–
Key
to Oxalis (Oxalidaceae) [Iberian Peninsula]
–
Key
to Oxalis, Sect. Ionoxalis [Iberian Peninsula]
–
Similar
taxa [commonly mistaken for above (Ionoxalis)]
–
Taxa
of other sections confused with the taxa of this section (Ionoxalis)
Key
to Oxalis, Sect. Ionoxalis [Iberian Peninsula]
1.
Leaves with 4 leaflets (rarely 3 on juvenile plants). Leaflets ± obtriangular (±
equal in length and width) and often showing a purple band on upper surface
(about
proximal half).
Cultivated....................................... Oxalis
tetraphylla
[Type]
--
Leaves with 3 leaflets. Leaflets obcordate, obdeltoid or
fishtail-shaped (± equal in length and width or more frequently wider than
long) and rarely showing a purple band on upper surface (only O. vallicola).
Weeds....................................... 2.
2.
Bulb scales with 3 nerves
(exceptionally with 5 nerves) in ripe bulbs; bulblets sessile. Leaflets ±
broadly obcordate and with oxalate deposits on the submarginal lowerside and
sometimes in the rest of the lamina too. Inflorescence is a simple or compound
umbelliform cyme; bracts and bracteoles usually with oxalate deposits.......................................
Oxalis debilis
[hb.
Sánchez Pedraja 09528, bulb]
--
Bulb scales with 3 or more nerves in ripe bulbs; bulblets on ± long
rhizomes or sessile; Leaflets ± broadly
obcordate to obdeltoid and without oxalate deposits or rarely 1-2 at sinus). Inflorescence is always a simple umbelliform cyme; bracts and bracteols
without oxalate deposits....................................... 3.
3.
Bulb up to
2.8(3.2) cm; bulblets
sessile. Leaflets ± broadly obcordate to obdeltoid, with rounded lobes,
without oxalate deposits and often showing a purple band on upper surface (about
distal half). Homostylous flower (semi-homostylous) with white or very pale pink petals and hairy styles.......................................
Oxalis
vallicola
--
Bulb up to
1.5(2) cm; bulblets
on ± long rhizomes.
Leaflets ±
broadly obdeltoid
to fishtail-shaped, with ± subacute lobes, without oxalate
deposits or only 1-2 at sinus and without a purple band. Tristylous flower
(short-styled flower –exceptionally long-styled flower–)
with ± deep pink petals and glabrous styles (hairy
styles in long-styled flower).......................................
Oxalis
latifolia
[Type]
[hb.
Sánchez Pedraja 12603,
flower]
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Similar
taxa [commonly mistaken for above (Ionoxalis)].
A.
Leaflets 3,
± broadly obcordate to obdeltoid, with rounded lobes,
without oxalate deposits and often showing a purple band on upper surface (about
distal
half). Bracts without oxalate deposits. Homostylous flower (semi-homostylous) with white or very pale pink petals and hairy styles..............................
Oxalis
vallicola
--
Leaflets
3,
± broadly obdeltoid, with rounded lobes,
without oxalate deposits and without a purple band.
Bracts without oxalate deposits. Tristylous flower
(short-styled flower)
with ± pale pink petals and glabrous styles..............................
Oxalis
latifolia "from Corwall"
sensu Young
(1958)
--
Leaflets
3, ± obtriangular,
with obtuse lobes and showing a purple band on upper surface
(about
proximal half). Bracts with oxalate deposits. Tristylous flower
(short-styled flower)
with pink petals and glabrous styles..............................
Oxalis tetraphylla aff.
(O. bulbifera
auct. nonn. brit.; O. drummondii auct. nonn. brit.)
B. Bulb scales with 5-9(11) nerves in ripe bulbs;
bulblets usually formed,
abundant and sessile.
Homostylous flower (semi-homostylous); petals c. (8)9-13(14) mm, white or very pale pink.......................................
Oxalis
vallicola
--
Bulb scales with 3 nerves in ripe
bulbs; bulblets seldom formed and scarce. Distylous flower; petals c. (7)10-20(24)
mm, ± pink ....................................... Oxalis
jacquiniana Kunth [www.tropicos.org,
accessed Apr 2008]
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Taxa
of other sections confused with the taxa of this section (Ionoxalis).
A.
Plant
with non-glandular hairs. Bulbous plant (scaly bulbs). Leaflets 17-43(52) ×
15-64(75) mm, glabrous or ± sparsely hairy and with or without orange oxalate
deposits (calli). Pedicel glabrous or ± sparsely hairy. Sepal glabrous or
with a few hairs and with 1-2 oxalate deposits (calli) at the tip. Petals 9-18 mm,
glabrous or subglabrous..............................
Oxalis
sect. Ionoxalis
[Iberian Peninsula]
--
Plant
with glandular hairs. Bulbous plant (tunicate bulbs). Leaflets 24.2-80 ×
25-83 mm, ± glabrous on upper surface but with glandular hairs on lower
surface (on nerves and towards the margin) and without oxalate deposits (calli).
Pedicel with glandular hairs.
Sepal with glandular hairs
and without oxalate deposits (calli). Petals
16-24(30) mm, glabrous..............................
Oxalis bowiei
[sect.
Caprinae] [(O.
bowiei in Ecology
& Evolutionary Biology Greenhouses,
accessed 16 May 2008); (O.
bowiei in Aluka,
accessed 16 May 2008); (O.
bowiei (sub O.
articulata) in
Herbari
Virtual del Mediterrani Occidental,
accessed 16 May 2008)]
--
Plant
with non-glandular hairs. Rhizomatose plant [± thick, scaly —old leaf bases—, blackish-brown, woody branching or non-branching
rhizome]. Leaflets 12,5-41 × 18-55 mm, ± densely appressed-pubescent on
both sides and with ± abundant orange oxalate deposits (calli). Pedicel ± densely appressed-pubescent.
Sepal ± densely appressed-pubescent and with 1-2 oxalate deposits (calli)
at the tip. Petals (7)12-19 mm, with white hairy
bands outside and with some oxalate deposits..............................
Oxalis
articulata [sect. Articulatae] (O.
articulata in
National
Herbarium of New South Wales-PlantNET,
accessed May 2008)]
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