410 ETYMOLOGY. 



Allantodia, allantos, a sausage ; indusium like a sausage. 

 AUosorus, alio, a heap, and sorus, in allusion to the crowded 



sori. 

 Alsophila, dlsos, grove, pldleo, to love ; grows in groves 



and shady places. 

 Amphiblestra, a word meaning the fronds are reticulated. 

 Amphidesmium, antphi, around, or on both sides, desmos, a 



band ; relating to the position of the sori to one 



another. 

 Anapeltis, ano, without, pelHs, shield ; the sori naked, in 



opposition to Pleopeltis. 

 Anchistea, agimti, kindred ; intermediate between Wood- 



ivardia and Doodia. 

 Anemia, aneimon, naked ; naked spikes of fructification. 

 Anemidictyon, veins reticulated ; not free as in Anemia. 

 Anetium, probably fi'om the Greek anaitos, guiltless. This 



is perhaps meant to indicate that A. cUrifolium has 



been put wrongfully to Acrodiclmm. 

 Angiopteris, angio, open, pier is ; the open sporangia. 

 Antigramma, anli, opposite, gramma, a line ; the linear 



sori being in pairs opposite to each other. 

 Antrophyum, antrum, a den or hollow ; the receptacles of 



sporangia being in a groove or channel. 

 Arthrobotrya, arthron, joint, hotrijs, bunch ; the segments 



articulate with the rachis, thus differing from Pohj- 



hofrya. 

 Arthromeris, arthron, joint, meris, parts ; the pinnas arti- 

 culate with the rachis. 

 Arthropteris, arthron, joint, pteris ; the frond and pinna3 



being articulate. 

 Aspidium, aspldos ; the indusium being like a buckler or 



shield. 



