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Hackelia micrantha

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: HackeliaView DescriptionDichotomous Key

Common Name: STICKSEED
Habit: Perennial herb (biennial); hairs appressed to spreading; caudex generally branched in age, often +- woody, taprooted. Stem: ascending or erect. Leaf: lowest petioles generally +- = blades, +- winged, others 0. Inflorescence: coiled cymes, generally > 3, generally terminal and axillary, +- bracted; pedicel in fruit elongated, recurved to reflexed. Flower: calyx deep-5-lobed; corolla rotate-salverform, generally white with yellow patch adaxially, lobes appendaged near base. Fruit: nutlets erect, > style, attachment scar lateral-medial, generally with barb-tipped prickles abaxially and on margin.
Species In Genus: 40 species: generally western North America, southeastern Asia. Etymology: (J. Hackel, Czech botanist, 1783--1869) Note: Values for corolla limb diam take into account shrinkage during flower period. Difficult, study needed, especially in northern California, southeastern Asia; sometimes merged with Lappula.
Unabridged Note: In North America filling old-world role of flat-flowered forget-me-nots, Myosotis, Lepechiniella, etc, for pollinators.
eFlora Treatment Author: Ronald B. Kelley & Robert L. Carr
Unabridged Reference: Gentry & Carr 1976 Mem New York Bot Gard 26:121--227

Hackelia micrantha (Eastw.) J.L. Gentry
Stem: generally many from +- stout, woody caudex, 3--11 dm; hairs generally 0 to +- sparse, at mid-stem generally +- spreading, generally > 1 mm. Leaf: basal 6--33 cm, 0.7--3.7 cm wide, narrow-elliptic to oblanceolate, +- green at flower; lower cauline generally 5--23 cm, 0.6--2.4 cm wide, hairs +- appressed, strigose to rough, generally < 1 mm, occasionally > 1 mm on margins; mid to upper cauline generally elliptic, base tapered to obtuse, not +- clasping. Inflorescence: +- wide, +- strigose; pedicel 5--12 mm in fruit. Flower: calyx 1.5--2.7 mm; corolla tube generally = calyx, throat open, limb (4)5--8(11) mm diam, blue, appendages wider than long. Fruit: nutlets 3--5 mm, abaxial prickles generally 4--10, < marginal. Chromosomes: 2n=24.
Ecology: Meadows, streambanks, shrubby slopes, open forest; Elevation: 1200--3500 m. Bioregional Distribution: KR, NCoRH, CaRH, SNH, MP, n SNE (Sweetwater Mtns); Distribution Outside California: western North America. Flowering Time: Jun--Aug
Synonyms: Hackelia jessicae (E.A. McGregor) Brand;
Unabridged Note: Most commonly collected Hackelia in California, in widespread, +- expansive populations. CA-FP plants tend to have smaller corollas than those farther northern and e, where other larger-flowered Hackelia species, such as Hackelia nervosa and Hackelia amethystina, are lacking; corolla size does not distinguish from Hackelia floribunda in SN.
eFlora Treatment Author: Ronald B. Kelley & Robert L. Carr
Unabridged Reference: Gentry & Carr 1976 Mem New York Bot Gard 26:121--227
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botanical illustration including Hackelia micrantha


Citation for this treatment: Ronald B. Kelley & Robert L. Carr 2012, Hackelia micrantha, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 15, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on October 15, 2018.

Hackelia micrantha
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© 2010 Keir Morse
Hackelia micrantha
click for enlargement
© 2010 Keir Morse
Hackelia micrantha
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© 2009 Keir Morse
Hackelia micrantha
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© 2010 Keir Morse
Hackelia micrantha
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© 1999 Gary A. Monroe
Hackelia micrantha
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© 2005 Christopher L. Christie

More photos of Hackelia micrantha in CalPhotos

Geographic subdivisions for Hackelia micrantha:
KR, NCoRH, CaRH, SNH, MP, n SNE (Sweetwater Mtns);
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).

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

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.