Philosophical transactions, Vol. L. Part II. For the year 1758. / Giving some account of the present undertakings, studies, and labours, of the ingenious, in many considerable parts of the world.

by Various; Royal Society

21. Sonchus Tingitanus papaveris folio. Tourn. Raii Suppl. 137. Scorzonera Tingitana Sp. pl. 791. African Sowthistle with a poppy leaf. This plant opens its flowers between four and six in the morning, and closes them in about three hours.

22. Sonchus repens, multis hieracium majus J. B. II. 1017. Raii Syn. 163. Sonchus arvensis Sp. pl. 793. Tree Sowthistle. These flowers expand about six or seven, and close between eleven and twelve in the forenoon. This is common in corn-fields, and flowers in June, July, and August.

23. Sonchus lævis Ger. Raii Syn. 161. Sonchus oleraceus Sp. pl. 794. Smooth or unprickly Sowthistle, Hares Lettuce. These open about five in the morning, and close again at eleven or twelve.

24. Sonchus lævis laciniatus cæruleus C. B. pin. 124. Raii Hist. pl. 225. Sonchus alpinus Sp. pl. 794. Blue-flowered Mountain Sowthistle. These open about seven, and close about noon.

25. Sonchus tricubitalis, folio cuspidato Merr. pin. Raii Syn. 163. Sonchus asper arborescens C. B. pin. 124. Sonchus palustris Sp. pl. 793. The greatest Marsh tree Sowthistle. It expands its flowers about six or seven, and closes them about two in the afternoon.

26. Lactuca sativa C. B. pin. 122. Sp. pl. 795. Garden Lettuce, opens its flowers about seven, and closes them about ten, in the forenoon.

27. Dens leonis Ger. 228. Raii Syn. 170. Leontodon Taraxacum Sp. pl. 798. Dandelion. It expands at five or six, and closes at eight or nine, in the forenoon. This flowers early in the spring, and again in the autumn.

28. Dens leonis hirsutus leptocaulos, Hieracium dictus. Raii Syn. 171. Leontodon hispidum Sp. pl. 799. Rough Dandelion, or Dandelion Hawkweed. This plant opens its flower about four in the morning, and keeps it expanded till three in the afternoon. In May.

29. Hieracium minus præmorsa radice. Park. 794. Raii Syn. 164. Leontodon autumnale. Sp. pl. 799. Hawkweed with bitten roots, or Yellow Devil’s-bit. The flowers open about seven, and keep in an expanded state till about three in the afternoon. It flowers in July and August.

30. Pilosella repens Ger. 573. Raii Syn. 170. Hieracium Pilosella Sp. pl. 800. Common creeping Mouse-ear. It opens about eight in the morning, and closes about two in the afternoon. Very common on dry pastures, flowering in June and July.