Datiscan.

Brit.

/dəˈtɪskə/, U.S.

/dəˈtɪskə/

Origin: A borrowing from Latin. Etymon: Latin Datisca.

Etymology: < scientific Latin Datisca ( Linnaeus Species Plantarum (1753) II. 1037) < post-classical Latin datisca, apparently denoting an unrelated plant, usually identified as a species of the genus Catananche (family Asteraceae ( Compositae)) (1549 or earlier, in Latin translations of Dioscorides), of uncertain origin (see note).Dioscorides gives datisca as one of the Latin names of the (different) plant; the corresponding Hellenistic Greek text has δατίσκα and also the variant reading δατίοκα. A derivation from an Iranian language has been suggested, but (although formally possible) this cannot be substantiated.

Botany.

A small genus of perennial plants of the family Datiscaceae, the members of which have alternate pinnate leaves and nitrogen-fixing capabilities. Also (in form datisca): any plant of or formerly included in this genus; esp. bastard hemp, D. cannabina, a yellow-flowered plant native from the eastern Mediterranean to the Himalayas, formerly used as a purgative and as the source of a yellow dye.

ΚΠ

1760 J. Lee Introd. Bot. 133 This Order contains four Genera, viz. Carica, Kiggellaria, Coriaria and Datisca.

1786 J. E. Smith tr. C. Linnaeus Diss. Sexes Plants 38 The cold nights of the year in which this experiment was made, destroyed these Datiscas, with many other plants, much earlier than usual.

1799 Med. & Physical Jrnl. 1 190 From the evacuating, diuretic, and alterative powers of the datisca, we may reasonably expect to derive considerable benefit.

1817 Q. Jrnl. Sci. & Arts Jan. 436 A solution in water of the extract of datisca, in which aluminated wool had been boiled, gave to the latter a very brilliant yellow colour.

1839 Ann. Nat. Hist. 2 297 Mr. Bennett incidentally observes that the supposed second species of Datisca, described by Linnaeus under the name of Datisca hirta, belongs unquestionably to the genus Rhus.

1874 M. M. Hartog tr. H. Baillon Nat. Hist. Plants III. 420 The Datiscas have well marked properties. D. cannabina is said to be a bitter, nauseous herb, laxative and emetic.

1902 C. L. Pollard Families Flowering Plants xxv. 187 The resemblance between Datisca and the hemp (Cannabis) is so striking that the former is frequently called ‘false hemp’.

2002 K. Pawlowski in G. J. Leigh Nitrogen Fixation Millennium vii. 176 No hemoglobin has been found in nodules of Datisca and Coriaria.

Compounds

† datisca yellow n. Obsolete a yellow dye produced from the bastard hemp, Datisca cannabina; cf. main sense.

ΚΠ

1854 R. D. Thomson Cycl. Chem. (at cited word) Datisca Yellow, the colouring matter of Datisca cannabina.

1890 T. E. Thorpe Dict. Appl. Chem. I. 646/2 The colouring matter, datisca yellow, is a pale yellow-brown translucent mass, soluble in water and giving a permanent yellow to cotton mordanted with alum.

This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	datisca
释义	Datiscan. Brit. /dəˈtɪskə/, U.S. /dəˈtɪskə/ Origin: A borrowing from Latin. Etymon: Latin Datisca. Etymology: < scientific Latin Datisca ( Linnaeus Species Plantarum (1753) II. 1037) < post-classical Latin datisca, apparently denoting an unrelated plant, usually identified as a species of the genus Catananche (family Asteraceae ( Compositae)) (1549 or earlier, in Latin translations of Dioscorides), of uncertain origin (see note).Dioscorides gives datisca as one of the Latin names of the (different) plant; the corresponding Hellenistic Greek text has δατίσκα and also the variant reading δατίοκα. A derivation from an Iranian language has been suggested, but (although formally possible) this cannot be substantiated. Botany. A small genus of perennial plants of the family Datiscaceae, the members of which have alternate pinnate leaves and nitrogen-fixing capabilities. Also (in form datisca): any plant of or formerly included in this genus; esp. bastard hemp, D. cannabina, a yellow-flowered plant native from the eastern Mediterranean to the Himalayas, formerly used as a purgative and as the source of a yellow dye. ΚΠ 1760 J. Lee Introd. Bot. 133 This Order contains four Genera, viz. Carica, Kiggellaria, Coriaria and Datisca. 1786 J. E. Smith tr. C. Linnaeus Diss. Sexes Plants 38 The cold nights of the year in which this experiment was made, destroyed these Datiscas, with many other plants, much earlier than usual. 1799 Med. & Physical Jrnl. 1 190 From the evacuating, diuretic, and alterative powers of the datisca, we may reasonably expect to derive considerable benefit. 1817 Q. Jrnl. Sci. & Arts Jan. 436 A solution in water of the extract of datisca, in which aluminated wool had been boiled, gave to the latter a very brilliant yellow colour. 1839 Ann. Nat. Hist. 2 297 Mr. Bennett incidentally observes that the supposed second species of Datisca, described by Linnaeus under the name of Datisca hirta, belongs unquestionably to the genus Rhus. 1874 M. M. Hartog tr. H. Baillon Nat. Hist. Plants III. 420 The Datiscas have well marked properties. D. cannabina is said to be a bitter, nauseous herb, laxative and emetic. 1902 C. L. Pollard Families Flowering Plants xxv. 187 The resemblance between Datisca and the hemp (Cannabis) is so striking that the former is frequently called ‘false hemp’. 2002 K. Pawlowski in G. J. Leigh Nitrogen Fixation Millennium vii. 176 No hemoglobin has been found in nodules of Datisca and Coriaria. Compounds † datisca yellow n. Obsolete a yellow dye produced from the bastard hemp, Datisca cannabina; cf. main sense. ΚΠ 1854 R. D. Thomson Cycl. Chem. (at cited word) Datisca Yellow, the colouring matter of Datisca cannabina. 1890 T. E. Thorpe Dict. Appl. Chem. I. 646/2 The colouring matter, datisca yellow, is a pale yellow-brown translucent mass, soluble in water and giving a permanent yellow to cotton mordanted with alum. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1760
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