INDEX. 



Page. 



Abutilon 37S 



Acalypha 271 



Ac-cum-bent, leaning or lyging upon, applied to cotyledons when the caulicle (radicle) is folded 



against their contiguous edges. 

 A-chene, achenium, a small, dry, one-seeded, indehiscent fruit, likely to be mistaken for a seed. 



Achillea 414 



Achnida 324 



Acute, ending in a distinct angle, less than 90°, but not prolonged 



Adulterate seeds 281, 282 



Agrimony 356, 357 



Agropyron 289 



Agrostemma 330 



Aizoaceae 329 



Alfalfa 362, 369 



Allionia 328 



Allium 304 



Alsike clover 365 



Alsine 337 



Alyssum 343, 344 



Ambrosia 415 



Amaranthus blitoides 324 



Amaranthus chlorostachys 325 



Amaranthus graecizans 225 



Amaranthus hybridus 325 



Amaranthus retroflexus 326 



Amaranthus spinosus 326 



American jute 378 



Anacardiaceae 377 



Apocynaceae 388 



Apocynum ." ' 388 



Apple-of-Peru 403 



Apple of Sodom 404 



Arctium 417, 418 



Arenaria 331 



Artemisia 414 



Artichoke 414, 431 



Asclepiadaceae 389 



Asclepias 389 



Aster family 414 



Atriplex 316 



Avena 290 



Axyris 317 



Baking seeds 281 



Ball mustard 353 



Barbarea vulgaris 343 



Barbed, furnished with rigid points or short bristles, usually reflexed like the bard of a fish hook. 



Barnyard grass 297 



Barren brome grass 293 



Bearbind 390 



Beaver poison 384 



Beggar-ticks 420, 421 



Bellbine 390 



Bermuda grass 294 



Berteroa 344 



Beaked nightshade 405 



