Oxalis

Oxalis is a huge genus of about 270 species within 6 subgenera of the family Oxalidaceae found in many parts of the world, but with a large number found in South Africa and South America. Oxalis was the subject of the PBS list topic of the week in November 2003. To read the introduction by Robin Attrill for this topic view this link. Another post with a lot of good background information on this subject was in this list post from David Victor. For the most recent comprehensive information about the names of the species see Clifton, 2004 in References. Some of the species do not fit the criteria for inclusion on the wiki and there is great variety in the ones that have storage organs (bulbs, tubers, rhizomes, tap roots) that can be included. All of the photos of the Oxalis storage organs we have pictured on the wiki are gathered on one wiki page for comparison.

The genus Oxalis has a reputation as a weed, and a few species really are weeds in parts of the world. But most are not. The late Michael Vassar, Curator of Floristic Gardens at the Huntington Botanical Garden, played a big role in popularizing Oxalis bulb culture by donating several South African collections to charity fund-raisers in the late 1990s. Many of his selections turned out to be relatively easy to grow, but not invasive in the garden. Download a list of his complete collection here.

Photos 1-2 below taken by Bill Dijk are a collection of Oxalis species painted by botanical artist Zoë Carter from Nelson, New Zealand. Bill has kindly added the names in the second photo. Photos 3-4 show flowers and leaves scanned by Ron Vanderhoff. To see more clearly the leaves identified with the species names click on the higher resolution file. These photos show the great number of flowers that can be in bloom at the same time in his collection and the great diversity of leaf types of this genus. Photo 5 by Nhu Nguyen shows a bouquet of various species.

Oxalis collection by Zoë Carter, Bill DijkOxalis collection by Zoë Carter, Bill DijkOxalis flowers, Ron VanderhoffOxalis leaves identified, Ron VanderhoffOxalis spp., Nhu Nguyen

More information about Oxalis is found on the websites listed below:
Andrew Broome's oxalis site from New Zealand (includes a link to the Oxalis Yahoo group)
Sylvia's site from Sweden has lots of photos of plants she grows in pots because of her climate
Growing Oxalis in California


See these wiki pages Miscellaneous Oxalis - Oxalis articulata - Oxalis flava - Oxalis hirta - Oxalis obtusa - Oxalis pes-caprae - Oxalis purpurea - Oxalis tuberosa - South African oxalis A-B - South African oxalis C -South African oxalis D-E - South African oxalis F-G - South African oxalis H-K - South African oxalis L-M - South African oxalis N-O - South African oxalis P - South African oxalis R-S - South African oxalis T-Z - South American oxalis or click on the name in the table below to learn about some of the species.


Oxalis species
Oxalis acetosella Oxalis adenodes Oxalis adenophylla Oxalis ambigua
Oxalis annae Oxalis anomala Oxalis argillacea Oxalis articulata
Oxalis asinina Oxalis attaquana Oxalis bifurca Oxalis bowiei
Oxalis brasiliensis Oxalis bulbocastanum Oxalis callosa Oxalis caprina
Oxalis cathara Oxalis clavifolia Oxalis commutata Oxalis comosa
Oxalis compressa Oxalis convexula Oxalis copiosa Oxalis corymbosa
Oxalis decaphylla Oxalis densa Oxalis dentata * Oxalis deppei
Oxalis depressa Oxalis dregei Oxalis engleriana Oxalis enneaphylla
Oxalis exserta Oxalis extensa Oxalis fabaefolia Oxalis flava
Oxalis flaviuscula Oxalis floribunda Oxalis fragrans Oxalis gigantea
Oxalis glabra Oxalis goniorhiza Oxalis gracilis Oxalis haedulipes
Oxalis helicoides Oxalis hernandezii Oxalis hirta Oxalis imbricata
Oxalis inaequalis Oxalis incarnata Oxalis inconspicua Oxalis 'Ione Hecker'
Oxalis kaajagdensis Oxalis kaasvogdensis Oxalis karooica Oxalis lasiandra
Oxalis latifolia Oxalis lawsonii Oxalis lichenoides Oxalis livida
Oxalis lobata Oxalis luteola Oxalis macrocarpa Oxalis magnifica
Oxalis massoniana Oxalis megalorrhiza Oxalis meisneri Oxalis melanosticta
Oxalis minuta Oxalis monophylla Oxalis morelosii Oxalis namaquana
Oxalis nelsonii Oxalis novemfoliata Oxalis obliquifolia Oxalis obtusa
Oxalis oregana Oxalis palmifrons Oxalis pardalis Oxalis perdicaria
Oxalis pes-caprae Oxalis pocockiae Oxalis polyphylla Oxalis potamophila
Oxalis primuloides Oxalis pulchella Oxalis purpurea Oxalis pusilla
Oxalis salteri Oxalis semiloba Oxalis smithiana Oxalis sonderiana
Oxalis sp. (Mexico) Oxalis sp. MV4674 Oxalis spp. (South African) Oxalis spp. (South America)
Oxalis stellata Oxalis stenorrhyncha Oxalis tenella Oxalis tenuifolia
Oxalis tetraphylla Oxalis tomentosa Oxalis tortuosa Oxalis triangularis
Oxalis tuberosa Oxalis uliginosa Oxalis 'Ute' Oxalis versicolor
Oxalis virginea Oxalis zeekoevleyensis

Miscellaneous Oxalis - Oxalis articulata - Oxalis flava - Oxalis hirta - Oxalis obtusa - Oxalis pes-caprae - Oxalis purpurea - Oxalis tuberosa - South African oxalis A-B - South African oxalis C -South African oxalis D-E - South African oxalis F-G - South African oxalis H-K - South African oxalis L-M - South African oxalis N-O - South African oxalis P - South African oxalis R-S - South African oxalis T-Z - South American oxalis


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Page last modified on November 20, 2014, at 09:37 AM