DOI: 10.5281/zenodo.15521719
title: Table 3 in Updating the taxonomy of polymorphic plant taxa: six Atlantic Forest species segregated from the widely circumscribed Oxalis polymorpha Mart. ex Zucc. (Oxalidales, Oxalidaceae)

description: Table 3 (continued on two next pages). Morphological comparison among species previously treated under O. polymorpha Mart. ex Zucc. and the new species that are described here (*).
Characters / taxaO. amorimii *O. animarum *O. decipiensO. idimae *O. itatingae *O. polymorphaO. tijucanaYoung stem (indumentum)Moderate, curved hairsAbundant to very abundant, curved hairsAbundant to very abundant, curved hairsGlabrescent, with occasional to sparse, curved to appressed hairsGlabrescent, with sparse to moderate, curved to appressed hairsAbundant to very abundant, curved or patent hairsGlabrescent, with sparse, appressed hairsLeaf arrangementAlong the stem, mostly grouped at stem apexAlong the stemAlong the stem, mostly grouped at stem apexAlong the stem, densely grouped at stem apex,sometimes forming multiple pseudo-whorlsDensely grouped at stem apex, appearing arranged in a terminal pseudo-whorlAlong the stem, mostly grouped at stem apex, sometimes almost forming one or more pseudo-whorlsDensely grouped at stem apex, appearing arranged in a terminal pseudo-whorlPetiole (adaxial surface)CanaliculateCanaliculateCanaliculateSlightly canaliculateCanaliculate or only slightly flattenedCanaliculateCanaliculatePetiole (indumentum)Moderate to abundant, curved to straight hairsAbundant to very abundant, short, patent to curved hairsModerate to abundant, patent to curved hairsOccasional, appressed hairs, more densely in the proximal regionAdaxially with abundant, curved hairs, abaxially with occasional to sparse hairsModerate to abundant, patent to curved hairsAdaxially with abundant, curved hairs along the margin, abaxially glabrous or with occasional hairsTerminal leaflet shapeOvate to lanceolate or slightly rhombicOvate to lanceolateOvate to lanceolateOvate to lanceolateLanceolate to almost narrowly trullateOvate to lanceolateNarrowly elliptic to lanceolateTerminal leaflet baseCuneate to attenuateCuneate to attenuateCuneate to obtuseObtuseCuneate to obtuseAttenuate to roundedCuneate to attenuateLateral leaflets degree of asymmetry (see Fig. 2A)Subsymmetric to asymmetricSubsymmetric to asymmetricSubsymmetric to asymmetricSubsymmetric to asymmetricAsymmetric to strongly asymmetricSubsymmetric to strongly asymmetricAsymmetric to strongly asymmetricLeaflet blades adaxial surface (indumentum)Glabrescent, with appressed hairs along midribGlabrescent, with curved hairs along midribGlabrousGlabrousGlabrousModerate to abundant, appressed hairs, glabrescentGlabrousLeaflet blades abaxial surface (indumentum)Abundant, appressed hairs, mostly along midribModerate, patent to appressed hairs, mostly along midrib, mixed with shorter, thicker, appressed hairsAbundant, appressed hairsGlabrousAbundant, appressed hairs along the midribModerate to abundant, appressed hairsGlabrous or with occasional hairs along the midribLeaflet margin (indumentum)CiliateCiliateCiliateProximally with occasional hairsCiliateCiliate (similar to rest of abaxial surface)Ciliate, with sparse hairs usually hiding under the marginMidrib(adaxially / abaxially)Impressed to canaliculate/ raisedImpressed / raisedCanaliculate / raisedImpressed/ impressed to slightly raisedImpressed to slightly canaliculate / impressed to slightly raised proximallyImpressed to slightly canaliculate / raisedCanaliculate / raisedSecondary veins (number of pairs)One suprabal + 3–4 distal4–77–125–85–75–118–12Inflorescence positionAxillaryAxillaryAxillary and cauliflorousCauliflorousAxillaryAxillaryAxillaryInflorescence dichasial branches (branched or not)Not branchedNot branchedUsually branched at baseNot branchedNot branchedNot branched or densely branched after the sterile, proximal partNot branchedPedicel length3–7 mm3–4.5 mm1.5–3.5 mm3–6 mm5–7 mm2.5–5 mm4.5–7 mmPedicel indumentumModerate, ascending to curved hairsAbundant, short, patent hairs, mixed with sparse to moderate, longer glandular hairsAbundant, short, appressed to curved hairsModerate to abundant, appressed hairsAbundant, short, patent to slightly retrorse hairs, sometimes distally mixed with antrorse, longer hairsAbundant, appressed to curved, antrorse hairsSparse to moderate, curved to appressed, antrorse hairsCorolla colorYellowYellowYellowWhiteYellowWhite to pinkishYellowLonger stamens (appendiculate or not?)Non-appendiculateAppendiculateNon-appendiculate (sometimes with an inconspicuous bulge)Non-appendiculateNon-appendiculateNon-appendiculateNon-appendiculateGynophoreCa 0.2 mm longCa 0.7 mm long0.3–0.5 mm longCa 0.2 mm longCa 1 mm longCa 0.5 mm long1.2–1.5 mm longFruit shape (length / width)UnknownPyriform (ca 4.5/4.5 mm)Pyriform (ca 5.5/5.5 mm)Broadly ovoidObloid (ca 4/5.5 mm)Very broadly ovoid to broadly depressed ovoid (ca 3.3–4.5 mm)Obloid to broadly depressed ovoid or pyriform (ca 6 × 5.5 mm)Fruit (carpel prolongation)–Ca 1 mm longCa 2 mm longNot prolonged or up to ca 0.5 mm longCa 1 mm longUp to ca 0.5 mm long1.5–2 mm longFruit (indumentum)–Moderate, glandular, and patent intermixed hairsGlabrousGlabrousGlabrousGlabrous or distally with occasional, patent hairsGlabrousGeographic distribution (domain)Bahia (Atlantic Forest)Bahia (Atlantic Forest)Rio de Janeiro to Minas Gerais (Atlantic Forest)Northern Rio de Janeiro (Atlantic Forest)Rio de Janeiro (Atlantic Forest)Bahia (Caatinga / Atlantic Forest)Rio de Janeiro (Atlantic Forest)HabitatSemideciduous forestSemideciduous forestSemideciduous / rainforestSemideciduous forestRainforestDeciduous / semideciduous /ainforestRainforest
description: Published as part of Fiaschi, Pedro, Cabral, Fernando Santos, Caballero, Leonardo Ronald Gaspar & Lima, Duane Fernandes, 2025, Updating the taxonomy of polymorphic plant taxa: six Atlantic Forest species segregated from the widely circumscribed Oxalis polymorpha Mart. ex Zucc. (Oxalidales, Oxalidaceae), pp. 176-178 in European Journal of Taxonomy 989 on page 176, DOI: 10.5852/ejt.2025.989.2891, http://zenodo.org/record/15497926