. Dansk botanisk arkiv. Plants; Plants -- Denmark. C. : Contributions to West Australian Botany. I. 35 as in fig. 12 D of "Das Pflanzenreich", IV 11, p. 37); they differ considerably from the connectives of P. oceanica which are broadly obovate-cordate with a long mucro and as a rule are denticulate at the base of the mucro. On their outer face there is a keel on which the pollen sacs were placed, but these are thrown off after flowering (Fig. 21a). The base of the fruit is fringed by the persistent connectives as by a cup-shaped perianth (Fig. 20). The female organ consis
. Dansk botanisk arkiv. Plants; Plants -- Denmark. C. : Contributions to West Australian Botany. I. 35 as in fig. 12 D of "Das Pflanzenreich", IV 11, p. 37); they differ considerably from the connectives of P. oceanica which are broadly obovate-cordate with a long mucro and as a rule are denticulate at the base of the mucro. On their outer face there is a keel on which the pollen sacs were placed, but these are thrown off after flowering (Fig. 21a). The base of the fruit is fringed by the persistent connectives as by a cup-shaped perianth (Fig. 20). The female organ consists of one sessile carpel terminating in a sessile stigma which is said to be lobed (F. v. Müller (1868): "stigmate sessili. inæqualiter in lobos 3—4 acutos fisso"; Bentham gives (1878): "a thick 2-to 4-lobed stigma"). In fruiting specimens the stigma is still discernible as a small, somewhat irregular knob. The fruits (Fig. 20) are oblique-ovoid or ovoid-lanceolate, with a fleshy pericarp; the colour is pale or yellowish olive-green, and the dimensions are: length 20—27mm, breadth 8—10 mm. At maturity the fruits become detached, rise to the surface of the water and float owing to the lacunose aérenchyma of the fleshy exocarp. This part of the peri- carp splits irregularly from the base into two or three lobes (Fig. 22 a), so that the FiS-2L Posidoniaau- v & n straits, a, Connectives "stone" drops out and sinks to the bottom of the anthers, pollen as it is heavier than water. The irregular sacs thrown off (about . i i J» Anat-size)- b, Trans- dehiscence of the fruit is comparable ol verse section of a fruit that of the walnut (Juglans). The "stone" has ( ™t size)- c> v ° ' i-i Longitudinal section no real hard endocarp, only a thin, almost of a fruit (2/3 nat. size). membranous cover for the embryo. The latter protrudes at the apex splitting the membrane into two or three lobes and leaving the way open for the plu
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Keywords: ., bookcentury1900, bookcollectio, bookdecade1910, booksubjectplants
