358 Mr. R. Kidston. Occurrence of Microsporangia {May 25, 
10. Czapek, F. “The Antiferment Reaction in Tropistic Movements of Plants,” ‘ Annals 
of Botany,’ 1905. 
11. Darwin, O., and Pertz, D. F. M. “Note on the Statolith Theory of Geotropism. 
1. Experiments on the Effects of Centrifugal Force.” ‘ Roy. Soc. Proc., June, 
1904. 
12. Walker, J. “The state of Carbon Dioxide in Aqueous Solution,” ‘Journ Chem. Soc., 
London, 1903. 
Prelinunary Note on the Occurrence of Microsporangia in Organic 
Connection with the Foliage of Lyginodendron. 
By R. Kipston, F.RS.L. & E., F.GS. 
(Received May 25,—Read June 8, 1905.) 
(PLATE 6.) 
Any certain knowledge at present possessed of the fructification of the 
Pieridospermec* is restricted to the female organ or seed. Suggestions have 
been made that the microsporangia of Lyginodendron Oldhamiwm, the 
Sphenopteris Honinghaus: of Brongniart, might be found in Telangiwm 
Scotti,t but the evidence for this was chiefly its association with fragments of 
Lyginodendron Oldhamium. From the structure of Telangwm Scotti, I 
am satisfied that it cannot be the microsporangia of Sphenopteris Honinghaust, 
and in any case the organic connection was not demonstrated. 
Among some specimens from the 10-foot ironstone measures (Westphalian, 
series), Coseley, near Dudley, sent me for examination by Mr. H. W. Hughes, 
F.G.5., were a number of examples of Sphenopteris Honinghausi preserved in 
small nodules. 
Many of these were fragments of barren pinne, but a few showed a fructi- 
fication referable to Crossutheca, Zeiller,t in organic connection with barren 
foliage of Sphenopteris Héninghaust, while other specimens consisted of fertile 
pinne or portions of pinne unassociated with any barren pinnules. Their 
identity with the fertile pinnules found in connection with sterile ones, leaves 
no doubt as to their also belonging to Sphenopteris Honinghaust. 
I do not propose to enter into a detailed account of the structure of the 
* Oliver and Scoti, “On the Structure of the Paleozoic Seed Lagenostoma Lomaxi, 
etc.,” ‘Phil. Trans.,’ ser. B, vol. 197, p. 239, 1904. 
+ M. Benson, Telangium Scotti, a new species of Telangium (Calymmatotheca), showing 
structure, ‘Ann. of Botany,’ vol. 18, p. 161, Pl. 11, 1904. 
t Crossotheca, Zeiller, ‘Ann. d. Sc. Nat., 6° sér., Bot.,’ vol. 16, p. 180, Pl. 9, figs. 1—9, 
Aug., 1883, “ Flore foss. Bassin houiller d. Valenciennes,” p. 33, fig. 21, 1888. 
