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Amsinckia retrorsa
RIGID FIDDLENECK


Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key
Common Name: BORAGE FAMILY
Habit: Annual, perennial herb, or shrub, often bristly or sharp-hairy. Stem: prostrate-decumbent to erect. Leaf: basal and/or cauline, simple, generally alternate, sometimes opposite, especially at base. Inflorescence: cymes, arranged singly or in groups of 2--5, generally coiled in flower, generally elongating in fruit. Flower: bisexual, generally radial; sepals 5, free or fused at least at base; corolla 5-lobed, salverform, funnel-shaped, rotate, or bell-shaped, appendages (often called "fornices") 0 or 5 at top of tube, when present often differentially pigmented, alternate stamens; stamens epipetalous; ovary superior, 4-lobed, style 1, entire or minutely 2-lobed (2-branched). Fruit: nutlets 1--4, when > 1, all similar (often called "homomorphic") or 1 or 2 dissimilar in size and/or shape from the others (often called "heteromorphic"), free (fused), smooth to roughened, prickly or bristly or not.
Genera In Family: +- 90 genera, +- 1600--1700 species: mostly temperate, especially western North America, Mediterranean; some cultivated (Borago, Echium, Myosotis, Symphytum). Toxicity: Many genera may be TOXIC from pyrrolizidine alkaloids or accumulated nitrates. Note: Sometimes still treated in broader sense of TJM2 (e.g., APG IV 2016 Bot J Linn Soc 181:1--20), but recent evidence (Luebert et al. 2016) supports segregation, for our flora, of the families Ehretiaceae, Heliotropiaceae, Hydrophyllaceae, Lennoaceae, and Namaceae.
eFlora Treatment Author: Michael G. Simpson, C. Matt Guilliams, Kristen Hasenstab-Lehman & Ronald B. Kelley
Scientific Editor: Bruce G. Baldwin, C. Matt Guilliams, Kristen Hasenstab-Lehman, David J. Keil, Ronald B. Kelley, Robert W. Patterson, Thomas J. Rosatti & Michael G. Simpson
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
Unabridged Reference: Ray & Chisaki 1957 Amer J Bot 44:529--554; Suksdorf 1931 Werdenda 1:47--113; Kelley & Seiber 1992 Phytochemistry 31:2369--2387
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 intermedia. Amsinckia retrorsa is confused with the very distinctive and uncommon Amsinckia menziesii; generally occurring as solitary individuals to occasionally small colonies.
Jepson eFlora Author: Ronald B. Kelley & Fred R. Ganders
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Ronald B. Kelley & Fred R. Ganders 2012, Amsinckia retrorsa, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=13147, accessed on May 27, 2022.

Citation for the whole project: Jepson Flora Project (eds.) 2022, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on May 27, 2022.

Amsinckia retrorsa
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© 2017 Keir Morse
Amsinckia retrorsa
click for enlargement
© 2017 Keir Morse
Amsinckia retrorsa
click for enlargement
© 2017 Keir Morse
Amsinckia retrorsa
click for enlargement
© 2017 Keir Morse
Amsinckia retrorsa
click for enlargement
© 2017 Keir Morse
Amsinckia retrorsa
click for enlargement
© 2017 Keir Morse

More photos of Amsinckia retrorsa in CalPhotos



Geographic subdivisions for Amsinckia retrorsa:
CA (rare D)
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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).





 

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 (fruiting time in some monocot genera).