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.

    23/452 (page 11)
    with Tubercles. Rocks and large stones about St. Ives, Cornwall, plentifully. [Rocks about Kirby Lonsdale, Westmoreland. Dr. J. E. Smith. About Gam, abundantly. Mr. Griffith ; on Limestone.] P. Jan.—Dec. L. Tubercles black: crust brown. fusco-a'ter. ‘Jacq.collXi.i^.'i,, as on rocks; 4 as on trees. Crust rough, mealy, thin, hardish, closely adhering, dirty ob- scure grey. ‘Tubercles lentil-shaped, convex, black, not bordered with a different colour. Jacq. Tubercles rough, black throughout. On rocks and stones. On trees at Enville, Staffordshire. P. Jan.—Dec. Relhan. July. Var. 2. Tubercles black: crust none. Scop. p. 364. Weber p. igi. Hagen, p. 49. On soaking it in water some very line branny flakes separated from the indurated clay on which it grew. [On a mud wall. Specimen from Major Velley.—On rocks in the north. Dr. Alexander.] L. Tubercles black, with an indistinct black border; partly Oede’ri. imbedded in the crust: crust rusty red, rough, cracked. HoffinJich. 19.2. 1 Crust half a line thick, cracking into small partitions when dry, colour of rusty iron. Tubercles numerous, sometimes crowded, blue-black, encompafsed with a narrow margin, shining when wet, flat, but convex and perforated at the top when old. Hoffm. Rocks and stones in Scotland. Jb. Tubercles black, partly sunk in the crust: crust yel- quer'neus. lowish, with a tinge of brown. Dicks. 2.3. ) Crust growing irregularly to the bark of trees, composed of granules of a pale yellow. Tubercles convex, unequal, which from the risings of the crust sometimes seem as if immersed. Very much resembling a Byfsus, but its fructification proves it to be a Lichen. Dicks. Crust followingthe sinuosities of the bark, without any defined margin, composed of microscopic granules of a dirty cream colour. Tubercles rather rare, minute, seldom so large as the smallest pin’s head ; blackish, irregularly dispersed. Mr. Wo QDWAP.Do