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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
Reference: Morey 1962 Ph.D. Dissertation, Stanford Univ

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
Reference: Morey 1962 Ph.D. Dissertation, Stanford Univ
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botanical illustration including Plectritis macrocera


Citation for this treatment: Abigail J. Moore 2012, Plectritis macrocera, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on March 17, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on March 17, 2018.

Plectritis macrocera
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© 2009 Keir Morse
Plectritis macrocera
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© 2016 Keir Morse
Plectritis macrocera
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© 2007 Neal Kramer
Plectritis macrocera
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© 2010 Steve Matson
Plectritis macrocera
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© 2010 Steve Matson
Plectritis macrocera
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© 2012 Barry Rice

More photos of Plectritis macrocera in CalPhotos

Geographic subdivisions for Plectritis macrocera:
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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.