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A plant cell that differs noticeably in form from neighboring cells.

id′i·o·blas′tic adj.


(Biology) a plant cell that differs from those around it in the same tissue
ˌidioˈblastic adj


(ˈɪd i əˌblæst)

a plant cell that differs greatly from the surrounding cells or tissue.
id`i•o•blas′tic, adj.
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References in periodicals archive ?
Although the precise toxicity mechanism is unknown, calcium oxalate crystals (raphides) and protease in the idioblast of the plant are considered to be the causes.
A--Aligned colleters several in the stipules base; B--Three colleter aligned (C); D--Detail of stipular colleter (C); E--Dry Secretion (SE) in stipules (S); E--Stipule idioblast with raphides (R) on stipule; F--Raphides on stipule with (R).
Mature raphid and raphid idioblast structure in plants of the edible aroid genera Colocasia, Alocasia and Xanthosoma.
Cote GG (2009) Diversity and distribution of idioblasts producing oxalate crystals in Dieffenbachia seguine (Araceae).
Mesophyll (Figure 3E) consists of spongy and palisade parenchyma, and often contains druse idioblasts. As in the cotyledons, the midrib also has only one collateral vascular bundle.
Qualitatively evaluated were the following: (1) idioblasts; (2) epidermic cells; (3) cuticle; (4) form of the stomata; (5) arrangement of the stomata; (6) form of the guard cells; (7) subsidiary cells; (8) hypodennis; (9) trichomes; (10) mesophyll; (11) vascular and extravascular fibers; (12) vascular bundles; and (13) fungi.
In Plant kingdom, oxalate is a common photosynthetic byproduct (2) and many plants are known to synthesize calcium oxalate crystals which are stored in leaves and organ cells like idioblasts (3).