265 
amongst whom Sachs and von Mohl, regarded those 
ovules to be metamorphosed bracts. 
It was Bayer (9) and later on Renner, who observed 
the following case. Around the central axis he found three 
bracts and four to five corresponding ovules, meanwhile 
a ring of threé superposed bracts alternating with the 
first. From which may be concluded that it is impossible 
to suppose the ovules to be transformed bracts. It is 
evident that the ovules, belonging to the sporophylls have 
changed of position in order to obtain a better place of 
development. 
When ripe, the sporophylls and bracts become fused 
with one another, forming mostly a round fleshy berry, 
in which the seeds are entirely enclosed. 
There is a well developed integument round the nucellus, 
quite free from it, and built up of a thin exotesta, a thick 
sclerotesta and a thin fleshy endotesta. 
On the ripe seeds two, three or four well-marked ribs 
are to be found and on transverse sections through those 
ribs, the sutures can be clearly seen. 
The seeds of Jun. phoenicea bear small wings on two 
opposite ribs, sometimes on three, reaching from halfway 
up the height to near the micropyle. 
$ 22 /Callitris. 
Material: C. quadrivalvis Vent. Bot. Gard. Lisbon. 
C. calcarata R.Br. | , Rome. 
The female strobilus is formed at the end of short 
shoots and is generally composed of four pairs of decus- 
sate bracts or sporophylls, which continue the phyllotaxis 
of the sterile leaves. The two lower pairs of bracts are 
very small, like the trophophylls and with regard to the 
