INDEX AND GLOSSARY 



Abortive. Imperfectly developed. 128. 



Absorption, by root, 232 ; selective, 232. 



Acaulescent. Stemless, or apparently so. 56. 



Accumbent (cotyledon). Having the edges 

 against the radicle. 



Achene. A small, dry, hard, 1-celled, 1- 

 seeded, indehiscent fruit. 149. 



Acicular. Slender, needle-shaped. 



Actinomorphic, 128. 



Aculeate. Prickly, beset with prickles. 



Acuminate. Tapering at the end. 94. 



Acute. Terminating in a sharp or well-de- 

 fined angle. 94. 



Adaptation, types of, 64. 



Adnate. United, as the inferior ovary with 

 the calyx tube. Adnate anther, one at- 

 tached for its whole length to the inner or 

 outer face of the filament. 135. 



Adnation, 115. 



Adventive. Kecently or Imperfectly natural- 

 ized. 



^Estivation. Arrangement of parts of peri- 

 anth in bud. 138. 



A late. Winged. 



Albumen, 18. 



Albuminous seeds, 18. 



Albuminous substances, formation of, ! 236. 



Algae, blue-green, 170 ; brown, 17T ; green, 

 171 ; red, 180 ; unicellular, 157. 



Alternate. Not opposite to each other, as se- 

 pals and petals, or as leaves on stem. 90. 



Alternation of generations, 207. 



Alveolate. Honeycombed; having angular 

 depressions separated by thin partitions. 



Ament. A catkin, or peculiar scaly unisexual 

 spike. 141. 



Amphitropous (ovule or seed). Half inverted 

 and straight, with the hilurn lateral. 138. 



Amplexicaul. Clasping the stem. 



Anastomosing. Connecting by cross veins 

 and forming a network. 



Anatomy of phanerogams (ch. xvii.), 212. 



Anatropous (ovule). Inverted and straight, 

 with micropyle next the hilum. 138. 



Androecium, 109. 



Androgynous (inflorescence). Composed of 

 both staminate and pistillate flowers. 



Angiospermous. Having seeds borne wilhin 

 a pericarp. 



Angiosperms, 107. 



Annual. Of only one year's duration. 44. 



Anther, 108. 



Antheridial tubes, 189. 



Antheridium, 176, 179, 203. 



Antherozoids, 176, 178, 179. 200, 206. 



Anthesis. Time of expansion of a flower. 



Apetalous. Without petals. 129. 



Apiculate. Ending in a short, pointed tip. 



Apothecium, 190. 



Arachnoid. Cobwebby ; of slender entangled 

 hairs. 



Archegouium, 201, 203, 206. 



Arcuate. Moderately curved. 



Areolate. Marked out into small spaces; 

 reticulate. 



Aril, 152. Arilate, having an aril. 



Aristate. Having an awn, or slender, bristle- 

 like termination. 94. 



Articulate. Jointed ; having a node or joint. 



Ascent of sap, 233. 



Ascomycetes. 190. 



Ascus, 190, 191. 



Aspergillus, 192. 



Assimilation, 234; carbon, 72; (Exp. 11), 

 66. 



Assurgent. Ascending. 



Attenuate. Slenderly tapering; becoming 

 very narrow. 



Auriculate. Having an ear-shaped append- 

 age. 93. 



Awl-shaped. Narrowed upward from the 

 base to a slender or rigid point. 



Awn. A bristle-shaped appendage. 



Axil, 29. 



Axile placentation, 105. 



Axillary. Situated in an axil. 29. 



Baccate. Berrylike ; pulpy throughout. 

 Bacteria, 160, 184 ; practical study, 256. 

 Barbed. Furnished with rigid points or 



bristles, usually reflexed like the barb of 



a fishhook. 



Barbellate. Finely barbed. 

 Bark, anatomy of, 225 ; falling of old layers, 



226. 



Basidiomycetes, 163, 194. 

 Basidium, 195. 

 Bast fibers, 219. 

 Batrachospermum, 180. 

 Berry, 149. 



Bidentate. Two-toothed. 

 Biennial. Of two years' duration. 45. 

 Bifid. Two-cleft. 

 Big Trees, 63. 

 Bilabiate. Two-lipped. 

 Bilocellate. Having two secondary cells. 

 Biloculate. Two-celled. 

 Bladderwort, 89. 

 Blade, 73. 



Blue-green Alga?, 170. 

 Books of reference, 244. 255. 

 Bract. A more or less modified leaf sub- 



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