. Notes on the life history of British flowering plants. Botany; Plant ecology. Fig. 203. Fig. 204. Fig. 205. Pig. 203.—Barlsia alpina. Subterranean bud. Nat. size. Fig. 20i.—Cross section through part of this bud. x 60. Fig. 205.—The margin of a bud scale in section, x 200. leaves are typical of plants growing in cold, wet regions (see Cerastium alpinum, p. 28). B. Odontites.—The flower forms a tube 4-5 mm. long, at the base of which is the honey, while the entrance is protected against rain by the four hairy anthers. These lie close together ; but im- mediately below them the filaments of th
. Notes on the life history of British flowering plants. Botany; Plant ecology. Fig. 203. Fig. 204. Fig. 205. Pig. 203.—Barlsia alpina. Subterranean bud. Nat. size. Fig. 20i.—Cross section through part of this bud. x 60. Fig. 205.—The margin of a bud scale in section, x 200. leaves are typical of plants growing in cold, wet regions (see Cerastium alpinum, p. 28). B. Odontites.—The flower forms a tube 4-5 mm. long, at the base of which is the honey, while the entrance is protected against rain by the four hairy anthers. These lie close together ; but im- mediately below them the filaments of the stamens separate, so as to leave a space (Fig. 206,.e) through which bees can insert their proboscis and thus reach the honey. In doing so they natur- ally dust themselves with pollen, some of which they transfer to the stigma (Figs. 206, 207, st) of the next flower they may visit. In warm and sunny places, where insect visits are numerous, the stigma projects well above the anthers (Fig. 207); in cold and shaded places, where insects are comparatively few, it scarcely projects beyond the Fig. 206. Fig. 207. Fig. 206.—Bartsia Odontites. Flower with short pistil. Fig. 207.—Flower with long pistil. e, entrance to flower ; st, 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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Keywords: ., bookauthorlub, bookcentury1900, bookdecade1900, booksubjectbotany
