GLOSSARY AND INDEX. 



Dimorphous (Gr. Si's, twice, and 

 ju.top(|j, shape, form), of two forms; 

 said of ferns whose fertile fronds are 

 unlike the sterile. 



Dioecious (Gr. Si's, twice, and OIKOS, 

 house), bearing the male and female 

 organs on different plants. 



Distichous (Gr. Sis, twice, and 

 ort'xos, a row), disposed in two rows 



Distribution, Geographic, 60. 

 Geologic, 65. Local, 4. 



Dorsal (Lat. dor sum, the back), per- 

 taining to or situated on the back. 



EbeneouS (Lat. ebenus, ebony), 

 black like ebony. 



Elater, the spirally coiled append- 

 ages of the spores of Equisetum. 



Endospore (Gr. iv&ov, within, and 

 o-Tropds, a seed), the inner wall of the 

 spore. 



Epidermis (Gr. CTTI, upon, and 

 Sep/Lia, the skin), the external covering 

 of the plant. 



Epiphytic (Gr. CTTI, upon, and 

 fyvrov, a plant), growing upon an- 

 other plant, but not nourished by it. 



Equisetaceae, 132; also 31. Lit- 

 erature of, 34. 



Equisetum. 132 ; also 31, 33, 67. 



Exospore (Gr. efu, outside, and 

 o-Tropo?, a seed), the external covering 

 of the spore. 



Falcate (Lat. //.*, a sickle), scythe- 

 shaped ; slightly curved upward. 



Farinose (Lat. farina, ground 

 corn), covered with a white or yellow- 

 ish powder. 



Fern Allies, 28. 



Fern Structure, Literatureof, 28 



Ferns, Artificial Synopsis of genera 

 of, 80. Mode of growth, 2. Time of 

 fruiting, 4. Variation in, 2. 



Ferruginous (Lat. ferrum, iron), 

 resembling iron rust. 



Fertilization, 21. 



Fibrillose (Lat. fibra, a thread), 

 formed of small fibres. 



Filices, 75- 



Filiform (Lat. filum, a thread, 

 forma, form), thread-like. 



Flabellate (Lat. Jlabellum, a fan), 

 fan-shaped; broad and rounded at 

 the summit and narrow at the base. 



Flaccid (Lat. flaccus, flabby), soft 

 and weak. 



Floating-fern. Vide Cera- 

 topteris. 



Flowering-fern. Vide Os- 

 munda. 



Foliaceous (Lat. folium, a leaf), 

 having the nature of a leaf. 



Fovea (Lat. a small pit), the depres- 

 sion in the leaf of Isoetes containing 

 the sporangium. 



Frond (Lat. frons, a leafy bough), 

 that which answers to the leaf in 

 ferns, 8, 26. 



Fructification of Ferns, 10; of 

 OPHIOGLOSSACE^:, 30; of Equisetum, 

 33; of Club-mosses, 35; of Isoetes, 38; 

 of Marsilia, 39; of Pilularia, 39; 

 of Azolla, 39; of Salvinia, 40. 



Fulvous (Lat. fulvus, reddish-yel- 

 low), tawny. 



Fungi, 47. Literature of, 52. 



Gasteromycetes, 50. Litera- 

 ture of, 55. 



Genera, 44- 



Generic Names, 41. 



Geographic Distribution, 60. 

 Literature of, 67. 



Geologic Distribution, 65. 



Germination of Ferns, 19; of 

 OPHIOGLOSSACE.E, 30; of Equisetum, 

 33; of Club-mosses, 36; of Isoetes, 38; 

 of Marsilia, 40. Literature of, 23. 



Glabrous (Lat. glaber, smooth) 

 smooth. 



Gland ul if erous (Lat. glandula, a 

 little kernel, and ferre, to bear), fur- 

 nished with glands. 



Glaucous (Gr. yAavKos, sea-green), 

 covered with a bloom like a plum. 



Globose, spherical in form or nearly 

 so. 



Goethe on species, 43. ' 



