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. 2015 Aug 24;116(3):333–358. doi: 10.1093/aob/mcv106

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© The Author 2015. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com

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Fig. 13. — Location of crystals according to the lignification state of the parenchyma cells. (A) Transverse section of Bignonia magnifica. Acicular crystals are present in non-lignified axial and ray parenchyma cells. (B) Transverse section of Pleonotoma tetraquetra. Prismatic crystals are present in the non-lignified ray cells. (C) Transverse section of Adenocalymma divaricatum. Prismatic crystals are present in lignified ray cells. (D) Ancestral character state reconstruction of the presence and place of occurrence of the crystals. Scale bars (A–C) = 50 µm.