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dwarf wood-sorrel

ten-leaf wood-sorrel

Habit Herbs annual, caulescent, sometimes densely cespitose, rhizomes and stolons absent, bulbs absent. Herbs perennial, acaulous, rhizomes and stolons absent, bulbs solitary or clustered; bulb scales 9–15+-nerved.
Aerial stems

1–5 from base, erect, 0.5–7 cm, usually herbaceous, sometimes becoming ± woody proximally, hirtellous to villous-hirtellous.

Leaves

cauline;

stipules rudimentary;

petiole 1.5–6 cm;

leaflets 3, green, obcordate, 5–12 mm, lobed 1/5 length, lobes apically convex, surfaces glabrous, oxalate deposits absent.

basal, rarely absent at flowering;

petiole 7–32(–46) cm;

leaflets (3–)5–11, green to purplish abaxially, green adaxially, sometimes with purplish transverse medial band, narrowly oblong-oblanceolate to narrowly oblong or linear, (10–)12–38(–72) mm, lobed (1/6–)1/2–2/3(–9/10) length, lobes apically subacute, surfaces glabrous, oxalate deposits absent.

Inflorescences

racemes, 6–14-flowered;

peduncles 3–15 cm.

umbelliform cymes, (2–)6–11(–15)-flowered;

scapes 7–35 cm, glabrous.

Flowers

heterostylous;

sepal apices without tubercles;

petals yellow, 6–12 mm.

distylous;

sepal apices with 2 orange, linear, thick tubercles;

petals green proximally, rose purple or lavender to pink, rarely white, distally, with green veins, (7–)9–17(–22) mm.

Capsules

ovoid to spheric, 3–5 mm, puberulent.

ellipsoid, 3–11 mm, glabrous.

2n

= 28, 56.

Oxalis laxa

Oxalis decaphylla

Phenology Flowering Apr–Jun. Flowering Jun–Aug.
Habitat Disturbed sites, riparian woodlands, riverbanks, gravelly beaches, rock crevices, foothill woodlands. Sycamore-walnut, oak, pine-oak, ponderosa pine, pine-spruce-aspen, or spruce-fir woodlands, canyons, meadows, seeps, streamsides.
Elevation 10–800 m. (0–2600 ft.) (1700–)2200–3000(–3200) m. ((5600–)7200–9800(–10500) ft.)
Distribution
from FNA
CA; South America (Chile) [Introduced in North America]
from FNA
AZ; NM; n Mexico; c Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Oxalis laxa is widespread in California in the eastern part of the Central Valley and along the central coast.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 12, p. 145. FNA vol. 12, p. 149.
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. 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
O. albicans, O. articulata, O. bowiei, O. brasiliensis, O. caerulea, O. californica, O. colorea, O. corniculata, O. debilis, 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 O. corniculata var. sericea, O. micrantha, O. radicosa, O. simulans O. grayi
Name authority Hooker & Arnott: Bot. Beechey Voy., 13. (1830) Kunth: in A. von Humboldt et al., Nov. Gen. Sp. 5(fol. & qto.): plate 468. (1822)
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