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Idiospermum (Idiospermaceae), a new genus and family for Calycanthus australiensis

S. T. BLAKE
Contributions from the Queensland Herbarium
No. 12 (4th September, 1972), pp. 1-37
Published by: Queensland Herbarium
Stable URL: http://www.jstor.org/stable/41781972
Page Count: 39
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Abstract

Idiospermum australiense (Diels) S. T. Blake is based on Calycanthus australiensis Diels following the rediscovery of this species previously known only from one imperfect specimen now lost, the description based on it, and a sketch of a leaf and flower. The embryos in the recently collected material with three or four distinct very large peltately attached fleshy cotyledons are quite unlike those of any described family; the very many spiral tepals associated with a hollowed receptacle and a single carpel and laminar stamens with exalbuminous seeds are unique combinations of characters. Idiospermum occupies an isolated position in the Magnoliales.

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