156 



GLOSSARY AND INDEX.- 



Phanerophlebia, 117; also 16, 80. 



Phegropteris, 108; also 5, 9, 16, 27, 

 79. 



Phlebodium, 83; also la, 79. 



Phyllitis, 107; also 3, 6, 15, 19, z6, 81. 



Phymatodes, 83; also 79. 



Pilose (Lat. pilus, hairy), covered 

 with soft hairs. 



Pilularia, 124; also 39. 



Pinna (Lat. a feather), the primary 

 division of a compound frond. 



Pinnate (Lat. >i«k<s, a feather), hav- 

 ing: the divisions of the frond ar- 

 ranged on the two sides of a common 

 rachis. 



Pinnatifid (Lat. pinna, a feather 

 and findere, to cleave), having the 

 sides of the frond, pinna, or pinnule 

 cut half-way or more to the midvein. 



Pinnule (Lat. pinnula, diminutive 

 of pinna, a feather), the secondary 

 division of a frond twice or more 

 compound. 



Polypodiacese, n, 78. 



Polypodium, 81, also 6, 7, 10, 11, 

 12, 79. 



Polystlchum, 115 ; also 16, 80. 



Pro-embryo, the thread-like pro- 

 longation between the germinating 

 spore and the prothallium. 



Prothallium (Lat. pro, previous 

 to, and thallus, a young shoot), the 

 sexual generation of a fern, 20, 



Psilotum, 139 ; also 35. 



Pteridium, 91 ; also 80. 



Pteridoid (Gr. Trrepis, fern, and 

 etSos, form), fern-like in appearance. 



Pteridoid Phase, 22. 



Pteridophytes (Gr. irrepis, fern, 

 and ^vTor, a plant, 65. 



Pteris, 90 ; also 5, 13, 68, 80. 



Quadri- (Lat. quattuor, four), (as a 

 prefix) four, fourfold; 



Rachis (Gr. pcixis, the spine), the 

 continuation of the stipe through a 

 compound frond. 



Raphe (Gr. 'pa<^^, a seam or suture), 

 the ridge which connects the sporo- 

 carp with its stem in Marsilia. 



Rattlesnake-fern. Vide Bo- 

 tryohium. 



Receptacle (Lat. recipere, to re- 

 ceive), the part to which the sporan- 

 gia are attached, especially in the 



HVM ENOI'HVLLACE^. 



Reniform (Lat. renes, the kidneys), 



kidney -shaped. 

 Resurrection - plant. Vide 



Selaginella. 



ReVOlute (Lat. revolvere, to roll 



back), rolled backward j said of the 



margin of fronds. 

 Rhizocarps. Vide Marsilea. 

 Rhomboidal (Gr. 'f6\i.^a%, a rhomb, 



and eiSos, form), approaching a rhomb 



in shape. 

 Rock-brake. Vide Crypto- 



gramma. 

 Rock-moss. Vide Selagi- 



nella. 

 Roots, 25. 

 Rootstock, an underground stem. 



Salvlnia, 125; also 39, 40. 



Salviniacese, 125 ; also 39.— Litera- 

 ture of, 40. 



Scandent (Lat. scandere, to climb), 

 climbing, 



Schizsea, 76 ; also n, 18. 



Schizseacese, n, 75- 



Scolopendrlum. Vide Phyl- 

 litis. 



Scouring-rush. Vide Equl- 

 setum. 



Segment, one of the divisions of a 

 pinnatifid frond. 



Selaginella, 137 ; also 34, 33, 36. 

 Selaginellacese, 137 j also 34.— 



Literature of, 37. 

 Sensitive-fern. Vide Ono- 



olea. 

 Serrate (Lat. serra, a saw), having 



the margin cut into teeth pointing 



forward. 



