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Vascular Plants of California
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Thalictrum sparsiflorum


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: ThalictrumView DescriptionDichotomous Key


Common Name: MEADOW-RUE
Habit: Perennial herb from caudex or rhizomes, generally glabrous; dioecious or flowers bisexual. Stem: 1--few, generally erect; branches 0 or few. Leaf: 1--4-ternate or pinnate, basal or basal and cauline, alternate, generally reduced distally on stem; leaflets wedge-shaped to +- round, entire, crenate, or lobed; pale green abaxially, generally green adaxially. Inflorescence: raceme or panicle, axillary or terminal, generally erect, +- scapose or not; bracts simple to 1-ternate; pedicels generally erect in fruit. Flower: sepals 4--5, +- green-white to +- purple, petal-like or not, generally early-deciduous; petals 0; stamens 8--many, generally > sepals, filaments flat or generally thread-like, anthers generally narrowly oblong, tip generally pointed; pistils (1)2--22. Fruit: achene, compressed laterally or not, ribbed or veined, beaked.
Species In Genus: 120--200 species: temperate North America, Eurasia, Africa; some ornamental, medicinal. Etymology: (Greek: name given by Dioscorides, Greek physician-botanist)
eFlora Treatment Author: Bruce D. Parfitt & Dieter H. Wilken
Reference: Park & Festerling 1997 FNANM 3:258--271
Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey.
NATIVE
Habit: Plant 60--180 cm. Leaf: basal and cauline, 4--30 cm; segments 12--20 mm, finely glandular-puberulent. Inflorescence: panicle, bracts generally leaf-like. Flower: bisexual; sepals generally 5, 2.5--4 mm; stamens 10--20, filaments flat, anthers ovoid, obtuse to mucronate. Fruit: 6--22, +- reflexed; body 4--6 mm, strongly compressed laterally, sides generally semicircular to crescent-shaped, ribs or veins 3--4(5), weakly defined, beak 1--1.5 mm, pedicel ascending. Chromosomes: 2n=42.
Ecology: Uncommon. Moist places, streambanks, conifer forest; Elevation: 1400--3500 m. Bioregional Distribution: CaR, n&c SN, SnBr, SnJt, SNE (Sweetwater, White mtns); Distribution Outside California: to Alaska, Colorado; Asia. Flowering Time: Jul--Aug
Jepson eFlora Author: Bruce D. Parfitt & Dieter H. Wilken
Reference: Park & Festerling 1997 FNANM 3:258--271
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Citation for this treatment: Bruce D. Parfitt & Dieter H. Wilken 2012, Thalictrum sparsiflorum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=46305, accessed on December 06, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 06, 2019.

Thalictrum sparsiflorum
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© 2009 Barry Breckling
Thalictrum sparsiflorum
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© 2010 Steve Matson
Thalictrum sparsiflorum
click for enlargement
© 2010 Steve Matson
Thalictrum sparsiflorum
click for enlargement
© 2010 Steve Matson
Thalictrum sparsiflorum
click for enlargement
© 2008 Steve Matson
Thalictrum sparsiflorum
click for enlargement
© 2010 Steve Matson

More photos of Thalictrum sparsiflorum in CalPhotos



Geographic subdivisions for Thalictrum sparsiflorum:
CaR, n&c SN, SnBr, SnJt, SNE (Sweetwater, White mtns)
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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.