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Castilleja exserta subsp. exserta

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
Species: Castilleja exsertaView Description 

Habit: Annual 10--45 cm, glandular-puberulent, stiff-hairy. Leaf: 10--50 mm; lobes 5--9, +- thread-like. Inflorescence: 2--20 cm, 2--4 cm wide; bracts 10--25 mm, white to purple-red, lobes 5--9 (lowest pair often again 2--4-lobed), +- linear, tips wider. Flower: calyx 10--22 mm, divided 1/2 abaxially, 2/3 adaxially, 1/3 on sides, colored like bracts; corolla 12--30 mm, beak 6--7 mm, densely shaggy-hairy, tip hooked, lower lip 4--6 mm, pouches 3--8 mm wide, 3--4 mm deep; filaments puberulent; stigma +- included. Fruit: 10--15 mm. Seed: 1--2 mm; coat deeply netted, loose-fitting.
Note: Highly variable; hybridizes with Castilleja attenuata, Castilleja densiflora, Castilleja lineariloba.

Castilleja exserta (A. Heller) T.I. Chuang & Heckard subsp. exserta
Inflorescence: distal bracts generally < 5 mm wide, lobes > 2 mm, tipped white, pale yellow, or rose to +- purple. Flower: corolla colored like bracts. Chromosomes: 2n=24.
Ecology: Open fields, grassland; Elevation: < 1600 m. Bioregional Distribution: NW, SNF, GV, CW, SW, w DMoj; Distribution Outside California: Arizona. Flowering Time: Mar--May
Synonyms: Orthocarpus purpurascens Benth.; Orthocarpus purpurascens var. pallidus D.D. Keck
eFlora Treatment Author: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard
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botanical illustration including Castilleja exserta subsp. exserta


Citation for this treatment: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard 2017. Castilleja exserta subsp. exserta, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 22, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on February 22, 2017.

Castilleja exserta subsp. exserta
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© 2010 Barry Breckling
Castilleja exserta subsp. exserta
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© 2009 Thomas Stoughton
Castilleja exserta subsp. exserta
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© 1996 Christopher L. Christie
Castilleja exserta subsp. exserta
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© 2015 Barry Rice
Castilleja exserta subsp. exserta
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© 2009 Barry Rice
Castilleja exserta subsp. exserta
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© 2006 George W. Hartwell

More photos of Castilleja exserta subsp. exserta in CalPhotos

Geographic subdivisions for Castilleja exserta subsp. exserta:
NW, SNF, GV, CW, SW, w 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).

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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.