Jepson Herbarium
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Vascular Plants of California
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Castilleja plagiotoma

MOJAVE PAINTBRUSH


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: +- 100 genera, 2060 species: worldwide, especially northern temperate and Africa. Note: High yield losses in many crops caused by Orobanche and Phelipanche species in Africa, Mediterranean, Middle East, and eastern Europe. Taxa of Orobanche in TJM2 treated here in Aphyllon and Phelipanche.
eFlora Treatment Author: Margriet Wetherwax, except as noted
Scientific Editor: Robert W. Patterson, Bruce G. Baldwin.
Genus: CastillejaView DescriptionDichotomous Key


Common Name: PAINTBRUSH, OWL'S-CLOVER
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.
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
Reference: Tank & Olmstead 2008 Amer J Bot 95:608--625
Unabridged Reference: Chuang & Heckard 1991 Syst Bot 16:644--666
Castilleja plagiotoma A. Gray
NATIVE
Habit: Perennial herb 30--60 cm, gray-green, becoming +- dark red, puberulent (especially leaves); hairs branched. Leaf: 20--50 mm, +- linear; lobes 3--5. Inflorescence: 3--20 cm; bracts 13--20 mm, white-woolly lobes 3--5, central lobe wide, truncate, green. Flower: calyx 12--18 mm, pale yellow, white-woolly, divided 1/4 abaxially, 1/8 adaxially, +- 1/2 on sides; corolla 12--20 mm, beak +- = tube, +- yellow, adaxially puberulent, margins pale, lower lip 1 mm, pale green; stigma barely exserted, head-like. Fruit: +- 10 mm. Seed: 1--1.5 mm; coat deeply netted, tight-fitting, most walls ladder-like.
Ecology: Dry sagebrush scrub, pinyon woodland; Elevation: 300--2500 m. Bioregional Distribution: s SN, Teh, SCoRI, TR, DMoj. Flowering Time: Apr--Jun
Jepson eFlora Author: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard
Reference: Tank & Olmstead 2008 Amer J Bot 95:608--625
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

Previous taxon: Castilleja pilosa
Next taxon: Castilleja praeterita

Botanical illustration including Castilleja plagiotomabotanical illustration including Castilleja plagiotoma


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Citation for this treatment: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard 2012, Castilleja plagiotoma, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=18283, accessed on December 03, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on December 03, 2024.

Castilleja plagiotoma
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©2011 Neal Kramer
Castilleja plagiotoma
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©2020 Keir Morse
Castilleja plagiotoma
click for image enlargement
©2020 Keir Morse
Castilleja plagiotoma
click for image enlargement
©2020 Keir Morse
Castilleja plagiotoma
click for image enlargement
©2020 Keir Morse

More photos of Castilleja plagiotoma
in CalPhotos



Geographic subdivisions for Castilleja plagiotoma:
s SN, Teh, SCoRI, TR, DMoj.
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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 occurrence).






 

Data provided by the participants of the  Consortium of California Herbaria.

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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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CCH collections by month Flowering-Fruiting Monthly Counts

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).