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Amsinckia retrorsa
RIGID FIDDLENECK

Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key

Common Name: BORAGE or WATERLEAF FAMILY
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

Common Name: FIDDLENECK
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

Amsinckia retrorsa Suksd.
NATIVE
Habit: Herbage +- gray, bristly, softer appressed- to reflexed-hairy below. Stem: erect, branches 0 (few above). Flower: calyx lobes 5, +- equal in width, not fused above base; corolla 5--8 mm, limb 1.5--3 mm diam, +- yellow, tube not exserted, 10-veined near base, limb generally unmarked; anthers generally appressed to stigma; style included. Fruit: 2--3 mm, +- dense-sharp-tubercled, ridged or not. Chromosomes: 2n=16,26.
Ecology: Shade-intolerant, disturbed, dry sites, roadsides; Elevation: < 1600(2250) m. Bioregional Distribution: CA (rare D); Distribution Outside California: to southeastern British Columbia, Idaho, Utah. Flowering Time: Feb--May Note: Homostylous.
Synonyms: Amsinckia helleri Brand, Amsinckia parviflora A. Heller
Unabridged Note: Occasionally hybridizes with Amsinckia menziesii var. intermedia. Amsinckia retrorsa is confused with the very distinctive and uncommon Amsinckia menziesii var. menziesii; generally occurring as solitary individuals to occasionally small colonies.
eFlora Treatment Author: Ronald B. Kelley & Fred R. Ganders
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Citation for this treatment: Ronald B. Kelley & Fred R. Ganders 2016. Amsinckia retrorsa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=13147, accessed on April 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 30, 2016.


Geographic subdivisions for Amsinckia retrorsa:
CA (rare D);
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.
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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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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.