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Amsinckia tessellata var. tessellata

Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key

Habit: Annual to shrub or small tree, or non-green root parasite, often bristly or sharp-hairy. Stem: prostrate to erect. Leaf: basal and/or cauline, generally simple, generally alternate. Inflorescence: generally cymes, or panicle-, raceme-, head-, or spike-like, generally coiled in flower (often described as scorpioid), generally elongating in fruit, or flowers 1--2 per axil. Flower: bisexual, generally radial; sepals (4)5(10), fused at least at base, or free; corolla (4)5(10)-lobed, salverform, funnel-shaped, rotate, or bell-shaped, generally without scales at tube base, with 0 or 5 appendages at tube top, alternate stamens; stamens epipetalous; ovary generally superior, entire to 4-lobed, style 1(2), entire or 2-lobed or -branched. Fruit: valvate or circumscissile capsule or nutlets 1--4, free (fused), smooth to roughened, prickly or bristly or not.
Genera In Family: +- 120 genera, +- 2300 species: tropics, temperate, especially western North America, Mediterranean; some cultivated (Borago, Heliotropium, Echium, Myosotis, Nemophila, Phacelia, Symphytum, Wigandia). Toxicity: Many genera may be TOXIC from pyrrolizidine alkaloids or accumulated nitrates. Note: Recently treated to include Hydrophyllaceae, Lennoaceae. Wigandia urens added, as naturalized.
eFlora Treatment Author: Ronald B. Kelley, Robert Patterson, Richard R. Halse & Timothy C. Messick, family description, key to genera, treatment of genera by Ronald B. Kelley, except as noted
Scientific Editor: Ronald B. Kelley, Robert Patterson, Thomas J. Rosatti, Bruce G. Baldwin, David J. Keil.
Genus: AmsinckiaView DescriptionDichotomous Key

Habit: Annual; hairs generally bristly, often bulbous-based. Stem: generally erect, 2--12 dm, generally green. Leaf: basal and cauline, alternate, sessile or lower short-petioled, generally linear to narrow-lanceolate or -oblong, generally not succulent, +- entire. Inflorescence: spike-like cymes, generally +- terminal, tip coiled. Flower: generally radial; calyx lobes 5 or 2--4 (see key); corolla tube generally not constricted, generally orange or yellow (red-orange), appendages generally 0, throat generally open, glabrous, limb on large-flowered taxa generally with 5 dark spots. Fruit: nutlets erect, +- triangular, adaxially generally with exposed elliptic attachment scar, generally with rounded or sharp tubercles.
Species In Genus: 14 species: western North America, southwestern South America, widely alien elsewhere. Etymology: (W. Amsinck, patron of Hamburg Botanic Garden, 1752--1831) Note: Self-compatible; often heterostylous; large-flowered taxa generally cross-pollinated, small-flowered self-pollinated.
eFlora Treatment Author: Ronald B. Kelley & Fred R. Ganders
Species: Amsinckia tessellataView Description 

Flower: calyx lobes unequal in width, reduced to 2--4 from fusion below middle, notched at tip; corolla 8--16 mm, yellow or orange, tube 20-veined near base, limb 2--10 mm diam. Fruit: 2.5--4 mm, gray, dull, cobblestone-like or round-tubercled, ridged or not. Chromosomes: 2n=24.
Note: Homostylous.

Amsinckia tessellata A. Gray var. tessellata
Flower: calyx generally +- white hairy; corolla 8--12 mm, limb 2--6 mm diam, yellow; anthers appressed to stigma.
Ecology: Rocky or sandy soils; Elevation: 50--2280 m. Bioregional Distribution: s SNF, Teh, SnJV, SnFrB, SCoR, TR (n slope), GB, D; Distribution Outside California: to Washington, Idaho, Utah, Arizona, Baja California, South America. Flowering Time: Feb--Jun
Synonyms: Amsinckia tessellata var. elegans (Suksd.) Hoover
Unabridged Note: Abundant most years forming dense colonies in DMoj. The problematic occurrence of the distinctive Amsinckia tessellata var. elegans in the Carrizo Plain and western Antelope Valley (western DMoj) areas may represent a hybrid entity +- combining the traits of both listed varieties. S ee Hoover (1970), see Vascular Plants SLO Co. for description and alternative viewpoint.
eFlora Treatment Author: Ronald B. Kelley & Fred R. Ganders
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botanical illustration including Amsinckia tessellata var. tessellata


Citation for this treatment: Ronald B. Kelley & Fred R. Ganders 2017. Amsinckia tessellata var. tessellata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 22, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 22, 2017.

Amsinckia tessellata var. tessellata
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© 2010 Barry Breckling
Amsinckia tessellata var. tessellata
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© 2008 Keir Morse
Amsinckia tessellata var. tessellata
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© 2008 Steve Matson
Amsinckia tessellata var. tessellata
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© 2012 Neal Kramer
Amsinckia tessellata var. tessellata
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© 2012 Keir Morse
Amsinckia tessellata var. tessellata
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© 2009 Neal Kramer

More photos of Amsinckia tessellata var. tessellata in CalPhotos

Geographic subdivisions for Amsinckia tessellata var. tessellata:
s SNF, Teh, SnJV, SnFrB, SCoR, TR (n slope), GB, D;
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.
Blue line denotes eFlora flowering time.