Cordaicarpus species (Figure 24). 
It is unnecessary to give a new name to this seed for 
the present, although it seems to represent an undescribed 
species. Dr. Fredda Reed (15) recently described, with- 
out specific name, a small cardiocarp (Bot. Gaz. vol. 100, 
p. 784, fig. 26, 1989) which may well be identical with 
the seed here reported. It shows a more or less spinous 
sclerotesta. 
The remarkable agreement in all dimensions of the 
impressions with the dimensions of the complete seeds 
known in detail under the name Cordaicarpus spinatus 
suggests that, when histological study of the seed has 
been completed, it may reveal a close similarity to a Cor- 
daicarpus of the spinatus type. 
In my opinion either of these cordaicarps represents 
the seed of Cordaianthus shuleri and the implication is 
that perhaps both seeds are only different aspects of one 
and the same form. 
SUMMARY. 
Cordaianthus shuleri Darrah is a new species of cor- 
daitean fructification, referable to the stem-type known 
as Mesoxylon. Both male and female strobili are known 
trom many specimens. ‘Their construction is similar, and 
the strobili are very simple aggregations of spirally dis- 
posed segments some of which are fertile. ‘Those female 
strobili which bear asingle ovule have the ovule terminal. 
Those which bear several ovules bear them near the sum- 
mit of the conical tip of the axis. The male stobilus bears 
a number of sporophylls each of which is surmounted by 
six erect, elongate pollen-saes. The pollen bear extensive 
gametophytic tissue. 
Attention is called to the abundant and varied detach- 
ed leaves of Cordaites found in nearly all of the coal balls, 
and one type is provisionally referred to Cordaites crassus 
Grand’ Kury. 
[15 ] 
