94 BOTANICAL GAZETTE [avoust 
point of resemblance, however, between Araucarineae, Phyllocladus, 4 
and Podocar pus is found in the cutting off of the ventral canal nucleus _ 
in the archegonium. : 
SAXEGOTHAEA 
The resemblance of Saxegothaea to the araucarians, noted by 
Stites (15), Nor&Nn (11), THompson (18), and T1son (22), consists 
chiefly of anatomical characters and certain external features of the : 
cones. Stites finds in the stem tracheids somewhat araucarian in 
character, “an occasional tendency to a two-ranked arrangement of 4 
the pits, and in these cases the pits become alternate and hexagonal.” — 
Two-ranked and alternate pits horizontally flattened have also been 
found in Dacrydium. The prominence of transfusion tissue is another 
character suggestive of araucarian affinity. 
The staminate cone is described by StILEs as somewhat araucarian 
in general appearance, and the wall of the microsporangium as strik- 
ingly like that of Araucaria Rulei. Brooxs and Stizzs (r1), in their 
study of Podocarpus spinulosa, state that the wall of the sporangium 
is very like that of Saxegothaea and Araucaria. Wingless pollen 
is another point of contact. The fact that the pollen grains of all 
the other Podocarpineae have wings does not affect the argument, — 
if we accept THompson’s theory that they were developed within the 
group (15, 16). : 
In the ovulate cones of both Saxegothaea and Araucaria, especially 4 
A. Rulei, there is a gradual transition from foliage leaves to SPOFO — 
phylls. This and the similarity in the vascular anatomy are COP” — 
sidered by THompson and Tison as indications of the simple nature a 
of the strobilus in these groups. The occurrence of a single resi — 
duct in the sporophyll is, according to SrrtEs, another indication of - 
this in Saxegothaea. 
One of the most striking features of Saxegothaea is the projection 
of the nucellar tissue through the micropyle, where it expands 1 
form a stigma-like knob. The same thing occurs less conspicuously 
in Araucarineae, but, with the exception of a few abnormal cases 
angiosperms, is elsewhere unknown. This feature appears to be 
related physiologically to the difficulty of fertilization, and its MOF 
phological significance is doubtful. THompson (19) sees in it 4 
