66 NEW YORK STATE MUSEUM 
Up until 1905, nothing was known of the male fructifications of 
the Pteridospermophytes; but during that year Doctor Kidston?* 
discovered a species of Crossotheca (C. honinghausi, 
Kidston) in connection with the foliage of Lyginopteris 
(Sphenopteris honinghausi). The fertile pinnules are 
oval in form, measure about 2-2.5mm in length and bear six, rarely 
seven, bilocular sporangia.?* ‘The sporangia which are convergent 
when young, spread out at maturity assuming a fringelike arrange- 
ment, which gives to the sorus the form of an epaulet (figure 7). 
Fig. 7 Crossotheca héninghausi. Fertile pinnae in connection with sterile 
pinnae of Sphenopteris honinghausi, the leaf of Lyginopteris. (x2) 
In our specimens no separate sporangia or microspores have been 
found. The sporangia-bearing organs or modified pinnules are of 
similar character to that of Crossotheca, but they are consider- 
ably larger, broadly funnel-shaped or cup-shaped, with the pedicel 
attached at the center. In general appearance there is a resemblance, 
in the younger specimens, to the moplike clusters of sporangia found 
Cd USHHNS trons OF CeMMAalOpisceils wmirAlMilis descmoed 
by Nathorst?® from the Upper Devonian rocks of Bear Island. Only 
in the mature specimens is it clearly seen that the sporangia of 
VOSS plea tlanhOnMte tal SuSE naVemUecenl DOM e mG tine GulyamOmmnune 
under side of the modified pinnule, while in Cephalopteris 
the clusters of sporangia are borne on a separate stalk on the lower 
surface and at the base of the fertile pinnae. In the matter of the 
sporangia-bearing organ, there is more resemblance between the male 
iructincations of) Hiosipermatopteris: and Liye inioip- 
kadston, R., Proc. Royse (Soc. ((B))910054170:355,00,) pi Osmihil ss Mirani: 
Roy. Soc. (B), 1906, 198:413-45, pls. 25-28. 
“See Seward, A. Co Fossil) Plants) 1017, 3:5 2a555) SCOtt Dem otiudies 
in Fossil Botany, Pt. II, 1900, p. 396—401. 
> Nathorst, A. G., Handl. k. Svenska Vetenskaps-Akad., 1902, 36, no. 3, 
15-17, pls. 1, 2. See Seward, A. C., Fossil Plants, 1910, 2:537, fig. 355. 
