Index to Vo/s. XI-XX. 
Anemia, comparative anatomy of species of 
(*), xv. 385 ; habit, xv. 379 ; petiole- 
structure and node (*), xv. 382 ; root- 
structure, xv. 385 ; seedling anatomy (*), 
xv. 388 ; stem-structure (*), xv. 379. 
— hirsuta, anomalous leaf of, xv. 765. 
Anemone coronaria, seedling-structure, xvii. 
56. 
Angiopteris evecta, arrangement and struc- 
ture of the vascular strands (*), xvi. 371 ; 
leaf-structure (*), xiv. 5 T9; morphology 
(*), xiv. 501 ; root-structure (*),xiv. 516 ; 
secondary thickening (*), xvi. 173, 388 ; 
stem-structure, xiv. 505, 512. 
Angiosperm, Peperomia the most primitive 
type of, xv. 113. 
Angiosperms, double fertilization, xiv. 689 ; 
histology of sieve-tubes, xvii. 265 ; phylo- 
geny, xix. 457; xx. 173 ; sporangial integu- 
ments, morphology, xvi. 596 ; stomata, 
mechanism (*), xvi. 353. 
Anhalonium, morphology of embryo and 
seedling (*), xii. 462. 
Anixiopsis stercoraria, description (*), xvi. 
67. 
Anthericum Liliago, seedling-structure (*), 
xvii. 29. 
Antheridia of Grinnellia americana (*), xi, 
12 ; of Helminthostachys zeylanica (*), 
xvi. 38 ; of Ophioglossum pendulum (*), 
xvi. 29. 
Antherozoids of Chara (*), xviii. 245 ; Dic- 
tyota (*), xii. 545 ; Fegatella conica, 
explosive discharge (*), xvii. 270 ; Gymno- 
sperms, xi. 344 ; Taonia (*), xi. 545. 
— of ferns, chemotaxis, xiv. 543 ; physiology, 
xiv. 543 ; starch in vesicle, xiv. 579 ; swarm 
period, length of, xiv. 575 ; withdrawal 
of water from, xiv. 572. 
Anthoceros laevis, apospory in (*), xv. 503. 
— multiple chromatophores, xx. 322. 
Anthurium Bakerianum, seedling-structure, 
xvii. 2, 40, 4 5. 
— development of ovule (*), xiv. 12. 
- — violaceum var. leucocarpum, embryo (*), 
xix. 334 ; embryo-sac (*), xix. 331 ; endo- 
sperm (*), xix. 333 ; fertilization (*), xix. 
332; flower (*), xix. 330; ovule (*), xix. 
330 . 
Antipodal cells of Aglaonema (*), xiv. 11 ; 
Lysichiton (*), xiv. 15 ; Triglochin mari- 
timum (*), xiv. 99. 
Anti-ferment reaction in tropistic move- 
ments of plants, xix. 75. 
Antiseptics and proteases, xvii. 602. 
Antithamnion Plumula, cystocarp develop- 
ment (*), xi. 356. 
Aphanochaete, observations on species of (*), 
xvi. 403 ; classification, xvi. 409. 
Aplectrum hyemale, morphology (*), xiii. 6 ; 
mycorhiza (*), xiii. 7 ; structure of vegeta- 
tive organs (*), xiii. 8, et seq. 
— spicatum, morphology (*), xiii. 6 ; myco- 
B 
3 
rhiza (*), xiii. 7 ; structure of vegetative 
organs (*), xiii. 8, et seq. 
Apogamy in Achlya americana var. cambrica, 
xiii. 147 ; ferns, xii. 251. 
Apogeotropic roots of Bowenia spectabilis (*), 
xii. 480. 
Apospory in Anthoceros laevis (*), xv. 503. 
Aquatic plants, action of cold and of sunlight 
upon, xii. 363. 
Aquilegia canadensis, embryology (*), xix. 
455 - 
Araceae and other Monocotyledons, relation 
between, xx. 424. 
— and Piperaceae, comparison, xx. 417. 
— development of flower and sexual organs 
(*), xiv. 1. 
— studies on the (*), xiv. 1 ; xvii. 665 ; xix. 
329. 
Arachniotus candidus, description (*),xvi. 62. 
— citrinus, n. sp., description (*), xvi. 62. 
Arachnomyces nitidus, n. sp ., description (*), 
xvi. 68. 
— sulphureus, n. sp., description (*), xvi. 68. 
— n. gen., description, xvi. 68. 
Araucariaceae, persistence of leaf-traces in, 
xv. 423, 547 ; vascular system of female 
flower (*), xiii. 527. 
Araucaria, wood of a Cretaceous plant allied 
to (* +), xx. 388 ; wound reaction (*), xx. 
338 . 
— Bidwillii, vascular system of female flow- 
ers (*), xiii. 532. 
— Cookii, vascular system of female flowers 
(*), xiii. 527. 
Araucarioxylon antiquum (+), primary wood, 
xiii. 617 ; secondary \yood, xiii. 618. 
— fasciculare (t), primary wood, xiii. 616; 
secondary wood, xiii. 617. 
Araucarioxylons, primary wood of (t), xiii. 
615. 
Arber, E. A. N. — On some species of La- 
genostoma : A T ype of Pteridospermous 
Seed from the Coal Measures (+), xix. 326. 
— On the Effect of Nitrates on the Carbon- 
Assimilation of Marine Algae, xv. 669. 
— On the Effect of Salts on the Assimilation 
of Carbon Dioxide in Ulva latissima,xv. 39. 
— On the Past History of the Ferns (one 
text-figure) (+), xx. 215. 
— On the Roots of Medullosa anglica 
(Plate XX) (f), xvii. 425. 
Arceuthobium occidentale, dissemination (*), 
xix. 100; germination (*), xix. 104. 
Archangiopteris Henry i, histology, xix. 
266; leaf-morphology (*), xix. 260; sori and 
sporangia, xix. 269 ; stipule-structure (*), 
xix. 266 ; vascular system of petiole (*), 
xix. 262 ; vascular system of stem (*), 
xix. 261. 
Archegonia of Helminthostachys zeylanica 
(*), xvi. 39; Ophioglossum pendulum (*), 
xvi. 30 ; Pinus Strobus, development (*), 
xv. 436; Tsuga canadensis (*), xiv. 583. 
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