. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. CARYOPHYLLEAE 133. Krascheninikovia Turcz. Kuhn states that cleistogamous flowers occur in this genus. 185 134. Arenaria L. Flowers small and white, homogamous or protandrous, with half-concealed nectar secreted in the usual place. 461. A. serpyllifolia L. (Herm. MuUer,' Weit. Beob.,' II, p. 226; MacLeod, Bot. Jaarb. Dodonaea, Ghent, vi, 1894, p. 161; Kirchner, 'Flora v. Stuttgart,' p. 754; Schulz, 'Beitrage,' I, p. 19, II, p. 47.)—In this species the stamen
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. CARYOPHYLLEAE 133. Krascheninikovia Turcz. Kuhn states that cleistogamous flowers occur in this genus. 185 134. Arenaria L. Flowers small and white, homogamous or protandrous, with half-concealed nectar secreted in the usual place. 461. A. serpyllifolia L. (Herm. MuUer,' Weit. Beob.,' II, p. 226; MacLeod, Bot. Jaarb. Dodonaea, Ghent, vi, 1894, p. 161; Kirchner, 'Flora v. Stuttgart,' p. 754; Schulz, 'Beitrage,' I, p. 19, II, p. 47.)—In this species the stamens and stigmas mature simultaneously, and in sunshiny weather drops of nectar can be seen in the base of the flower. Schulz also observed female flowers on gynomonoecious, rarely on gynodioecious plants. In hermaphrodite flowers the stamens are frequently reduced in number; and automatic self-pollination by contact of stigmas and anthers is Fig. 55. Arenaria bijiora^ L. (after Herm. Miiller). A, Flower in the first (male) stage. B. Flower (with 5 styles) in the second (female) stage, seen from above. C. Stamens and nectaries of the same flower. Visitors.— Herm. MuUer observed 2 small short-tongued bees—Sphecodes ephippius L. 5, and Halictus lucidulus Schenck $, skg.—both capable of effecting cross-pollination. MacLeod saw a hover-fly in the Pyrenees (Bot. Jaarb. Dodonaea, Ghent, iii, 1891, p. 377). In Dumfriesshire, a hover-fly and Thrips have been recorded (Scott-Elliot, 'Flora of Dumfriesshire,' p. 26). 462. A. biflora L. (Herm. Miiller, ' Alpenblumen,' pp. 185-7; Schulz, ' Beitrage,'II, pp. 47-8.)—The white flowers are protandrous, but the periods of maturation, not only of the outer and inner stamens, but also of the inner stamens. 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 Kn
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