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Gutierrezia californica
CALIFORNIA MATCHWEED

Higher Taxonomy
Family: Asteraceae (Compositae)View DescriptionDichotomous Key

Common Name: SUNFLOWER FAMILY
Habit: Annual to tree. Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. Inflorescence: 1° inflorescence a head, resembling a flower, of several types (see below), 1--many in generally +- cyme-like cluster; each head generally with +- calyx-like involucre of 1--many series of phyllaries (involucre bracts); receptacle of head flat to conic or columnar, paleate (bearing paleae = receptacle bracts) or epaleate; flowers 1--many per head. Flower: bisexual, unisexual, or sterile, +- small, of several types (see below); calyx 0 or modified into +- persistent pappus of bristles, scales, and/or awns; corolla radial or bilateral (0), lobes generally (0)3--5; stamens 4--5, filaments generally free, generally fused to corolla at tube/throat junction, anthers generally fused into cylinder around style, anther base generally rounded or cordate (deeply sagittate or with tail-like appendages), tip (= flattened appendage) generally projecting beyond pollen sac; pistil 1, 2-carpeled, ovary inferior, 1-chambered, 1-seeded, placenta basal, style 1, tip generally +- 2-branched (except in some staminate disk flowers), branch tips truncate or generally bearing +- brush-like appendages; stigmas 2, generally on adaxial faces of style branches. Fruit: achene (also called a cypsela) (drupe in Chrysanthemoides), cylindric to ovoid, sometimes compressed, generally deciduous with pappus attached.
Genera In Family: +- 1500 genera, 23000 species: worldwide, many habitats. Note: Flower and head types differ in form and sexual condition. A disk flower has a generally radial corolla, with a cylindric tube, expanded throat, and generally 5 lobes. Disk flowers are generally bisexual and fertile but occasionally staminate with reduced ovaries. Discoid heads comprise only disk flowers. A radiant head is a variant of a discoid head, with peripheral disk flower corollas expanded, often bilateral. A ray flower corolla is bilateral, generally with a slender tube and flattened petal-like ray (single lip composed of generally 3 lobes). Ray flowers are generally pistillate or sterile (occasionally lacking styles). Radiate heads have peripheral ray flowers and central disk flowers. Disciform heads superficially resemble discoid heads, with pistillate or sterile flowers that lack rays, together with or separate from disk flowers. A ligulate flower is bisexual, with a bilateral, generally ephemeral corolla and 5-lobed ligule. Liguliflorous heads comprise only ligulate flowers. See glossary p. 31 for illustrations of family characteristics. Echinops sphaerocephalus L., Gaillardia aristata Pursh, Gaillardia pulchella Foug., Hymenothrix loomisii S.F. Blake, Tagetes erecta L., Thelesperma megapotamicum (Spreng.) Kuntze are waifs. Melampodium perfoliatum Kunth, historic urban waif. Ageratum conyzoides L., Guizotia abyssinica (L. f.) Cass., Santolina chamaecyparisus L., orth. var. are rare or uncommon escapes from cultivation. Dyssodia papposa, Ismelia carinata (Schousb.) Sch. Bip. [Chrysanthemum carinatum Schousb.], Mantisalca salmantica (L.) Briq. & Cavill. are historical or extirpated waifs in California. Inula helenium L. not documented in California. Taxa of Aster in TJM (1993) treated here in Almutaster, Eucephalus, Eurybia, Ionactis, Oreostemma, Sericocarpus, Symphyotrichum; Chamomilla in Matricaria; Cnicus in Centaurea; Conyza in Erigeron and Laennecia; Dugaldia in Hymenoxys; Erechtites in Senecio; Hymenoclea in Ambrosia; Lembertia in Monolopia; Osteospermum ecklonis in Dimorphotheca; Picris echioides in Helminthotheca; Prionopsis in Grindelia; Raillardiopsis in Anisocarpus and Carlquistia; Schkuhria multiflora in Bahia; Trimorpha in Erigeron; Venidium in Arctotis; Whitneya in Arnica. Taxa of Arida in TJM2 (2012) treated here in Leucosyris.
Unabridged Note: Largest family of vascular plants in California and of eudicots globally.
eFlora Treatment Author: David J. Keil, except as noted
Scientific Editor: David J. Keil, Bruce G. Baldwin.
Genus: GutierreziaView DescriptionDichotomous Key

