324 ANGIOPTERIS LONGIFOLIA, 
catæ, petiolulatæ, petiolis fere 0,002 vel 0,035 æquantibus, in aliis 
brevioribus, squamuloso-pilosis, lanuginosis, vel demum glabris. Struc- 
tura pinnularum est membranacea, superne opacæ sunt atque glaberrimæ, 
costa proëminente atque venis primariis conspicuis. Dorsum pallidius 
est propter pulverem subtilissimum tenacissime adhærentem, quo tota 
fere illa superficies inter venulas obtegitur, Costa ibi prominet, badii 
coloris et hic illic fusca lanugine tecta. Venulæ sunt alternato-pinnatæ, 
badiæ, inde ab origine ex costa jam furcatæ, aliæ vero primum sim- 
plices demum furcatæ, aliæ simplices sunt; omnes in marginem, ut 
videtur, abeunt. Venulæ secundariæ ex dentis crenæve sinu aliæ ad 
costam, aliæ ad furcaturæ alam decurrunt (Zu-angiopteris, Presl, Suppl. 
Tent. Pterid. p. 19). Sunt hæ tenuissimæ, nudæ, badiæ. Basis utrinque 
rotundata est, latere superiore minore, inferiore majore. Sori ad 0,001 
distantiam a margine sunt remoti, nunquam contigui, oblongi, fere 
0,002 longi. Sporangia sunt ovata vel obovata, alterna 9-10-11 vel 
pauciora, in soris acuminis 3—5na. 
Angiopteris longifolia, Grev. et Hook., was first described by those 
‘authors in 1833 (l. c). They remark that, “if examined with a 
little attention, it can never be confounded with the 4. evecta, Hoffm.” 
Notwithstanding, the species has hitherto been confounded by all the 
botanists who have since made investigations on the subject. 
It is not easy to say what Angiopteris evecta, Hoffm.,is. I have had 
the very rare advantage of seeing all the specimens in the different 
herbaria of England and the Continent, in which I thought I might find 
specimens of plants of the small tribe Marattiacee (except only the 
Royal Herbarium at Leyden, under the direction of Dr. Blume). 
But I have not been fortunate enough to ascertain which plant must 
be considered as the species in question. My much-lamented friend, 
Professor Gust. Kunze, of Leipsic, informed me in the spring of this 
year, a few days before his death, that he had just received the type- 
specimen of Forster, from Sprengel's herbarium. But it is not im- 
probable that there are among the Forsterian specimens very different 
forms belonging to different species. The Banksian specimens are 
probably those of Forster, and have not the least resemblance to 
Hoffmann's figure of Angiopteris evecta (Polypodium evectum, Forst.). 
. It must be here remarked that a considerable number of specimens of 
: Angiopteris, originally from the Society Islands, belonging to the most 
different species according to my researches, are to be found in the 
