; coat netted, net-like walls ladder-like or not.
Species In Genus: +- 200 species: especially western North America. Etymology: (Domingo Castillejo, Spanish botanist, 1744--1793) Note: Hybridization and polyploidy common. Biologically consistent taxa difficult to define. Castilleja chrymactis Pennell not in California, sole (1947) record a misidentified, incomplete specimen.
eFlora Treatment Author: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard

Castilleja linariifolia Benth.
Habit: Perennial herb 30--100 cm, few-branched, +- yellow to gray-green, generally becoming +- purple, glabrous to slightly puberulent. Leaf: 20--80 mm, linear, margins folded upward; lobes 0--3, narrow, < calyx. Inflorescence: 5--20 cm, open below; bracts 15--30 mm, generally narrowly 3-lobed, < calyx, bright red to yellow. Flower: calyx 20--35 mm, divided 2/3 abaxially, +- 1/3 adaxially, +- 1/8 on sides, puberulent, lobes curved upward, acute; corolla 25--45 mm, beak +- = tube, yellow-green, adaxially sparsely puberulent, margins red, lower lip 2--3 mm, dark green; stigma slightly 2-lobed. Fruit: 10--15 mm. Seed: 1.5--2 mm; coat shallowly netted, loose-fitting, side walls ladder-like. Chromosomes: 2n=24,48.
Ecology: Dry plains, rocky slopes, sagebrush scrub or pinyon/juniper woodland; Elevation: 1000--3350 m. Bioregional Distribution: CaR, e slope SNH, TR, GB, DMoj; Distribution Outside California: to Oregon, Montana, New Mexico. Flowering Time: Jun--Sep
eFlora Treatment Author: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard
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botanical illustration including Castilleja linariifolia


Citation for this treatment: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard 2017. Castilleja linariifolia, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 25, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on September 25, 2017.

Castilleja linariifolia
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© 2010 Steve Matson
Castilleja linariifolia
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© 2008 Gary A. Monroe
Castilleja linariifolia
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© 2012 Barry Breckling
Castilleja linariifolia
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© 2008 Thomas Stoughton
Castilleja linariifolia
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© 2012 Gary A. Monroe
Castilleja linariifolia
click for enlargement
© 2012 Gary A. Monroe

More photos of Castilleja linariifolia in CalPhotos

Geographic subdivisions for Castilleja linariifolia:
CaR, e slope SNH, TR, GB, DMoj;
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.
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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.