raphide


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raphide

[′rāf‚īd]
(botany)
One of the long, needle-shaped crystals, usually consisting of calcium oxalate, occurring as a metabolic by-product in certain plant cells.
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References in periodicals archive ?
The clinical diagnosis was suspected calcium oxalate raphide poisoning.
Starch granules and raphides were identified on the surfaces of undecorated Lapita pottery sherds from the Kamgot site, New Ireland, c.
The identification is based on starch grain and xylem vessel morphology, and raphide concentration.
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 containing raphides along the leaf margin region are common (Fig.
Sefa-Dedeh S and SE Kofi-Agyir Starch structure and some properties of cocoyam (Xanthosoma sagittifolium and Colocasia esculenta) starch and raphides.
Each addresses a taphonomic issue with starch identification following cooking, movement of starch through sediments and the problems with the identification of raphides associated with plant use.
Bischoff describes the unique way in which the toxin in these plants works: "These plants contain pointy crystals called raphides in packets within the cells called idioblasts.