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Bowenia
The genus ''Bowenia'' includes two living and two fossil species of cycads in the family Stangeriaceae, sometimes placed in their own family Boweniaceae.〔Stevenson, Dennis William. 1981. ''American Journal of Botany'' 68: 1114〕 They are entirely restricted to Australia. The two living species occur in Queensland. ''B. spectabilis'' grows in warm, wet, tropical rainforests, on protected slopes and near streams, primarily in the lowlands of the Wet Tropics Bioregion. However it has a local form with serrate pinna margins that grows in rainforest, ''Acacia''-dominated transition forest and also ''Casuarina''-dominated sclerophyll forest on the Atherton Tableland, where it is subject to periodic bushfire. ''B. serrulata'' grows in sclerophyll forest and transition forest close to the Tropic of Capricorn.〔(Kew World Checklist of Selected Plant Families )〕〔Hill, K.D. & Stevenson, D.W. (1999). A world list of Cycads, 1999. Excelsa 19: 67–72.〕〔Christenhusz, M. J. M., J. L. Reveal, A. K. Farjon, M. F. Gardner, R. R. Mill & M. W. Chase. 2011. A new classification and linear sequence of extant gymnosperms. Phytotaxa 19: 55–70.〕
The fossil species ''Bowenia eocenica'' is known from deposits in a coal mine in Victoria, Australia, and ''B. papillosa'' is known from deposits in New South Wales. Both fossils are of Eocene age, and consist of leaflet fragments.〔(Hill, R.S. 1978. Two new species of ''Bowenia'' Hook, ex Hook, f. from the Eocene of eastern Australia. ''Australian Journal of Botany'' 26(6) 837–846. )〕
==Species==
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