Studies on Homalomeneae (Araceae) of Borneo XIII - New Species of Homalomena
Fig. 8. Homalomena velutipedunculata S.Y.Wong, Y.C.Hoe & P.C.Boyce. A. Inflorescence at onset of pistillate anthesis, lower spathe artificially opened to reveal spadix. B. Detail of pistillate portion and interstice of spadix (spathe artificially removed) at onset of pistillate anthesis. C. Inflorescence at pistillate anthesis with mating pair of Parastasia beetles (Coleoptera: Rutelinae) on the spadix. D. Inflorescence at staminate anthesis. Note the pollen strands covering the staminate portion of the spadix. The beetle just visible behind the spadix is a chrysomelid, Chaloenus, scavenging pollen. E. Inflorescence at staminate anthesis, lower spathe artificially removed. Note that the interpistillar staminodes have been eaten and that that the pistillate zone is covered with beetle excrement. All from P.C.Boyce, Wong Sin Yeng & S.Maclean. Images © P.C.Boyce & Y.C.Hoe.
Fig. 6. Homalomena galbana Baharuddin S. & P.C.Boyce. A. Leaf blade, adaxial view. Note the distinct quilting of the leaf blade between the primary lateral veins. B. Detail of synflorescence. The inflorescence in the foreground is in the early stage of fruiting, that to the left is at post anthesis, and beginning to become declinate. The open inflorescence is at pistillate anthesis, the one directly behind will be open in three or four days. Just visible is a newly emerging inflorescence, with the rostrum already conspicuously bicoloured. C. Spathe. Note that it is deeply fornicate, and that the margins are recurved. D. Inflorescence at pistillate anthesis with spathe artificially removed. Note that the interpistillar staminodes exceed the associate pistil. Note, too, that the staminodes are directed downwards, and that the lowermost ones are appressed to the stipe. E. Detail of staminate zone. The clusters of 4 stamens per flower are easily seen. All images © Baharuddin Sulaiman.