Journal of Tropical Ecology



SHORT COMMUNICATION

Multiple resprouting from diaspores and single cotyledons in the Australian tropical tree species Idiospermum australiense


Will Edwards  a1 c1 and Paul Gadek  a1
a1 School of Tropical Biology, James Cook University, Cairns, Australia 4878

Abstract

In 1999, Dalling & Harms simulated 100% above-ground herbivory on seedlings of Gustavia superba, a large-seeded species from Barro Colorado Island, Panama, and showed the remarkable ability for cotyledons to regenerate up to eight new shoots. They used this evidence to propose that cotyledon size (at least in this species)was adaptive in surviving pre- and early post-germination hazards (Dalling & Harms 1999). In this note we describe the first record of multiple resprouting in an Australian tropical plant species. Idiospermum australiense (Diels) S. T. Blake (Calycanthaceae) exhibits characteristics similar (but not identical) to G. superba that support the contention of Dalling & Harms (1999).

(Accepted November 3 2001)


Key Words: Idiospermum; large seeds; multiple resprouting.

Correspondence:
c1 Corresponding author: Email: will.edwards@jcu.edu.au