Jepson eFlora: Taxon page
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Orthocarpus imbricatus

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: OrthocarpusView DescriptionDichotomous Key

Habit: Annual, green. Leaf: alternate, sessile, entire to 3-lobed. Inflorescence: spike; bracts generally distinct from leaves, 1 per flower, entire to 5-lobed, tips generally colored. Flower: calyx unequally 4-lobed, deepest sinus adaxial; corolla club-shaped, upper lip folded lengthwise, tip rounded, closed, opening directed downward forming a hood enclosing anthers and style, lower lip shorter, +- 3-pouched, (0)3-toothed; stamens 4, anther sacs 2, unequal; style, stigma slender. Fruit: generally +- notched. Seed: generally 8--15, often +- curved, +- keeled, attached at side; coat netted or ridged, tight-fitting.
Species In Genus: 9 species: western North America. Etymology: (Greek: straight fruit) Note: Close to Cordylanthus; other species formerly placed here are Castilleja (owl's-clovers) or Triphysaria (Johnny-tuck).
eFlora Treatment Author: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard

Orthocarpus imbricatus S. Watson
Habit: Plant 10--35 cm, +- puberulent. Stem: simple or branched distally. Leaf: 20--50 mm, entire, +- lanceolate. Inflorescence: 2--8 cm; bracts differing abruptly from distal leaves, 10--15 mm, strongly net-veined, with 2 small, lateral lobes from near base, central lobe widely oblong, 5--10 mm wide, +- rose on distal 1/3. Flower: calyx 5--7 mm, hairy, divided 3/4 abaxially and adaxially, 1/4 on sides; corolla 10--15 mm, nearly hidden by bract, +- rose, beak +- 4 mm, +- 0.5 mm > lower lip, with conspicuous, cylindric, hooked tip, cylindric, lower lip moderately pouched, +- yellow, teeth 0.5 mm, triangular, densely puberulent; stigma well included. Fruit: +- 5 mm. Seed: 3--5, dark brown. Chromosomes: 2n=28.
Ecology: Mtn meadows, grassy or rocky slopes; Elevation: 1600--2400 m. Bioregional Distribution: KR, NCoRO, CaR; Distribution Outside California: to British Columbia. Flowering Time: Jun--Aug
eFlora Treatment Author: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard
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botanical illustration including Orthocarpus imbricatus


Citation for this treatment: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard 2016. Orthocarpus imbricatus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on October 28, 2016.

Orthocarpus imbricatus
click for enlargement
© 2014 Neal Kramer
Orthocarpus imbricatus
click for enlargement
© 2014 Neal Kramer

More photos of Orthocarpus imbricatus in CalPhotos

Geographic subdivisions for Orthocarpus imbricatus:
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.