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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.
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
Jepson eFlora Author: Abigail J. Moore
Reference: Morey 1962 Ph.D. Dissertation, Stanford Univ
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Plectritis congesta subsp. congesta
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Botanical illustration including Plectritis macrocera

botanical illustration including Plectritis macrocera

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Citation for this treatment: Abigail J. Moore 2012, Plectritis macrocera, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 22, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on April 22, 2024.

Plectritis macrocera
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©2010 Barry Breckling
Plectritis macrocera
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©2007 George W. Hartwell
Plectritis macrocera
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©2010 Barry Breckling
Plectritis macrocera
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©2010 Steve Matson
Plectritis macrocera
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©2009 Keir Morse

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Geographic subdivisions for Plectritis macrocera:
1. You can change the display of the base map layer control box in the upper right-hand corner.
2. County and Jepson Region polygons can be turned off and on using the check boxes.
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).


Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
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.

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 (fruiting time in some monocot genera).