Index to Vols. 
Digitalis purpurea, pollination and respira- 
tory activity, 21, 492. 
Dimorphotheca pluvialis, seedling-structure 
(*), 28 , 318. 
Dioon edule, seedling-structure (*), 23 , 446. 
Diospyrus virginiana, anatomy of leaf-fall, 
25 , 76. 
Diplanthera, stem-anatomy (*), 28 , 643, 646. 
Dipteris, sporangia (*), 29 , 516 ; sporophyll 
(*), 29 , 510. 
— conjugata and Lobbiana, ontogenetic de- 
velopment of stele (*), 25 , 761. 
Dischidia rafflesiana, symbiosis with ants, 24 , 
462. 
Dischisma arenarium, seedling anatomy, 26 , 
439 - 
Discs of Ulvaceae, attaching (*), 26 , 403. 
Distribution of species in New Zealand (*), 
30 , 437 ; in woods of north-east Kent 
(*), 25 , 857. 
Doodia, phylogeny (*), 28 , 401. 
Doubling of embryo-sac, pollen-tube, and 
embryo in Lychnis, 26 , 243. 
Doyle, J. : Note on the Structure of the 
Ovule of Larix leptolepis (*), 30 , 193. 
— On the Proliferous Form of the Scape of 
Plantago lanceolata (*), 30 , 353. 
Draba Aizoon, seedling-anatomy (*), 28 , 716. 
Drew, G. H. : The Reproduction and Early 
Development of Laminaria digitata and 
Laminaria saccharina (*), 24 , 177. 
Drosera, vegetative propagation (*), 29 , 308. 
Drimys, spp., anatomy, 22 , 667 ; 29 , 31 1 ; 
traumatically induced structures (*), 30 , 
359 - 
Dummer, R. A. : A Bisexual ‘ Gymno- 
spermous’ Begonia (*), 26 , 1123. 
— Grape Sugar as an Excretion of Platy- 
cerium (*), 25 , 1205. 
— Peloria in Saintpaulia ionantha, Wend- 
land (*), 26 , 946. 
Duthie, A. V.: Anatomy of Gnetum afri- 
canum (*), 26 , 593. 
Dutt, C. P. : Pityostrobus macrocephalus, 
L. and H. A Tertiary Cone showing 
Ovular Structures (*), 30 , 529. 
Dysmorphococcus variabilis, n. gen. et sp., 
description (*), 30 , 151. 
E. 
Eames, A. J. : On the Occurrence of Centri- 
petal Xylem in Equisetum (*), 23 , 587. 
— On the Origin of the Herbaceous Type 
in the Angiosperms (*), 25 , 215. 
— The Morphology of Agathis australis (*), 
27 , 1. 
Eastwood, A. : see Sutherland, G. K. 
Ecballium Elaterium, structure (*), 29 , 582. 
Echinocactus, spp., seedling-structure (*), 
24 , 150. 
— Wislizeni, water balance (*), 26 , 72. 
Echinocereus, spp., seedling-structure (*), 
24 , 143. 
XXI-XXX. 1 1 
Echinopsis, spp., seedling-structure (*), 24 , 
143 , * 49 - 
Elaeagnus, morphology of root-tubercles (*), 
26 , 1 19. 
Elaioplasts (*), 23 , 63. 
Elaphomyces, description (*), 23 , 248. 
— spp. , description (*), 23 , 248. 
Electrical conditions, respiration of plants 
under various (*), 28 , 135. 
— response and germination, seed testing by, 
30 , 181. 
in cotton plants (*), 27 , 103. 
Electrolytes as criteria of antagonistic ion- 
action, exosmosis of (*), 29 , 349. 
Elephantiasis of banana caused by Ustilagi- 
noidella oedipigera (*), 25 , 363. 
Elettaria Cardamomum, seedling-anatomy 
(*), 29 , 209. 
Ellis, D. : On the Constancy of Cilia- 
insertion in Bacteriaceae, 21 , 137. 
Embryo, morphology of monocotyledonous, 
particularly that of the grass (*), 30 , 509. 
— of Cephalotaxus drupacea (*), 21 , 1 ; of 
Cupressineae (*), 21 , 281 ; of Libocedrus 
decurrens (*), 21 , 281 ; of Penaeaceae (*),- 
23 , 363 ; of Pseudotsuga Douglasii (*), 
23 , 163 ; of Sciadopitys verticillata (*), 24 , 
403. 
— and seedling in the Gramineae, compara- 
tive morphology (*), 29 , 161. 
— gametophytes, and fertilization of Cepha- 
lotaxus drupacea (*), 21, 1. 
— of Hordeum, amyloclastic secretory capa- 
city, 25 , 8 1 1. 
— secretions, starch liquefying and sacchari- 
fying properties, 25 , 1154. 
Embryo-sac of Pandanus, 22, 330 ; 25 , 773 
(*) ; of Penaeaceae, 22, 329 ; 23 , 363 (*) ; 
of Protea Lepidocarpon, 23 , 161. 
— mother-cell of Lilium, heterotypic mitosis 
(*), 23 , 343. 
Encephalartos Altensteinii, seedling-structure 
(*), 23 , 449- 
Endemic flora of Ceylon (*), 30 , 1. 
— species, 30 , 558. 
Endemism and the Mutation Theory, 30 , 
551 - 
Endocalyx, the genus, 22 , 389. 
— spp., descriptions (*), 22, 390. 
— cinctus, n. sp., description (*), 22, 394. 
Endoconidia of Thielavia basicola (*), 29 , 
483. 
Endodermis in stem of Hippuris, origin of 
(*), 30 , 91. 
Endosperm ot Gramineae, vitality and self- 
digestion, 22, 449. 
Endospermic respiration of seeds, 22, 415. 
Entorhiza Cypericola, life-history (*), 24 , 
520. 
Enzymes of Panama disease, 25 , 357. 
Ephedra, anatomy and morphology of bract 
(*), 26 , 955 ; female strobilus (*), 26 , 957, 
976; flower (*), 26 , 955; inflorescence 
