4 8 
Sinnott . — The Morphology of the 
indiscernible. The nucellus is free only at its very apex from the integu- 
ment, which is fused with the epimatium throughout. 
Although the four sub-genera of Podocarpus differ from one another 
considerably in the structure of the female strobilus, they agree in possessing 
an inverted ovule with integument and epimatium closely united. The genus 
Dacrydium , however, includes one group of species in which the ovule is 
inverted and another in which at maturity it is almost erect, but in all cases 
the integument is entirely free from the epimatium and the nucellus from 
the integument. The ovulate cones of four species of Dacrydium were 
Diagram 5. Dacrydium Bidzuillii. a, vertical section through strobilus; b-f, successive 
transverse sections from axis to chalaza. 
investigated — D. Bidwillii \ D. cupressinuni , D. Colensoi i and D. intermedium. 
Only in the first two were mature ovules obtainable. 
D. Bidwillii , with two other New Zealand species, agrees with Podo- 
carpus in the possession of an inverted ovule. The much reduced cone 
consists of a very short branch with a number of bracts at its base much 
resembling the scale-like vegetative leaves and one or two axillary inverted 
ovules at its apex (PI. VII, Fig. 11 ; Diagram 5, A). The vascular supply of 
the cone, as in Podocarpus , is a ring of bundles and canals from which a small 
strand departs to each bract (Diagram 5, B). This is followed, in the case 
of the fertile bracts, by two bundles which fuse by their adaxial ends and 
