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Plectritis macrocera

Higher Taxonomy
Family: ValerianaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, occasionally strongly scented, odor generally unpleasant. Leaf: simple to pinnately lobed or compound; petioles generally sheathing; basal +- whorled; cauline opposite, petioled to sessile. Inflorescence: cyme, panicle, or head-like, generally +- dense. Flower: generally bisexual; calyx fused to ovary tip, limb 0 or lobes generally 5--15, coiled inward, plumose in age, pappus-like, spreading in fruit; corolla radial to 2-lipped, lobes generally 5, throat generally > lobes, > tube, base generally spurred or swollen, tube slender, long or short; stamens generally 1--3, fused to petals; ovary inferior, chamber generally 1, or occasionally 3 but 2 empty or vestigial. Fruit: achene, smooth, ribbed, or winged.
Genera In Family: +- 17 genera, 300 species: generally temperate, worldwide except Australia. Some species cultivated (Centranthus), some medicinal (Valeriana).
eFlora Treatment Author: Abigail J. Moore & Lauramay T. Dempster, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: PlectritisView DescriptionDichotomous Key

Habit: Annual, glabrous to subglabrous. Stem: generally erect, 5--80 cm, ×-section generally angled, branches 0--few. Leaf: simple, basal and cauline, opposite, generally entire; basal short-petioled, spoon-shaped; cauline generally sessile, oblong to ovate or obovate. Inflorescence: clustered, head-like or interrupted spike, terminal; bracts palmately divided into 3--5 linear segments. Flower: calyx 0; corolla 2-lipped to +- radial and funnel-shaped, white to dark pink, tube base generally spurred; stamens 3. Fruit: achene; body +- triangular, 2--4 mm, strongly winged or not, wings lateral, wide, +- glabrous to densely hairy.
Species In Genus: 5 species: western North America, southwestern South America. Etymology: (Greek: spur) Note: Self-fertile; large-flowered taxa cross- and self-pollinated, small flowered taxa self-pollinated only. Wing shape, color, hairiness vary in some species.
eFlora Treatment Author: Abigail J. Moore

Plectritis macrocera Torr. & A. Gray
Flower: corolla 2--3.5 mm, uniformly white to pale pink, +- radial; spur thick, blunt. Fruit: convex side with lengthwise groove down keel; white when immature; winged, wing glabrous to hairy, margin >= 2 × as thick as wing body when immature, 2--3.5 × as thick as wing body when mature, spreading, not rolled inwards. Chromosomes: 2n=32.
Ecology: Common. Open, partly shaded slopes; Elevation: < 2000 m. Bioregional Distribution: CA-FP, MP; Distribution Outside California: to British Columbia, Montana, Utah. Flowering Time: Mar--Jun
Synonyms: Plectritis eichleriana (Suksd.) A. Heller; Plectritis jepsonii (Suksd.) Burtt Davy; Plectritis macrocera var. collina (A. Heller) Dyal; Plectritis macrocera var. grayi (Suksd.) Dyal; Plectritis macrocera var. mamillata (Suksd.) Dyal
eFlora Treatment Author: Abigail J. Moore
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botanical illustration including Plectritis macrocera


Citation for this treatment: Abigail J. Moore 2016. Plectritis macrocera, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 01, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 01, 2016.

Plectritis macrocera
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© 2009 Keir Morse
Plectritis macrocera
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© 1981 Gary A. Monroe
Plectritis macrocera
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© 2009 Keir Morse
Plectritis macrocera
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© 2015 Barry Breckling
Plectritis macrocera
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© 2010 Barry Breckling
Plectritis macrocera
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© 2010 Steve Matson

More photos of Plectritis macrocera in CalPhotos

Geographic subdivisions for Plectritis macrocera:
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.
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.