idioblast


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idioblast

[′īd·ē·ō‚blast]
(botany)
A plant cell that differs markedly in shape or function from neighboring cells within the same tissue.
(geology)
A mineral constituent of a metamorphic rock formed by recrystallization which is bounded by its own crystal faces.
References in periodicals archive ?
The parenchyma presented very abundant crystalliferous idioblasts, containing calcium-oxalate microcrystals.
Idioblasts bearing calcium oxalate crystals (druses and crystal sand) were found in the leaf mesophyll (especially in the spongy parenchyma), midrib and petiole (cortical and medullary parenchyma) (Figure 4F).
goyazana from other species of the genus based on the stomata; mesophyll; sclerenchyma sheaths shared by mid-vein vascular bundles; the occurrence of idioblasts and raphides; and the presence of starch and tannin in the leaf blade.
The water-storing tissues in this species involve the adaxial and abaxial hypodermis, as well as the acuiferous idioblasts located in the spongy parenchyma.
The ovarian mesophyll is constituted by around four or five layers of parenchymatous cells of several dimensions and shapes, some slightly elongated towards the radial direction, and interwoven by large secretory idioblasts adjacent to outer epidermis.
At this developmental stage, some differentiating oil idioblasts are seen (Figure 1a, b, e).