GLOSSARY AND INDEX. 



151 



Dimorphous (Gr. Si's, twice, and 



fLu)p<j>ri, shape, form), of two forms; 



said of ferns whose fertile fronds are 



unhke llie sterile. 

 Dioecious (Gr. Si«, twice, and oIko?, 



house), bearing- the male and female 



organs on different plants. 

 Distichous (Gr. Sts, twice, and 



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

 Distribution, Geographic, 62.— 



Geologic, 67. —Local. 4. 

 Dryopteris, no; also 2, 5, 7, 8, 10, 



II, 16, 26, 42,68, 73. 



Ebeneous (Lat. ebcnus, ebony), 

 black like ebony. 



Elater, the spirally coiled append- 

 ages of the spores of Equiscti<m. 



Endospore (Gr. ivhov, within, and 

 o-TTopd;, a seed), the inner wall of the 

 spore. 



Epidermis (Gr. cTrt, upon, and 

 5ep/j.a, the skin), the external covering 

 of the plant. 



Epiphytic (Gr. twi, upon, and 

 <^vt6v, 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, 69. 



Exospore (Gr. e^w, outside, and 

 (TTTopo?, a seed), the external covering 

 of the spore. 



Falcate (Lat./"rt/.t-, 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, Anificial Synopsis of genera 

 of, 80 — Mode of growth. 2.— Tim-; 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 {l^^t. flabellum, a fan), 

 fan-shaped; broad and rounded at 

 the summit and narrow at the base. 



Flaccid (Lat. Jlaccus, flabby), soft 

 and weak. 



Floating-fern. I'ide 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 Iso'etes 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-e, 30; of Eguisetinii, 

 33; of Club mosses, 35; of /soi'ics, 38; 

 of lilarsilia, 39; of Pilularia, 39; 

 of Azolla, 39; of Salvinia,, 40. 



Fulvous (Lat. fulvus^ reddish-yel- 

 low), tawny. 



Fungi, 4g.— Literature of, 56. 



Gasteromycetes, 52- — Litera- 

 ture of, 59. 

 Genera, 44- 

 Generic Names, 41- 

 Geographic Distribution, 62. 



■ — Literature of, 69. 

 Geologic Distribution, 65. 

 Germination of Ferns, 19; of 



Ofhioglossace/E, 30; of Eguisi'ium,! 



33; of Club-mosses, 36; of Isoi'tes, 38; 



of Marsilia, 40.— Literature of, 23. 

 Glabrous (Lat. glaber, smooth) 



smooth. 

 Glanduliferous (\.2,i. glandula^ a 



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



nished wiih glands 

 Glaucous (Gr. vAauKos, sea-green), 



covered with a bloom like a plum. 

 Globose, "spherical in form or nearly 



so. 

 Goethe on species, 43. ' 



