raphide


Also found in: Dictionary, Encyclopedia, Wikipedia.

raphide

(rā′fīd) also

raphis

(-fĭs)
n. pl. raphides (răf′ĭ-dēz′) or raphises
One of a bundle of needlelike crystals of calcium oxalate occurring in many plant cells.

raphide

a calcium oxalate crystal present in bundles in some plant cells.

raphide

needle-like microscopic crystals of calcium oxalate found in plants (Dieffenbachia, Philodendron, Zantedescgia, Colocasia, Alocasia spp.); reputedly capable of causing painful laceration of the tongue.
References in periodicals archive ?
As found in the tribe Spathicarpeae and in the subfamily Lemnoideae, articulated tubes (Ta) are encountered where the idioblastic raphide cells are in contact and may attach end to end.
Systematic significance of cell inclusions in Haemodoraceae and allied families: silica bodies and tapetal raphides.
Idioblasts with raphides in the storage parenchyma and chlorenchyma.
The precise assignation of Epilobium species was based on tri-chome and raphides morphology (Krajsek et al.
Crystalline inclusions in leaf tissue: (0) absent; (1) sandy; (2) druses; (3) raphides, as well as other forms; (4) framboids.
Raphides are long needle-shaped rods of calcium oxalate and were sometimes found in conjunction with other plant residues (Fahn 1982; Pearsall 2000).