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Vascular Plants of California
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Delphinium luteum
GOLDEN 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
Unabridged Reference: Lewis & Epling 1954 Brittonia 8:1--22
Delphinium luteum A. Heller
NATIVE
Habit: Root generally > 15 cm, distally branched. Stem: 20--55 cm, base narrower than root, not firmly attached, +- glabrous. Leaf: generally +- basal, +- fleshy, generally +- glabrous; lobes generally > 6 mm wide. Inflorescence: generally branched; pedicels 8--68 mm, 8--50 mm apart, puberulent. Flower: sepals +- forward-pointing, bright yellow, lateral 11--16 mm, spur 13--20 mm; lower petals flattened, blades 3--4 mm, +- glabrous. Fruit: 11--14 mm, +- curved. Seed: smooth, collar inflated.
Ecology: Moist sites, cliffs, coastal grassland, chaparral; Elevation: < 50 m. Bioregional Distribution: n CCo (Marin, Sonoma cos.). Flowering Time: Mar--May
Unabridged Note: May hybridize with Delphinium decorum, Delphinium nudicaule.
Jepson eFlora Author: Jason A. Koontz & Michael J. Warnock
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

Previous taxon: Delphinium inopinum
Next taxon: Delphinium nudicaule

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Botanical illustration including Delphinium luteum

botanical illustration including Delphinium luteum

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Citation for this treatment: Jason A. Koontz & Michael J. Warnock 2012, Delphinium luteum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=22484, accessed on December 11, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 11, 2019.

Delphinium luteum
click for enlargement
© 2011 Vernon Smith
Delphinium luteum
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© 2018 Vernon Smith
Delphinium luteum
click for enlargement
© 2011 Vernon Smith
Delphinium luteum
click for enlargement
© 2011 Vernon Smith
Delphinium luteum
click for enlargement
© 2011 Vernon Smith
Delphinium luteum
click for enlargement
© 2015 Vernon Smith

More photos of Delphinium luteum in CalPhotos



Geographic subdivisions for Delphinium luteum:
n CCo (Marin, Sonoma cos.).
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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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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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.