New Zealand plants and their story . owland, but ascends to about 3,000 feet; it alsooccurs, but considerably modified, on the actual coast. The rocks of Banks Peninsula have a distinct vegetation of theirown. Its fullest development is on rocky faces with a southernaspect. The association is distinguished by the presence of the lovelyVeronica Lavaudiana, a small shrub — confined to the peninsula—of rather straggling habit, with beautiful substantial dark-green 6—Plants. 82 NEW ZEALAND PLANTS. leaves edged with red, and bunches of many small white flowersslightly rosy in the bud. Also two othe
New Zealand plants and their story . owland, but ascends to about 3,000 feet; it alsooccurs, but considerably modified, on the actual coast. The rocks of Banks Peninsula have a distinct vegetation of theirown. Its fullest development is on rocky faces with a southernaspect. The association is distinguished by the presence of the lovelyVeronica Lavaudiana, a small shrub — confined to the peninsula—of rather straggling habit, with beautiful substantial dark-green 6—Plants. 82 NEW ZEALAND PLANTS. leaves edged with red, and bunches of many small white flowersslightly rosy in the bud. Also two other plants characterize thisassociation—herbaceous groundsels with leaves of great size, whiteunderneath — Senecio lagopus (fig. 49) and S. saxifragoides. Thedistribution of these two species is one of the most remarkablecases of plant - distribution in the world. It has recently beenmost carefully investigated by Professor Arnold Wall. The twospecies, or more properly varieties of an aggregate species, differ Coopers Knob o. Map of Banks Peninsula and Port Hills, showing distribution of the two species ofSenecio. L, Senecio lagopns; S, Senecio saxifragoides ; A, rhyolite escarpmentwhere S. lagopus occurs; B, rhyolite escarpment where neither species Inst.] [After Wall. only in the degree of certain characters common to both—namely,the presence of bristles on the leaf-blade and silky hairs onthe leaf-stalk; but these differences hold good for each , as the above map shows, S. lagopus is confined to BanksPeninsula proper, and S. saxifragoides to the Port Hills. Such a ROCK-PLANTS OF BANKS PENINSULA. 83 selecting-power of the habitat, each part of the peninsula choosing the plant it likes best, is almost beyond belief ; andyet for some reason or other the two species keep quite separate,their areas of distribution being separated only by a gap of barelya mile, where neither grows ! A species of Anisotome not yet bearing a name, it having be
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1919
