Jepson eFlora: Taxon page
Vascular Plants of California
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Dicentra uniflora
STEER'S HEAD


Higher Taxonomy
Family: PapaveraceaeView DescriptionDichotomous Key
Common Name: POPPY FAMILY
Habit: Annual to small tree; sap colorless, yellow, orange, red, or white. Leaf: basal, cauline, or both, simple and entire, toothed, or lobed, or 1--3-pinnate-dissected or compound; cauline generally alternate; stipules 0. Inflorescence: terminal, 1-flowered or cyme, raceme, or panicle; bracts generally present. Flower: bisexual, radial, bilateral, or biradial; sepals 2--3, shed after flower; petals generally 2 × sepals in number; stamens generally many; ovary 1, superior, chamber 1, style 0 or 1, stigmas or lobes 2--many, ovules few to many. Fruit: capsule, dehiscent by valves or pores, +- nut, or breaking transversely into 1-seeded, indehiscent units. Seed: fleshy appendage generally 0.
Genera In Family: 25--30 genera, 200 species: northern temperate, northern tropics; some cultivated (Papaver, Eschscholzia, Hunnemannia), source of opiates. Note: Stylomecon moved to Papaver. Corydalis, Dicentra, Fumaria in Fumariaceae in FNANM, elsewhere. Glaucium flavum Crantz is a waif. According to FNANM (3:300--301), Hunnemannia fumariifolia Sweet (+- like Eschscholzia except sepals free) an occasional waif in California, but documentation evidently lacking. Fleshy appendage of seed sometimes for dispersal by ants.
eFlora Treatment Author: Gary L. Hannan & Curtis Clark, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: DicentraView DescriptionDichotomous Key


Habit: Perennial herb, glabrous, glaucous or not; sap colorless. Leaf: basal, deeply dissected, segments often lobed. Inflorescence: raceme, panicle, or 1-flowered. Flower: biradial, nodding to erect; sepals 2, shed after flower; petals 4, white or cream to pale yellow to pink or pink-tipped, persistent or not, outer 2 free, lanceolate, alike, both pouched at base, inner 2 adherent at tips, oblanceolate, +- crested on back; stamens 6, +- fused in 2 sets opposite outer petals; ovary cylindric to long-conic, placentas 2, style 1, stigma lobes 2. Fruit: oblong, fusiform to ovate, or conic, dehiscent from tip. Seed: few, 1--2 mm, oblong to reniform, smooth to finely netted, black; fleshy appendage present.
Etymology: (Greek: twice spurred, from outer petals) Note: Other species in TJM (1993) moved to Ehrendorferia (Liden et al. 1997 Plant Syst Evol 206:411--420).
eFlora Treatment Author: Gary L. Hannan
Dicentra uniflora Kellogg
NATIVE
Habit: Plant 3--7 cm, tubered. Leaf: 1--3, 2--3-ternate-dissected, 4--7 cm. Inflorescence: 1-flowered. Flower: nodding to erect; petals 12--16 mm, white to pink or lavender, recurved tips of outer petals > 1/2 length petal; inner petals purple-tipped. Fruit: 9--14 mm, conic.
Ecology: Gravelly or rocky areas; Elevation: 1000--3300 m. Bioregional Distribution: KR, NCoRH, CaRH, SNH, MP; Distribution Outside California: to British Columbia, Montana, Wyoming, Utah. Flowering Time: May--Jul
Jepson eFlora Author: Gary L. Hannan
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Dicentra pauciflora
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Botanical illustration including Dicentra uniflora

botanical illustration including Dicentra uniflora

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Citation for this treatment: Gary L. Hannan 2012, Dicentra uniflora, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=22772, accessed on April 19, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 19, 2024.

Dicentra uniflora
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©2008 George W. Hartwell
Dicentra uniflora
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©2010 Barry Breckling
Dicentra uniflora
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©2009 Barry Breckling
Dicentra uniflora
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©2010 Keir Morse
Dicentra uniflora
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©2004 Steve Matson

More photos of Dicentra uniflora
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Geographic subdivisions for Dicentra uniflora:
KR, NCoRH, CaRH, SNH, MP
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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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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 (fruiting time in some monocot genera).