GLOSSARY AND INDEX. 



Acrogenous (Gr. aKpov, the high- 

 est part, and ^ecrai', to produce), per- 

 taining to plants whose growth takes 

 place at the summit. Includes Ferns, 

 Mosses, etc. 



Acrostichum, 8i; also 5, 6, 12, yg. 



Aculeate (Lat. aculeus, diminutive 

 of acusy a needle), armed with 

 prickles. 



Adder-tongue, Vide Ophio- 

 glossum. 



Adiantum, 89; also 5, 13, 42, 80. 



Adnate (Lat. ad, to, nasci^ to be 

 born), growing fast to some other 

 portion of the plant. 



Algae, 56- 



Allosorus. Vide Crypto- 

 gram ma. 



Analogy (Gr. ava., according to; 

 AdY09, ratio, proportion), similarity in 

 function; distinguished from homolo- 

 gy^ indicating similarity in struc- 

 ture. 



Anastomose (Gr. acao-ro^oiii', to 

 open into), forming a network; said 

 of veins which unite with each 

 other. 



Anemia. Vide Ornithopte- 

 ris. 



Annul us (Lat. a ring), the ring 

 partly or completely surrounding the 

 sporangium, 



Antherldium (plu. antkeridld) 

 (Lat. anthera, an anther, and Gr. 



«'5o5, form), the part containing the 

 male element. 20. 



Antherozoid (Lat. anthera, an 

 anther; Gr. ^wov, an animal, and 

 ei'Sos, form), the male element of 

 cryptograms. 20. 



Archegonium (plu. archegojiia) 

 (Gr, a.px.'^, beginning, and ■yoi'^, ofE- 

 spring), the part containing the fe- 

 male element. 20. 



Arcuate (Lat. arcus, a bow), 

 curved like a bow. 



Areola (plu. areolee) (Lat. diminu- 

 tive of area, an open place), a space 

 enclosed by anastomosing veinlets. 



Asexual Reproduction in 

 Ferns, 27. 



Aspidium. Vide Dryopteris, 

 and Polystichum. 



Asplenium, 103; also 2, 3, 5, 6, 15, 

 27, 81. 



AuriCUlate (Lat. auricula, a little 

 ear), furnished with ear-like append- 

 ages. 



Azolla, 125; also 39. 



Beech-fern. Vide Phegop- 

 teris. 



Bi (Lat. iis^ twice), (as a prefix) two, 



twice or doubly. 

 Bladder-fern. Vide Filix. 

 Blechnum, 102; also 15, 81. 

 Botrychium, 68; also 2,3, 5, 19, 29, 



30, 43- 



