Banksia grossa is a shrub in the plant family Proteaceae endemic to Southwest Australia. It is one of fourteen species of banksia in the series Abietinae, which bear round or oval inflorescences. Collected in 1965, it was described in 1981 by Alex George. Its thick leaves and large seeds distinguish it from other Abietinae species. It is found among heath between Eneabba and Badgingarra, in shallow sand over laterite or in deep sand. It grows as a many-stemmed shrub to 1 m (3 ft) high with narrow leaves and oval brownish flower spikes up to 10 cm (4 in) high, composed of hundreds of individual flowers. Flowering occurs throughout the cooler months. Old flower spikes develop woody follicles which bear the seeds. The plant takes five to seven years to reach maturity and begin flowering. After bushfire, B. grossa regenerates from its woody lignotuber; bushfires also stimulate the release of seeds, which germinate after disturbance. Visitors to inflorescences include insects and the nocturnal white-tailed dunnart. (Full article...)