410 ETYMOLOGY. 



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

 Allosorus, allo, a heap, and sorus, in allusion to the crowded 



sori. 

 Alsophila, alsos, grove, phileo, to love ; grows in groves 



and shady places. 



Amphiblestra, a word meaning the fronds are reticulated. 

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



band ; relating to the position of the sori to one 



another. 

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



opposition to* Pleopeltis. 

 Anchistea, agnati, kindred ; intermediate between Wood- 



wardia and Doodia. 



Anemia, aneimon, naked ; naked spikes of fructification. 

 Anemidictyon, veins reticulated ; not free as in Anemia. 

 Anetium, probably from the Greek anaitos, guiltless. This 



is perhaps meant to indicate that A. citri 'folium has 



been put wrongfully to Acrostichum. 

 Angiopteris, angio, open, pteris ; the open sporangia. 

 Antigramma, anti, 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, botrys, bunch ; the segments 



articulate with the rachis, thus differing from Poly- 



botrya. 



Afthromeris, arthron, joint, wen's, parts ; the pinnse arti- 

 culate with the rachis. 

 Arthropteris, arthron, joint, pteris; the frond and pinna? 



being articulate. 

 Aspidium, aspidos ; the indusium being like a buckler or 



shield. 



