. Notes on the life history of British flowering plants. Botany; Plant ecology. 250 BRITISH flowp:ring plants There are four British species: one, S. alpinus, with blue, the others with yellow flowers; of these S. oleraceus is annual, the other two perennial; one, S. palustris, has the auricles of the leaves narrow and acute; the other, S. arvensis, short and broad. S. arvensis is a " Sunflower," turning round so as to face the light. The flower-heads and peduncles are hispid with black or brown glandular hairs. The stem is hispid and glandular above, glabrous below. S. palustris.—A
. Notes on the life history of British flowering plants. Botany; Plant ecology. 250 BRITISH flowp:ring plants There are four British species: one, S. alpinus, with blue, the others with yellow flowers; of these S. oleraceus is annual, the other two perennial; one, S. palustris, has the auricles of the leaves narrow and acute; the other, S. arvensis, short and broad. S. arvensis is a " Sunflower," turning round so as to face the light. The flower-heads and peduncles are hispid with black or brown glandular hairs. The stem is hispid and glandular above, glabrous below. S. palustris.—A marsh plant in our eastern counties, and now almost extinct. It is glabrous, as is also S. oleraceus, a weed of almost world-wide distribution. S. alpinus, is found on Alpine rocks in the North of Scotland. It has the panicle hispid with jointed glandular hairs ; the leaves are glabrous. Taraxacum (Dandelion) Bracts of the involucre in two sets : outer ones imbricated'; inner row, equal, erect. T. officinale.—A glabrous plant, taking its common name from the teeth of the leaves. These are very large in some cases, and pointing backwards, while in. Fig. 166. Fig. 157. Fig. 1.^8. Fig. 156.—Section of part of a leaf of Dandelion grown in shade. Fig. 157.—Section of part of a leaf grown in diffused light. Fig. 158.—Section of part of a leaf grown in sunshine. other plants, especially in shady places and rich soil, the leaves are often almost entire. The flower-heads close at night and in wet weather. At Upsala, according to Linnaeus, they open at 5-6 in the morning, and close between 8 and 10 ; at Innsbruck, according to Kerner, they open between 6 and 7, and close between 2 and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lubbock, John, Sir, 1834-1913. London, New York, Macmillan and Co. , Ltd.
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