[25] The species Cycas taiwanensis was founded by Mr
Carruthers (93) on material from Formosa, and C. revoluta has also been recorded from Formosa [Thiselton-Dyer (02) p. 559], but
according to Mr Elwes it is very doubtful whether any native Cycad occurs on the island.
[142] In his account of the ovule of Stangeria Lang
(00) discusses the possibility of homologising the ovule with a sorus consisting of one sporangium.