ETYMOLOGY. 415 
Hymenodium, hymen, membrane; the character of the 
frond. 
Hymenolepis, hymen, membrane, lepis, a scale; membra- 
neous scales covering the fructification. 
Hymenophyllum, hymen, membrane, phyllon, leaf; “ Filmy- 
leaf Fern." 
Hymenostachys, hymen, membrane, síachys, a spike; the 
fructification on spikes. 
Hypoderris, hypo, under, derma, skin; the indusium under 
the sori, like a thin skin, 
Hypolepis, hypo, under, lepis, a scale; the sporangia under 
the indusium. 
Isoloma, isos, equal, Joma, a border or margin ; the indusium 
and margin equal, 
Jamesonia, in honour of Dr. Jameson, a zealous botanical 
collector, many years resident in Quito. 
Kaulfussia, in honour of D. G. F. Kaulfuss, of Halle, a cele- 
brated writer on Ferns. 
Lastrea, in compliment to Chev. de Lastre, a French noble- 
man, 
Lecanopteris, lekane, a basin, pteris; the sori on concave 
lobes. ) 
 Lepäcietie, lepis, scale, kistis, a cyst or cell; the sori being | 
.. immersed in scales, which form a cyst. | S 
Bes Leptochilus, leptos, slender, cheilos, lip; narrow ind : 
— Leptogramma, leptos, slender, gramma, a line; short linear = 
S pork 
.  Leucostegia, leukos, white, stegos, 
` being pale-coloured, approaching white. 
a cover; the indusium ` 
