126 GYMNOGUAMME, § KUG YM XOGRAMME. 



Anogramme, Fee. Eriosorus, Fee [in part). Dictyogramme, 

 Pr. Jamesonia, Fee and others [in jjai't). 



Sori ol)long or linear, generally linear and very much elon- 

 gated, copious, simple or forked or variously anastomosing 

 arising from the veins or from the cellular portion of the frond. 

 • — Ferns of very varied forms and habit, with veins simjile or 

 forked or anastomosing. 



The iiulividuals often present so many intermediate passages that it appears 

 more simple for practical purposes to include all the following under one genus 

 rather than brealc it up into numerous genera, regarding the value of which no 

 two systematic authors are agreed. Respecting those two on which the opinions 

 of botanists are the most united, Grammitis (" capsulae venis frondis furcatis in- 

 sidentes ") and Gymnogramme (" sori ohlongi vel suhlineares, recti costfe paralleli, 

 V. ohliqui venulis insidentes"),the characters present no valid distinctions whatever. 

 Presl indeed places them in two separate sections : so different are the views of 

 different botanists on these subgenera. Moore places them in one and the same sec- 

 tion, and distinguishes Gymnoijramme by " sori linear forked distinct," and Gram- 

 mitis by " sori linear oblong simple." I prefer the name Gymnogramm.e (to Gram- 

 mitis) as more characteristic, and that which already includes the greatest number 

 of species. It has been already shown that several Polypodia, as now- considered, 

 have been formerly ranked under Grammitis. There is a gradual passage be- 

 tween rounded and oblong sori. 



§ 1. EuGYMNOGRAMME. — Veins free. Sp. 1-42. 

 * Fronds simple. Sp. 1-3. 



1, G. (Eugymnogramme) reniformis, Mart.; caudex short 

 thick subtuherous j^aleaceous above with subulate ferrugin- 

 ous scales, stipites tufted 3-6 inches long ebeneous, fronds 

 \\ inch long rather more broad coriaceous reniformi-rotun- 

 date subcrenate, veins approximate flabellately dichotomous, 

 sori simple linear parallel confluent forming a broad belt 

 or zone some distance from the margin on the disk of the 

 honQ\.—Mart. Ic. PL Crypt. Braz. p. 88. t. 26. Hook. 2d 

 Cent, of Ferns, t. 9. Pterozonium, Fee, Gen. Fit. p. 178. t. 16. 

 A. Moore. 



Hab. Dense woods, Brazil, Mount Cnpati, near the river Japura, Martins. Near 

 Tarrapota, eastern Peru, on Mount Guayrapurimai Spruce, 1856, very rare. — If 

 every different form of Gymnogramme is to constitute a genus, of course there will 

 be as many genera as species. 



2. G. (Eugymnogramme) pumila, Spr. ; caudex filiform 

 creeping, fronds densely tufted 1^-2 inches long sparingly 

 setaceo-paleaceous at the base, sessile membranaceous nar- 

 row flabelliformi-cuneate much attenuated below palmately 

 and irregularly inciso-dichotomous at the apex, veins flabel- 

 lato-dichotomous disappearing below the apex, sori linear 

 elongated not mifrequently (as are the veins) forked at length 



