. Dansk botanisk arkiv. Plants; Plants -- Denmark. C. : Contributions to West Australian Botany. I. 33 split into 2—3 lobes, and the whole pericarp was spread out as a nearly flat body, thus liberating the seedling which had drop- ped out. These empty pericarps were present in great masses on the shore, and were also to be seen in immense numbers float- ing in the water. Amongst the empty pericarps I found several whole fruits which had just begun to open; they are oblique- ovoid in shape and each contains a large green seedling. Unope- ned fruits were also found, some unripe or bar
. Dansk botanisk arkiv. Plants; Plants -- Denmark. C. : Contributions to West Australian Botany. I. 33 split into 2—3 lobes, and the whole pericarp was spread out as a nearly flat body, thus liberating the seedling which had drop- ped out. These empty pericarps were present in great masses on the shore, and were also to be seen in immense numbers float- ing in the water. Amongst the empty pericarps I found several whole fruits which had just begun to open; they are oblique- ovoid in shape and each contains a large green seedling. Unope- ned fruits were also found, some unripe or barren. Evidently Posidonia liberates its fruits when ripe, and owing to presence of air in the tissues of the pericarps they rise to the surface and float. Then they open and the seedling, which is heavier than Water, drops out and sinks to the bottom while the pericarp continues to float for a time and then breaks ; ,,The thousands of pale green or yellowish green open pericarps, form, together with the leaves, a fringe along the shore, and present a peculiar sight". A later examination of the material collected and of further £ig. 18. Posidonia australis, from „ 0 . ... Carnarvon. 1 ransverse section of a specimens from South Australia has leaf-blade. The thick walls of the added to my notes and allows epidermis and the selerenchyma- . ii-,- strands are shown in black, the me to make some additions to vein (one of the lateral veins) is the descriptions of the species as shaded, x, lacunæ. (About i5"/i „ nat. size. given in floras. The creeping rhizome is short-jointed, and in the axil of each leaf there is a short erect shoot with densely arranged lea- ves. As in the Mediterranean species, the leaf-sheath (8—12 cm long) persists for some time after the shedding of the lamina; the old sheaths split into fine filaments consisting of the scle- renchyma-strands. Thus the erect shoots become enveloped at their base in a cover of these filamentous remains,
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