Flora of North America species comparison

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Oxalis trilliifolia

great oxalis, great wood-sorrel, three leaf woodsorrel, trillium leaf oxalis, trillium-leaf wood-sorrel
Habit Herbs perennial, acaulous, rhizomes present, fleshy-thickened, densely scaly, stolons absent, bulbs absent.
Leaves

basal, clustered at rhizome tips;

petiole 15–30 cm;

leaflets 3, green, broadly obcordate, 20–40(–60) mm, lobed 1/6–1/4 length, lobes apically convex, surfaces sparsely villous, oxalate deposits absent.
Inflorescences

umbelliform cymes, 2–9(–15)-flowered;

scapes 15–25 cm, glabrous or sparsely villous.
Flowers

heterostylous;

sepal apices without tubercles;

petals white to pinkish, sometimes greenish proximally, without prominent veins, 8–14 mm.
Capsules

narrowly fusiform, 15–25(–30) mm, glabrous.

Oxalis trilliifolia
Phenology Flowering May–Sep.
Habitat Redwood, spruce-fir, Douglas fir, hemlock, hemlock-cedar, hemlock-alder woodlands, stream margins, swamps.
Elevation 20–1800 m. (100–5900 ft.)
Distribution
from FNA
CA; ID; OR; WA
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 12, p. 147.
Parent taxa Oxalidaceae > Oxalis
Sibling taxa
O. albicans, O. articulata, O. bowiei, O. brasiliensis, O. caerulea, O. californica, O. colorea, O. corniculata, O. debilis, O. decaphylla, O. dichondrifolia, O. dillenii, O. drummondii, O. florida, O. frutescens, O. grandis, O. hirta, O. hispidula, O. illinoensis, O. incarnata, O. intermedia, O. latifolia, O. laxa, O. macrantha, O. metcalfei, O. montana, O. oregana, O. pes-caprae, O. pilosa, O. purpurea, O. stricta, O. suksdorfii, O. texana, O. triangularis, O. violacea
Synonyms Hesperoxalis trilliifolia
Name authority Hooker: Fl. Bor.-Amer. 1: 118. (1831) — (as trilliifolium)
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).



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(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.)

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