Oxalis perennans Haw.

Species

Angiosperms > Oxalidales > Oxalidaceae > Oxalis

Characteristics

Perennial herb with stems erect or ascending or creeping at least partially above ground and rarely rooting at nodes, to 30 cm long, rarely rhizomatous, sparsely to densely antrorse-hairy, rarely glabrescent; taproot stout; bulb and bulbils absent. Indumentum of simple eglandular hairs. Stipules conspicuous, to c. 3 mm long, obtuse, rounded or occasionally truncate at apex, ciliate. Leaves cauline, palmately trifoliolate; petiole usually 1–4 cm long, with antrorse and often spreading hairs; leaflets sessile, cuneate-obcordate, 2–15 mm long and wide, green, bilobed (sinus to c. two-thirds leaflet length), glabrous to pubescent above, pubescent or hairs confined to midrib below, margins ciliate, lobes oblong to obovate, straight, divergent, apices rounded and 2–12 mm apart. Inflorescences axillary, flowers (1–) 2–3 (–6) per peduncle, held well above leaf level; peduncles 2–10 cm long, at least as long as leaves, glabrescent or antrorse-hairy; pedicels 5–18 mm long, much longer at fruiting, usually erect in fruit, sometimes deflexed (but capsules erect), glabrecent or with antrorse hairs. Bracts situated at base of pedicels, linear-subulate, 1–2 mm long, with appressed, antrorse hairs, calli absent. Sepals oblong, 3–5 mm long, often ciliate, calli absent. Petals obovate, sometimes notched, 6–12 mm long, yellow, glabrous. Stamens at 2 levels; filaments glabrous. Ovary hairy. Styles 1–2.5 mm long, densely hairy. Capsules cylindrical, 8–30 mm long, 1.5–2.5 mm diam., usually densely retrorse-hairy, the hairs simple, patent septate hairs absent. Seeds 1.5–2.2 mm long, transversely ribbed, ribs (8–)10–11, narrow, grooves wide, shallow to deep, uniformly coloured, ribs without greyish or whitish lines or blotches.
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Bushy perennial herb, with very stout primary root 3-7 mm wide towards apex. Stems to c. 20 cm long, numerous, slender, mostly erect and suberect, the outer prostrate, glabrate to densely clothed in ± antrorse hairs. Lvs 3-foliolate. Petioles to 5 cm long, glabrate to densely clothed in antrorse hairs; stipules c. 1.5 mm long, nearly completely adnate to petiole, ciliate. Lamina of leaflets equal, subsessile, 3-14 × 1-4 mm, deeply lobed with sinus c. ⅔ length, sometimes purplish, usually ± fishtail-shaped, glabrate or glabrous above, glabrate or with appressed hairs below, ciliate; calli 0. Fls 1-3; peduncles 2-8 cm long, glabrate or with antrorse hairs; pedicels 0.5-1.5 cm long, both much longer at fruiting, glabrate or with antrorse hairs. Bracts 1-2 mm long, linear-subulate, hairy, situated at base of pedicels; calli 0. Sepals 3-4 mm long, ovate-elliptic or elliptic-oblong, with appressed, antrorse hairs; calli 0. Petals > 6 mm long, ± obovate, yellow, glabrous. Stamens at 2 levels, glabrous; filaments united in lower 1/2, those of longer whorl c. 3 mm long. Styles > longer stamens, densely hairy. Capsule 10-20 mm long excluding styles, narrow-cylindric, often falcate but otherwise straight, ± densely clothed in short retrorse hairs. Seeds c. 1.5 mm long, oblong-ellipsoid; transverse ridges (8)-10-11, obtuse; grooves rather shallow.
A herb. It keeps growing from year to year. It can be creeping or curve upwards. It grows 10-20 cm high and spreads 30 cm wide. It has a stout taproot. The stems are slender and there are hairs which point forward. The stems can be 25 cm long. The leaves have 3 leaflets like a clover leaf. But they hang down like a pleated skirt. They are rounded or heart shaped. They are 0.4-1.5 cm long by 0.2-0.8 cm across. The flowers are in the axils of leaves. There are 1-5 flowers in a cluster. The flowers are yellow and 8 mm across. The fruit is a capsule 1-3 cm long by 0.15-0.25 cm wide. It is red and hairy and held above the leaves.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.3
Mature height (meter) 0.1 - 0.2
Root system creeping-root tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It grows in temperate and tropical places. It grows in dry locations. It grows in inland regions in Australia. Tasmania Herbarium.
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Widespread across a diverse range of natural habitats, including disturbed habitats.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-11

Usage

Uses -
Edible leaves roots tubers
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown from seed.
Mode seedlings
Germination duration (days) 14 - 60
Germination temperacture (C°) 12 - 20
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Oxalis perennans unspecified picture

Distribution

Oxalis perennans world distribution map, present in Australia and New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:375257-1
WFO ID wfo-0001255734
COL ID 6TGDG
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Oxalis cognata Oxalis perennans Oxalis preissiana Oxalis corniculata var. preissiana