Volume 4

An arrangement of British plants; according to the latest improvements of the Linnaean system. To which is prefixed, An easy introduction to the study of botany. Illustrated by copper plates / by William Withering, M.D. F.R.S. member of the Royal Academy of Sciences at Lisbon; Fellow of the Linnæan Society; honorary member of the Royal Medical Society at Edinburgh, &c.

  • William Withering
Date:
1796
Catalogue details

Licence: Public Domain Mark

Credit: An arrangement of British plants; according to the latest improvements of the Linnaean system. To which is prefixed, An easy introduction to the study of botany. Illustrated by copper plates / by William Withering, M.D. F.R.S. member of the Royal Academy of Sciences at Lisbon; Fellow of the Linnæan Society; honorary member of the Royal Medical Society at Edinburgh, &c. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    with Tubercles. calca'reus. immer’sus. sanguina- rius. L. Tubercles black ; crust clear white. Dill. 18.8. Hard, stony, firmly fixed to the rocks, gritty when chewed, rather rough, cracked, set with minute white eminencies, white within, thicknefs of half a straw’s breadth. Tubercles rarely found, scattered, black, not bordered. Dill, black within, which distinguishes it from the L. sanguinarius. On most of the rocks of Glyder mountain, Caernarvonshire. Dill. On limestone rocks in the north of England and Wales. Kuds. On the Pentland Hills. Lightf. On old walls. Relh. Jan.—-Dec.f L, Tubercles black, immersed as it were in the stone; crust white. Hojfm.lich.1.12. 2 to %-E.bot.z93. Crust a white spot, scarcely distinguishable from a calcareous stone; in some instances mealy, in others white as milk, often intersected by black lines; marked with minute black hollow dots. Tulercles immersed in the substance, small, black, roundish, flat; at length convex, and escaping from the stone leaving a cavity. Hoffm. Crust sometimes greenish. Weber. On pieces of chalk. Relh. n. 1026. [On ragstone and lime- stone long exposed to the weather.] P. Jan.—Dec, L. Tubercles black, not bordered; bright red within: crust white, polished. E. bot. Hoffm.i-E.bot.i 5g-Hojfm,enum.5.4 and5. Wiegel obs. 2. 13, has been quoted as this plant, but he describes the tubercles as filled with a black powder; and the crust being of a grey green. Hoffm. enum. 5, 4 and 5, called L. sanguinarius, has black lines upon the crust, though the tuber- cles seem nearly the same, being filled with a rust-coloured pow- der. Dill. 18. 3, quoted by Linn, has also black lines upon the crust, which is described as grey green; the contents of the tu- bercles are not mentioned, but had they been bright red within, such a circumstance would hardly have escaped him. The L. * f This species is so peculiar to limestone rocks, that wherever that stone Occurs among others, it may be distinguished at the first view by this plant growing upon it. When dried, powdered, and steeped in urine, it is used to dye scarlet, by the Welch and the inhabitants of the Orkneys. The co- lour is said to be very fine.