. The natural history of plants. Botany. Stirlinffia^ (fig. 236, 237) consists of Proteaceai witli regular her- maphrodite flowers and syngenesious anthers. The perianth consists of four leaves, free above and finally reflexed. The stamens, inserted on the perianth, consist of a free filament, and an introrse two-celled anther. Each cell, opening broadly inwards on each side, is united by its edges to the corres- ponding cell of the neighbouring anther to form a single cavity containing the pollen. On the separation of the two half-cells belonging to two different anthers, the pollen is freed.
. The natural history of plants. Botany. Stirlinffia^ (fig. 236, 237) consists of Proteaceai witli regular her- maphrodite flowers and syngenesious anthers. The perianth consists of four leaves, free above and finally reflexed. The stamens, inserted on the perianth, consist of a free filament, and an introrse two-celled anther. Each cell, opening broadly inwards on each side, is united by its edges to the corres- ponding cell of the neighbouring anther to form a single cavity containing the pollen. On the separation of the two half-cells belonging to two different anthers, the pollen is freed. The gynaeceum is composed of a one-celled ovary, surmounted by a style which is dilated above into a sort of concave stigmatiferous head. Within the ovary is a single ascending ana- tropous ovule, with its micropyle downwards and outwards. The fruit is a hairy one-seeded nut. The genus Stirlingia consists of some half-score species'' of shrubs from Australia; their leaves are alternate and repeatedly incised into dichotomous filiform or flattened strips. The flowers form capitula, which are solitary, or more frequently in simple or ramified racemes. This series also contains the genera Conospermum and Synaphea, especially remarkable for their ir- regular androceum and descending ovule. The confluence of the ad- jacent anthers is the chief reason for placing them next to Stirlingia. Conospermum^ (fig. 218) has regular or irregular hermaphrodite flowers. The perianth is tubular, gamophyllous above; it then expands into a limb of four equal or unequal lobes valvate in the bud. When the lobes are unequal, the posterior one is largest and is reflected into a sort of helmet (fig. 238), forming a sort of posterior Fia. 236. Flower (4). Stvrlingia Fia. 237. Diagram. ' Endi., Gen., n. 2133; Iconogr., t. 22.— Meissn., Prodr., 325.—Simsia E. Be., in Trrnis. Lirm. Soc, a. 155; Prodr., 369 j Suppl., 9 (nee Pbes.) 2 Meissk., in PI. Freiss., i. 515; in Soo^. Joum. (1852), 184.
Size: 1574px × 1587px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
