74 PROCEEDINGS OF THE ROYAL SOCIETY CF QUEENSLAND. 
of the lower basal auricle often overlapping the upper surface 
of the branchlet, and the upper basal auricle overlapping the 
under surface of the branchlet, midrib immersed and a few 
indistinct primary veins visible on upper surface of leaf, midrib 
raised and primary veins slightly more evident on the under 
side ; measurement of leaf-blade, 1-2 in. (2-5-5 em.) long, 4-6 
times as long as broad. Flowers in short axillary racemes of 
2-5 flowers, the rhachis about 1 line (2 mm.) long. Pedicels 
capillary, 3-4 lines (6-8 mm.) long, each subtended by a lanceo- 
late, concave bract about }-line (1 mm.) long. Calyx divided 
to the base into 4 lanceolate sepals about }-line (1 mm.) long ; 
petals 4, very shortly united and overlapping at the base, 
ovate, acuminate, nearly 1} line (3 mm.) long. Stamens 4, 
subsessile, lanceolate or narrowly traingular, subcordate, about 
1 line (2 mm.) long; slits of anther cells extending to the full 
length of the cells. Ovary ovoid, tapering into a fairly slender 
style. (Text-figure 5.) 
Hab.: Bellenden-Ker, common in lowland forests, C. T. White 
(flowering specimens, type); Glenallyn, Atherton Tableland, Gourka 
Pocket, Atherton Tableland, C. T. White. 
OrpDER SAPOTACEZ. 
Lucuma castanospermum (C. T. White) n. comb. This 
species was described and named from fruiting specimens by 
C. T. White as Chrysophyllum castanospermum in Bot. Bull. 
xxi., p. 12, Department of Agriculture and Stock, Brisbane. 
Examination of flowers, recently collected on the Atherton 
Tableland by G. Curry, shows that the species should be placed 
in Lucuma. Following is a description of the flowers, which 
were not available previously : 
Calyx-lobes 5, ovate, obtuse, imbricate, silky pubescent, 
about 3 lines (6 mm.) long. Corolla-tube shortly cylindrical or 
constricted about the middle, hirsute inside towards the base, 
about 5 lines (10*mm.) long; lobes 5, their margins over- 
lapping towards the base, broadly ovate, obtuse, about 1 line 
(2 mm.) long. Staminodia 5, obtuse, alternating with the 
corolla-lobes and about two-thirds their length. Stamens 
alternating with the staminodia and inserted lower in the 
corolla-tube ; filaments slender, under }-line (1 mm.) long ; 
anthers ovate, almost 1 line (2 mm.) long. 
The presence of the staminodia in the flower and the 
absence of albumen in the seed indicate that this species should 
be assigned to Lucuma. 
