. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. UMBELLIFERAE 509 374. Scandix L. 1187. S. Pecten-Veneris L. (Schulz, 'Beitrage,' II, pp. 91, 94, 191 ; Kirchner, 'Flora v. Stuttgart,' p. 394; MacLeod, Bot. Jaarb. Dodonaea, Ghent, vi, 1894, pp. 280-2; Kerner, 'Nat. Hist. PL, Eng. Ed. i, II, p. 342; Knuth, ' Bloemenbiol. Bijdragen.')—According to Schulz, Kirchner, and MacLeod, the small white flowers of this species are distributed andromonoeciously, and the hermaphrodite ones are homogamous or slightly prot
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. UMBELLIFERAE 509 374. Scandix L. 1187. S. Pecten-Veneris L. (Schulz, 'Beitrage,' II, pp. 91, 94, 191 ; Kirchner, 'Flora v. Stuttgart,' p. 394; MacLeod, Bot. Jaarb. Dodonaea, Ghent, vi, 1894, pp. 280-2; Kerner, 'Nat. Hist. PL, Eng. Ed. i, II, p. 342; Knuth, ' Bloemenbiol. Bijdragen.')—According to Schulz, Kirchner, and MacLeod, the small white flowers of this species are distributed andromonoeciously, and the hermaphrodite ones are homogamous or slightly protandrous. The long-stalked male flowers possess no trace of a pistil; they are usually in the middle of the umbellules, but the primary umbels often contain hermaphrodite flowers only, while the tertiary ones are frequently composed of nothing but male flowers; the number of the latter is generally greater in umbels of high order. Warnstorf (Schr. natw. Ver., Wernigerode, xi, 1896) states that in Brandenburg all the umbels are hermaphrodite to begin with, but become more or less female by the partial or complete degeneration of the anthers. The anthers are greenish-yellow in colour; the pollen-grains white, ovoid, not constricted in the middle, with 3 longitudinal grooves, about 13 /x broad and 30 fj. Fig. 166. Anthriscus sylvestris, Hoffm. (after Herm. MUUer). (l) Flower in the first (purely male) stage. a, immature anthers, hanging out of the flower; a\ mature anthers, projecting obliquely upwards. The styles are not yet (2) Flower in the second (purely female) stage. The stamens have dropped off, the styles have developed, and their stigmas (.s/) are mature, w, nectary; (W, ovary ; p^ inner petal; p\ outer petal. Self-pollination readily takes place, and Kerner says it is brought about by incurving of the filaments, resulting in the anthers being applied to the stigmas. The same authority describes the flowers as protogynous. Visitors.—On the island of Fe
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