Oxalis triangularis A.St.-hil.

Species

Angiosperms > Oxalidales > Oxalidaceae > Oxalis

Characteristics

Herbs perennial, acaulous, rhizomes present, <branching, short, 1 cm diam., densely scaly>, stolons absent, bulblets sometimes present, clustered; bulb scales (1–)3-nerved, <margins glandular>. Leaves basal, <rarely absent at flowering>; petiole 12–20 cm; leaflets 3, dark purple, commonly with lighter violet splotches radiating from midvein adaxially, obtriangular to obovate-triangular, (20–)30–50(–60) mm, lobed 1/10 length or apex merely notched, <lobes apically truncate to slightly convex>, surfaces glabrous, oxalate deposits absent or in short, marginal lines on both sides of notch. Inflorescences umbelliform cymes, (1–)2–5(–9)-flowered; scapes 15–35 cm, glabrous. Flowers heterostylous; sepal apices with 2 orange tubercles; petals white to pinkish or pale purple, 15–22 mm. Capsules ovoid-ellipsoid, 12–18 mm, glabrous.
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A herb. It does not have a stem but has a branching, scaly rhizome. The leaves have 3 leaflets. They are triangle shaped. The leaves are deep purple. The leaf stalks can be 25 cm long. The flowers are white or pink and nodding. The fruit is spindle shaped and almost 2 cm long. There are 5-10 seeds.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 0.1 - 0.5
Mature height (meter) 0.15 - 0.2
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

A subtropical plant. It can grow in low light intensity. In Argentina it grows from sea level to 1,000 m above sea level. It suits hardiness zones 8-11.
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Amongst rocks by streams at elevations of about 600 metres around Rio de Janeiro.
Amongst rocks by streams at elevations of about 600 metres around Rio de Janeiro.
Light 5-7
Soil humidity 1-6
Soil texture 3-5
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 9-11

Usage

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

Cultivation

It can be grown by offsets.
Mode divisions seedlings
Germination duration (days) 14 - 60
Germination temperacture (C°) 12 - 20
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -5
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Oxalis triangularis habit picture by Trap Hers (cc-by-sa)

Leaf

Oxalis triangularis leaf picture by JP Corrêa Carvalho (cc-by-sa)
Oxalis triangularis leaf picture by Lolich Claudio (cc-by-sa)
Oxalis triangularis leaf picture by Maria Emanuely (cc-by-sa)

Flower

Oxalis triangularis flower picture by Machado Milena (cc-by-sa)
Oxalis triangularis flower picture by Trap Hers (cc-by-sa)
Oxalis triangularis flower picture by Lucila Esther Ortiz Velásquez (cc-by-sa)

Distribution

Oxalis triangularis world distribution map, present in Brazil

Identifiers

LSID urn:lsid:ipni.org:names:375478-1
WFO ID wfo-0001089468
COL ID 4BBM7
BDTFX ID -
INPN ID 446798
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Acetosella oxyptera Acetosella papilionacea Acetosella triangularis Oxalis truncata Acetosella regnellii Oxalis palustris Oxalis papilionacea Oxalis regnellii Oxalis triangularis f. glabrifolia Oxalis delta Oxalis oxyptera Oxalis venturiana Oxalis glaberrima Oxalis yapacaniensis Acetosella palustris Acetosella catharinensis Oxalis vernalis Oxalis tenuiscaposa Oxalis catharinensis Oxalis corumbaensis Oxalis triangularis subsp. papilionacea Oxalis triangularis subsp. triangularis Oxalis palustris var. major Oxalis regnellii var. catharinensis Oxalis triangularis var. lepida Acetosella yapacaniensis Oxalis triangularis