. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . freien Vereinigung, bayer. Vertr. der angew. : Saffron adulteration. Pharm. Jour. Transact. , R.: Ueber die vermeintlichen Oxalatkristalle im Safran. Ztschr. allgera. osterr. : Eigentiimliche Kristalle auf den Safrannarben. Ztschr. Unters. Genussm. 1903, 6, : Falschung von Safran. Ann. Pharm. 1895. HARIGOLD FLOWERS. The tasteless and odorless ray-flowers of the marigold {Calendulaofficinalis L., order Compo
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . freien Vereinigung, bayer. Vertr. der angew. : Saffron adulteration. Pharm. Jour. Transact. , R.: Ueber die vermeintlichen Oxalatkristalle im Safran. Ztschr. allgera. osterr. : Eigentiimliche Kristalle auf den Safrannarben. Ztschr. Unters. Genussm. 1903, 6, : Falschung von Safran. Ann. Pharm. 1895. HARIGOLD FLOWERS. The tasteless and odorless ray-flowers of the marigold {Calendulaofficinalis L., order Compositce), often artificially colored, serve as anadulterant of saffron. The ovary is small, spindle-shaped; the strap-shaped corolla, orange-colored, 4-veined, 3-toothed, upward of 25 , contracted into a channeled hairy base. »\V. Brandes. * A. Meyer. ^ Gehe. ^Jandous. ° Kanoldt. 628 SP/CES y4ND CONDIMENTS. HISTOLOGY. Corolla. The thin blades may be mounted directly in (Fig. 552). The cells are elongated, finely striate, arrangedend to end in rows. Each contains one or more drops of fatty oil, in. Fig. 552. Marigold (Calendula ofjiciualis). Surface view of petal showing ep epidermiswith h hairs and p jiarcnchyma with oil globules. Xi6o. (Moellek.) which is dissolved a yellow dye. The numerous hairs (//) on the channeledbase are over i mm. long, and usually consist of two parallel rows of cells,the end cells being often deep yellow and shrunken. DIAGNOSIS. Although the dried product somewhat resembles safTron, on soakingin water the difference in microsco])ic structure is striking. The strap-shaped, 4-vcincd, 3-toothed corolki narrowid into a channeled hairybase is characteristic. In the ground product the long hairs (Fig. 552, //),made up usually of two rows of cells, are readily identified. Waterextracts only a trace of color from the uncolored flowers. S/IFFLOIVER. 629 SAFFLOWER. The o]angc-red flowers of Carthamus tinctorius L. (order CompositcB),known
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