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Tiarella trifoliata
LACE FLOWER

Higher Taxonomy
Family: SaxifragaceaeView DescriptionDichotomous Key

Common Name: SAXIFRAGE FAMILY
Habit: Perennial herb from caudex or rhizome, generally +- hairy. Stem: often +- leafy on proximal 1/2, rarely trailing and leafy throughout. Leaf: generally simple, basal and/or cauline, generally alternate, generally petioled; veins +- palmate. Inflorescence: raceme or panicle, generally +- scapose. Flower: generally bisexual, generally radial; hypanthium free to +- fused to ovary; calyx lobes generally 5; petals generally 5, free, generally clawed, generally white; stamens 3, [4], 5, 8, or 10; pistils 1 (carpels +- fused, ovary lobed, chambers 1 or 2, placentas generally 2(3), axile or parietal or occasionally proximally axile and distally marginal in ovary lobes) or 2 (carpels free, placentas marginal), ovary nearly superior to inferior, occasionally more superior in fruit, styles generally 2(3). Fruit: capsule (generally 2(3)-beaked, valves generally 2(3), generally equal) or 2 follicles. Seed: generally many, small.
Genera In Family: +- 30 genera, 600 species: especially northern temperate, arctic, alpine; some cultivated (Bergenia, Darmera, Heuchera, Saxifraga, Tellima, Tolmiea). Note: California Mitella moved to Mitellastra, Ozomelis, Pectiantia; Suksdorfia ranunculifolia to Hemieva. Parnassia moved to Parnassiaceae.
eFlora Treatment Author: Michael S. Park & Patrick E. Elvander, except as noted
Scientific Editor: Bruce G. Baldwin.
Genus: TiarellaView Description 

Common Name: SUGAR-SCOOP
Habit: Plant hairy, glands few; rhizome scaly; bulblets 0. Leaf: simple or compound, basal and cauline, distal reduced; stipules minute on cauline leaves, membranous, with marginal bristles; blade ovate, base cordate, lobes 3--5, +- deep, or leaflets 3, teeth sharp. Inflorescence: generally raceme-like panicle. Flower: hypanthium minute, free of ovary; petals thread-like; stamens 10; pistil 1, ovary superior, chamber 1, placentas 2, parietal. Fruit: capsule, valves unequal.
Species In Genus: 2 species: North America, Asia. Etymology: (Greek: small tiara)

Tiarella trifoliata L.
NATIVE
Habit: Plant 15--40 cm. Leaf: stipules on basal leaves < 1 cm, on cauline leaves < 1 mm; petiole > blade. Inflorescence: glandular hairs dense. Flower: calyx lobes 1.5--2.5 mm; petals 3--4 mm.

eFlora Treatment Author: Michael S. Park & Patrick E. Elvander
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Key to Tiarella trifoliata

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Next taxon: Tiarella trifoliata var. trifoliata

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Citation for this treatment: Michael S. Park & Patrick E. Elvander 2016. Tiarella trifoliata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=46560, accessed on December 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 05, 2016.


Tiarella trifoliata var. unifoliata
click for enlargement
© 2016 Steve Matson
Tiarella trifoliata var. unifoliata
click for enlargement
© 2016 Steve Matson
Tiarella trifoliata var. unifoliata
click for enlargement
© 2016 Steve Matson
Tiarella trifoliata var. unifoliata
click for enlargement
© 2016 Steve Matson
Tiarella trifoliata var. trifoliata
click for enlargement
© 2014 Barry Rice
Tiarella trifoliata var. unifoliata
click for enlargement
© 2016 Steve Matson

More photos of Tiarella trifoliata in CalPhotos


Geographic subdivisions for Tiarella trifoliata:
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.