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Delphinium nudicaule
RED or ORANGE LARKSPUR

Higher Taxonomy
Family: RanunculaceaeView DescriptionDichotomous Key

Common Name: BUTTERCUP FAMILY
Habit: Annual, perennial herb, woody vine [shrub], occasionally aquatic. Leaf: generally basal and cauline, alternate or opposite, simple or compound; petioles at base generally flat, occasionally sheathing or stipule-like. Inflorescence: cyme, raceme, panicle, or flowers 1. Flower: generally bisexual, generally radial; sepals 3--6(20), free, early-deciduous or withering in fruit, generally green; petals 0--many, generally free; stamens generally 5--many, staminodes generally 0; pistils 1--many, ovary superior, chamber 1, style 0--1, generally +- persistent as beak, ovules 1--many. Fruit: achene, follicle, berry, +- utricle in Trautvetteria, in aggregate or not, 1--many-seeded.
Genera In Family: +- 60 genera, 1700 species: worldwide, especially northern temperate, tropical mountains; many ornamental (Adonis, Aquilegia, Clematis, Consolida, Delphinium, Helleborus, Nigella). Toxicity: some highly TOXIC (Aconitum, Actaea, Delphinium, Ranunculus). Note: Taxa of Isopyrum in TJM (1993) moved to Enemion; Kumlienia moved to Ranunculus.
eFlora Treatment Author: Margriet Wetherwax & Dieter H. Wilken, family description, key to genera
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: DelphiniumView DescriptionDichotomous Key

Common Name: LARKSPUR
Habit: Perennial herb; root generally < 10 cm, +- fibrous or fleshy; rootstock buds in life generally obscure (0 or obscure on herbarium specimens). Stem: erect, generally 1, generally unbranched; base generally +- as wide as, generally firmly attached to root, generally +- red or purple. Leaf: simple, basal and cauline, petioled; blades generally palmately lobed, deep lobes generally 3--5, generally < 6 mm wide, generally also lobed; cauline proximal generally dry, generally 0 in flower, distal merging into bracts. Inflorescence: raceme or +- branched, terminal; flowers generally 10--25; pedicels generally +- spreading. Flower: bilateral; sepals 5, petal-like, generally spreading, generally +- dark blue, uppermost spurred; petals 4, << sepals, upper 2 with nectar-secreting spurs enclosed in uppermost sepal, lower 2 clawed, with blades (limbs) generally 4--8 mm, 2-lobed, generally +- perpendicular to claws, generally colored like sepals, generally obviously hairy especially on lobes proximally, inner and outer lobes of each blade generally equally hairy; pistils 3(5). Fruit: follicles 3(5), erect, length generally 2.5--4 × width. Seed: generally winged in youth, collar inflated at widest end or generally not, dark brown to black, generally appearing white; coat cell margins generally straight.
Species In Genus: +- 300 species: arctic, northern temperate, subtropics, tropical mountains worldwide; 3 commonly cultivated as ornamental in North America. Etymology: (Latin: dolphin, from bud shape) Toxicity: Most species highly TOXIC, attractive to, killing many cattle, fewer horses, sheep. Note: Hybrids common, especially in disturbed places. Root length is of coarse parts only.
eFlora Treatment Author: Jason A. Koontz & Michael J. Warnock

Delphinium nudicaule Torr. & A. Gray
NATIVE
Habit: Root generally > 15 cm, distally branched. Stem: 15--50(125) cm, base narrower than root, not firmly attached, generally glabrous. Leaf: generally on proximal 1/3 of stem, +- glabrous; lobes 3--10, generally > 6 mm wide. Inflorescence: pedicels 15--80 mm, 7--50 mm apart, glabrous to glandular-puberulent. Flower: sepals forward-pointing, scarlet to orange-red (dull yellow), lateral 8--16 mm, spur 12--34 mm; lower petals flattened, blades 2--3 mm, +- glabrous. Fruit: 13--26 mm, curved. Seed: smooth, collar inflated. Chromosomes: 2n=16.
Ecology: Moist talus, wooded, rocky slopes; Elevation: < 2600 m. Bioregional Distribution: NW, CaR, n&c SN, ScV, CW (exc SCoRI), nw MP; Distribution Outside California: to southwestern Oregon. Flowering Time: Mar--Jun Note: Generally hummingbird-pollinated.
Synonyms: Delphinium armeniacum A. Heller, illeg.
Unabridged Note: May hybridize with Delphinium andersonii, Delphinium antoninum, Delphinium decorum, Delphinium depauperatum, Delphinium luteum, Delphinium nuttallianum, Delphinium patens, Delphinium trolliifolium. Petals maroon to magenta in putative hybrids.
eFlora Treatment Author: Jason A. Koontz & Michael J. Warnock
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Citation for this treatment: Jason A. Koontz & Michael J. Warnock 2016. Delphinium nudicaule, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=22492, accessed on May 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 29, 2016.


Delphinium nudicaule
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© 2009 Gary A. Monroe
Delphinium nudicaule
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© 2009 Keir Morse
Delphinium nudicaule
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© 2002 Gary A. Monroe
Delphinium nudicaule
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© 2009 Julie Kierstead Nelson
Delphinium nudicaule
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© 2002 Gary A. Monroe
Delphinium nudicaule
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© 2010 George W. Hartwell

More photos of Delphinium nudicaule in CalPhotos


Geographic subdivisions for Delphinium nudicaule:
NW, CaR, n&c SN, ScV, CW (exc SCoRI), nw MP;
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.