Common Name: SNAKEWEED, MATCHWEED
Habit: Subshrub (in California), <= 1.5 m, appearing glabrous. Stem: 1--many from base, erect or ascending, branched distally, +- striate, gummy-resinous, minutely scabrous, yellow to tan or gray; older bark generally fibrous. Leaf: alternate, sometimes in axillary clusters, entire, gland-dotted, gummy-resinous, glabrous or minutely scabrous, dark gray-green. Inflorescence: heads radiate, generally many in +- open cyme-like clusters, 1 or in short-peduncled clusters at tips of inflorescence branches; involucre +- cylindric or narrowly to widely obconic; phyllaries graduated in 3--4 series, straw-colored, tips green; receptacle flat to conic, epaleate, minutely hairy. Ray Flower: 1--13; corolla yellow, ray often inconspicuous. Disk Flower: 1--13 (in California), bisexual or staminate; corolla yellow, club- or narrowly funnel-shaped, lobes short, recurved; style appendages lanceolate. Fruit: narrowly obconic, 5--8-veined, light tan, with +- white appressed hairs; pappus of 1--2 series of finely toothed, white or +- yellow scales generally 1/2 fruit length (in California) or much reduced.
Species In Genus: 28 species: western North America, South America. Etymology: (Gutiérrez, surname of a noble Spanish family) Toxicity: TOXIC to livestock, fresh or dried in hay.
eFlora Treatment Author: David J. Keil & Meredith A. Lane

Gutierrezia californica (DC.) Torr. & A. Gray
NATIVE
Habit: Plant 2--10 dm. Stem: sprawling to erect, sometimes +- red. Leaf: +- linear. Inflorescence: heads 8--20-flowered, generally 1 (or in groups of 2--3) at 2° inflorescence tips; peduncle generally > 1.5 mm; involucre generally +- bell-shaped, sometimes obconic, generally <= 6.5 mm, < 3.5 mm diam; phyllaries generally 9--21 in 3 series. Ray Flower: 4--13; corolla 2.5--7.2 mm. Disk Flower: 4--13, bisexual; corolla 2.3--4.2 mm. Fruit: 1--2.8 mm. Chromosomes: 2n=16,24.
Ecology: Grassland, arid woodland and shrubland, sometimes on serpentine; Elevation: < 1600 m. Bioregional Distribution: NCoRI, SnJV, CW, SCo, WTR, SnGb, PR; Distribution Outside California: northwestern Baja California. Flowering Time: Jul--Nov Note: Variable in involucre shape, arrangement of heads. Intergrades with Gutierrezia sarothrae in central and southern SCo, Baja California.
Synonyms: Gutierrezia bracteata Abrams
eFlora Treatment Author: David J. Keil & Meredith A. Lane
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Citation for this treatment: David J. Keil & Meredith A. Lane 2016. Gutierrezia californica, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=3140, accessed on December 09, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 09, 2016.


Gutierrezia californica
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© 2009 Barry Breckling
Gutierrezia californica
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© 2014 Keir Morse
Gutierrezia californica
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© 2010 Neal Kramer
Gutierrezia californica
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© 2008 Keir Morse
Gutierrezia californica
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© 2014 Keir Morse
Gutierrezia californica
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© 2008 Keir Morse

More photos of Gutierrezia californica in CalPhotos


Geographic subdivisions for Gutierrezia californica:
NCoRI, SnJV, CW, SCo, WTR, SnGb, PR;
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.
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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 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.