Contains 8 accepted taxa overall.
Characteristics
Classification
Citation
OXALIS Linnaeus, Sp. Pl. 433. 1753.
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TYPE: Oxalis acetosella Linnaeus Lectotypified by Small, in Britton, N. Amer. Fl. 25: 25. 1907.
Species
| Scientific Name | Common Name | Status | Photos |
|---|---|---|---|
| Oxalis articulata | WINDOWBOX WOODSORREL | Not Native | |
| Oxalis corniculata | COMMON YELLOW WOODSORREL; CREEPING WOODSORREL | Native UPL (NWPL) | |
| Oxalis debilis | PINK WOODSORREL | Not Native | |
| Oxalis hispidula | BRISTLY WOODSORREL | Not Native | |
| Oxalis intermedia | BROADLEAF WOODSORREL | Not Native | |
| Oxalis macrantha | TUFTED YELLOW WOODSORREL | Native | |
| Oxalis triangularis | PURPLE SHAMROCK | Not Native | |
| Oxalis violacea | VIOLET WOODSORREL | Not Native |
[Family identification key]
1. Plants caulescent, stoloniferous; sepals without orange-brown callosities; petals yellow
2
1. Plants acaulescent, with a bulb, rhizome, or taproot; sepals typically with orange-brown callosities; petals white to pink to purple
3
2. Petals yellow, 5-11 mm long
2. Petals golden yellow, 12-18 mm long
3. Leaflets obdeltoid
4
3. Leaflets obcordate
5
4. Plant with a scaly bulb or bulblets; petals 8-12 mm long; fruit 3-8 mm long
4. Plant with a scaly rhizome; petals 15-22 mm long; fruit 12-18 mm long
5. Plant with a segmented rhizome, scaly when young; leaf blades pilose on the upper surface; sepals moderately to densely pilose
5. Plant with a scaly bulb or bulblets; leaf blades glabrous on the upper surface; sepals glabrous to pubescent only at the tip
6
6. Leaflets without orange-brown callosities; inflorescence with 1-3 flowers
6. Leaflets with orange-brown callosities, at least on the margins or at the sinus; inflorescence usually with 2-14 flowers
7
7. Leaflets 2.5-4.5 cm long, with orange-brown callosities along the margins and sometimes elsewhere; inflorescence usually with 3-14 flowers
7. Leaflets 0.8-1.5 cm long, with orange-brown callosities only at the sinus; inflorescence usually with 2-8 flowers