622 



FILICES. 



7. Male organ from an adult fertile frond, shewing that 

 they are not subsequently submitted to change of form. 



The curious coloration, which invariably follows the inter- 

 cellular lines, is inexplicable, it generally is developed from 

 above downwards, where it becomes ramified as it were 

 among the cells, whenever the base is broad. In this plant 

 it is not complete in the uppermost cells for a long time ? but 

 passes off towards these, gradually into a lightish yellowish 

 brown coagulum. Otipore April 13th. 1840. 



PoJypodii sp. — Stipite infra glabro, superne canaliculato, 

 supra velulino. Fronde 1 pinnata, 3 pedali, pinnis alternan- 

 tibus subsessilibus, oblongis longe caudatis basi rotundatis 

 serratis, repandisque ? utrinque secus venas primarias pin- 

 narum pubescens, venatio unita omnino ut in Meniscuis nuper 

 discriptis in venularum summarum apicibus cum margine 

 cartilagineo coalescentibus. 



Sori rotundati, quoad interstitia venarum secondariarum bi. 

 seriati, medium versus venularum tertiarum impositi his vena- 

 rum infimarum saepe confluentibus. 



Cum praecedentibus, in January 24, 1836. //. Ass. 332. 



Aspidii sp. — Stipite sub 4 gono, intro pinnas pubescente et 

 subflexuoso fronde 3-3 J pedali pinnata. Pinnis subsessilibus 

 linearibus acuminatis, profunde dentatis, consistentia foliacea. 



Venatio unita: ideoque tertiarias simplices in partibus, 

 liberis frondis sori lobulis clavatim intromarginem desinunt, 

 caeterum confluunt vere compositi brev. 



Sori his tertiariis medium versus impositi rotundati. 



Indusium generis ? 



Cum Meniscium 333, in Jan. 24, 1836. It. Ass. 334. 

 The compound vein with the exception of that part arising 

 from the union of the lowermost tertiary veins is irregular, 



