Flora of North America species comparison

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Oxalis suksdorfii

Oxalis caerulea

Suksdorf woodsorrel, Suksdorf's oxalis, Suksdorf's wood-sorrel, western yellow oxalis, western yellow wood-sorrel

blue wood-sorrel
Habit Herbs perennial, caulescent, rhizomes present long, stolons absent, bulbs absent. Herbs perennial, acaulous, rhizomes and stolons absent, bulb solitary; bulb scales (3–)5–7-nerved.
Aerial stems

1(–3) from base, mostly erect, 10–25 cm, herbaceous, sparsely to moderately villous, hairs nonseptate and usually septate.

Leaves

cauline;

stipules rudimentary;

petiole (2–)3–5(–6) cm, hairs septate and nonseptate;

leaflets 3, green, obcordate, (8–)10–16(–20) mm, lobed 1/5–1/3 length, margins green, surfaces glabrous to sparsely strigose, oxalate deposits absent.

basal;

petiole 3–10(–13) cm;

leaflets (3–)4(–5), green to purplish abaxially, green adaxially, obtriangular to obcordate, 5–22 mm, lobed 1/5–1/2 length, lobes apically rounded, surfaces glabrous, oxalate deposits absent or as few punctate tubercles near lobe apices.
Inflorescences

umbelliform cymes, 1–3-flowered;

peduncles (2–)4–8(–10) cm.

umbelliform cymes, (1–)2–7-flowered;

scapes 6–12(–15) cm, glabrous.
Flowers

tristylous, above level of leaves;

sepal apices without tubercles;

petals yellow, 12–20 mm.

distylous;

sepal apices with 2 orange, linear tubercles;

petals red to pinkish lavender, 8–10 mm.
Capsules

oblong-cylindric, 10–15 mm, densely puberulent.

ellipsoid, 3.5–6 mm, glabrous.
2n

= 24.

Oxalis suksdorfii

Oxalis caerulea
Phenology Flowering May–Aug. Flowering Jun–Sep.
Habitat Open woods, fir, Douglas fir-oak woodlands, dry shrublands, roadsides, disturbed areas. Streambeds, stream banks, meadows, pinyon-juniper, pine-oak-juniper, or pine-aspen woodlands.
Elevation 0–700 m. (0–2300 ft.) (1800–)2000–2600 m. ((5900–)6600–8500 ft.)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CO; NM; Mexico (Chihuahua, Durango, Sonora)
[BONAP county map]
Source FNA vol. 12, p. 145. FNA vol. 12, p. 148.
Parent taxa Oxalidaceae > Oxalis 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. texana, O. triangularis, O. trilliifolia, O. violacea
O. albicans, O. articulata, O. bowiei, O. brasiliensis, 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. trilliifolia, O. violacea
Synonyms Xanthoxalis suksdorfii Ionoxalis caerulea
Name authority Trelease: Mem. Boston Soc. Nat. Hist. 4: 89. (1888) (Small) R. Knuth: Notizbl. Bot. Gart. Berlin-Dahlem 7: 316. (1919)
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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