Accession Data

Oxalis triangularis

Family: Oxalidaceae

Country of Origin: Brazil

Description: Plants exhibit nyctinastic movements (day/night movements) in which the leaflets fold up at night and are open during the day. These movements have been variously attributed to A) reduce surface area exposed to cool night air and reduce heat loss, B) reduction of amount of moonlight absorbed thus preventing false photoperiodic responses or C) to allow light during the morning and late afternoon (red/far red shift) to reach otherwise shaded leaf axils where the red/far red shift induces flower initiation.

Regardless of the explanation, these movements are a fascinating aspect of these plants.

Accession Data

USDA Zone: 6b-11

Accession #: 198502638

Accession Date: 1985-12-31 00:00:00

Bloom Status: 🌸 Flowering

Location: 1319

Quantity: 3

Source: Unknown

Culture: The plants are kept in many botanical gardens and easy to rear. The vegetative propagation from rhizom bulbs is the easiest. Put a bulb in a broad flower pot containing peath rich soil and keep well watered. The light intensity should not be too high. In case of diseases it helps to cut off all leaves. The plants start soon to develop new leaves.

Classification

Division: Magnoliophyta

Class: Magnoliopsida

Subclass: eurosid I

Order: Oxalidales

Family: Oxalidaceae

Flowering Data:

This accession has been observed in bloom on:
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005

References

  1. The Plant List (2013). Version 1.1. Accessed 2 June 2015.

Images

Oxalis triangularis