162 Benson . — Telangium Scotti , a new Species of 
no sporangia can therefore be included in the genus Calymmatotheca , which 
he founded upon C. S t anger i, C. Haneri , C. S chimp eri, and C. minor. 
I have founded therefore the form-genus Telangium for the reception of 
such specimens as can be diagnosed as follows : — Fertile and barren pinnae 
dissimilar ; fertile pinnae represented by synangia only ; synangia borne at 
the extremity of the ultimate ramifications of rachis, composed of 6-12 
sporangia which taper to the apex and are united primarily for almost 
their whole length to form a body which is continued into a sterile base of 
decreasing diameter through which runs longitudinally a single vascular 
strand. Each sporange ultimately becomes almost free from the others by 
septicidal dehiscence and liberates large spores from a ventral suture. As 
I have not been able to identify these new specimens with any so far 
described species, I have much pleasure in calling it Telangium Scotti , 
after Dr. D. H. Scott, F.R.S., whose work on Lyginodendron has added 
to the interest in this type of fructification. 
The first specimen that came into my hands was the longitudinal, 
tangential section represented in PI. XI, Fig. t. 
The longitudinal dimensions of the sporange on the left are 3-2 mm., 
but the full length of the sporange was probably somewhat greater. If 
one compares Fig. 8 one sees that the sporange has really a free narrow 
apex which brings its length up to 3-8 mm. 
The sterile base would probably have brought the length of the whole 
synangium up to at least 5 mm. 
The width of the synangium averages a little under 3 mm. before 
dehiscence, if it be measured at the widest part. 
Shortly after examining this preparation I was enabled by the kindness 
of Prof. F. W. Oliver to look through slides from a similar source that 
belonged to the Collection at University College, London. These yielded 
a beautiful series of four slides (C.N. K3 a-d ), cut from a block containing 
three synangia, and Figs. 2 and 3 have been drawn from them. Mr. Lomax 
has recently cut another excellent series, which is now in Dr. Scott’s Col- 
lection, and has been kindly lent to me with other slides for the purposes of 
this paper. 
One slide from the Manchester Collection, which I owe to the kind- 
ness of Prof. Weiss, has also been of service and is shown in Fig. 9. 
It will be seen from the drawings that the synangium has eight 
sporangial chambers arranged in two rows. If we take the transverse 
sections in the order of their position, beginning at the base, we should first 
examine Fig. 4 A, which is a transverse section of a synangium immediately 
below the insertion of the sporangia. 
The long diameter of the ellipse is 1*7 mm., and the short diameter is 
^9 mm. in length. 
This section shows the vascular bundle in transverse section, the 
