Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Tiarella trifoliata

cut-leaf foamflower (var. laciniata), foamflower, lace flower, one-leaf foamflower (var. unifoliata), sugar-scoop, three-leaf foam-flower, three-leaf foamflower (var. trifoliata)
Flowering stems

10–70 cm

Tiarella trifoliata
Distribution
from FNA
AK; CA; ID; MT; OR; WA; AB; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

Varieties of Tiarella trifoliata have overlapping ranges and differ from each other in leaf form and marginal dissection. Their floral features are stable throughout. They were previously suspected of hybridizing when sympatric. They are differentiated along elevational gradients and often remain distinct in sympatric populations.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Basal leaves usually simple; cauline leaves rarely trifoliolate, shallowly to deeply lobed, leaflets sessile.
var. unifoliata
1. Basal leaves 3-foliolate; cauline leaves 3-foliolate; leaflets deeply lobed, petiolulate
→ 2
2. Leaflet lobes to 1/2 length of leaflet, distal segments not laciniate.
var. trifoliata
2. Leaflet lobes more than 1/2 length of leaflet, distal segments laciniate.
var. laciniata
Source FNA vol. 8, p. 115.
Parent taxa Saxifragaceae > Tiarella
Sibling taxa
T. cordifolia
Subordinate taxa
T. trifoliata var. laciniata, T. trifoliata var. trifoliata, T. trifoliata var. unifoliata
Name authority Linnaeus: Sp. Pl. 1: 406. 1753 ,
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers