Index to Vo Is. XI -XX. 15 
Geoglossum australe , description (*), xi. 247. 
— Barlae, description, xi. 251. 
— carneum , description, xi. 270. 
1 — cucullatum , description (*), xi. 276. 
— di forme, description, xi. 248. 
— Farlowi, description, xi. 243. 
— - — f. leotioides, description (*), xi. 244. 
f. velutipes, description, xi. 243. 
— flavum, description (*), xi. 256, 275. 
— glabrum, description (*), xi. 246. 
f. difforme, description, xi. 248. 
>■ var. lignicolum, description (*), xi. 250. 
— glutinosum, description (*), xi. 245, 250. 
— ■ — f. minor , description (*), xi. 245. 
— Heuflerianum, description, xi. 253. 
— hirsutum description (*), xi. 241. 
f. americanum, description, xi. 242. 
f. Walteri, description (*), xi. 243. 
•var . americanum , description, xi. 242. 
-var. leotioides , description (*), xi. 
244. 
— Hookeri , description (*), xi. 267. 
— lignicolum , description (*), xi. 250. 
— luteum , description (*), xi. 275. 
— microsporium , description (*), xi. 282. 
var. tremellosum , description, xi. 283. 
— Miilleri, description (*), xi. 245. 
— multiforme , description (*), xi. 281. 
— nigritum , description, xi. 249. 
— olivaceum , description, xi. 270. 
var. purpureum, description, xi. 270. 
— ophioglossoides , description (*), xi. 247. 
var. sphagnophilum , description (*), 
xi. 247. 
— Peckianum, description (*), xi. 250. 
f. Barlae, description, xi. 251. 
f. umbratile, description, xi. 251. 
— pistillaris, description (*), xi. 275. 
— pumilum, description (*), xi. 252. 
— purpurascens, description (*), xi. 266. 
- — rufum , description (*), xi. 275. 
• — simile , description (*), xi. 247. 
— sphagnophilum , description (*), xi. 247. 
— tremellosum , description, xi. 283. 
— umbratile , description, xi. 251. 
— velutipes , description, xi. 244. 
— viride, description (*), xi. 269. 
— viscosulum, description (*), xi. 252. 
— viscosum, description (*), xi. 245. 
— vitellinum, description (*), xi. 273. 
— Walteri , description (*), xi. 243. 
Geological history of British Flora, xii. 243. 
Geonomaoxycarpa,seedling-structure,xvii.49. 
Geophilous habit of Peperomias (*), xx. 416. 
Geotropic response at various angles of 
inclination, xix. 311. 
intensity of response at equal angles 
above and below the horizontal, relative, 
xix. 319. 
— — maximum response of primary roots 
and shoots, angle for, xix. 311. 
— stimulation, position of maximum, xix. 
569. 
Geotropism and localization of sensitive 
region (*), xiii. 567. 
— the gravitation stimulus in relation to 
position, xiii. 620. 
Germ cells, distribution of parental charac- 
ters to, xix. 246. 
Germinated seeds, proteases of, xx. 115. 
Germinating seeds, proteolytic action, xvi. 1 o. 
Germination, influence of light upon (*), xx. 
453 . 
— of Arceuthobium occidentale (*), xix. 
104 ; of Bromes, xvi. 257 ; of Cactaceae 
(*), xii. 429 ; of conidia of Pythium 
ultimum (*), xv. 276; of melon, pre- 
cocious (*), xvi. 149 ; of oospores of 
Achlya americana var. cambrica (*), xiii. 
143, 162 ; of oospores of Gutleria (*), xii. 
85 ; of oospores of Pythium ultimum, xv. 
282; of pollinium cells of Asclepias Gor- 
nuti (*), xvi. 138 ; of seeds of Bertholletia 
excelsa (*), xv. 99 ; of spores of Bacillus 
hirtus (*), xx. 236; of spores of copro- 
philous Fungi, xv. 314 ; of spores of Fega- 
tella conica (*), xviii. 114; of spores of 
Fossombronia longiseta (*), xx. 88 ; of 
spores of Grinnellia americana (*), xi. 10; 
of spores of Ophioglossum, xx. 321 ; of 
spores of Peziza aurantia, xi. 339; of 
spores of Saccharomyces anomalus (*), xiv. 
225 ; of uredospores, xix. 12; of uredo- 
spores of Puccinia dispersa, xvi. 261 ; 
of zoospores of Aglaozonia (*), xii. 87 ; of 
zoospores of Oedogonium (*), xvi. 412. 
Germinative power of seeds, influence of 
the temperature of liquid hydrogen on, 
xiii. 599. 
Giesenhagen, K., and Gwynne-Vaughan, 
D. T. — Loxsoma Cunninghamii — A Cor- 
rection, xv. 433. 
Ginger Beer plant, xi. 341. 
Ginkgoaceae, fossil (* t), xiv. 135. 
Ginkgo biloba, cotyledons (*), xiv. 115, 
xvii. 789; diagnosis, xiv. 1 14 ; female 
flowers (*), xiv. 122 ; foliage leaves (*), 
xiv. 117 ; leaf-traces (*), xiv. 130; male 
flowers (*), xiv. T29; root-structure (*), 
xiv. 134; seedling-structure (*), xiv. 13 1 ; 
scale-leaves (*), xiv. 1 16 ; spermatozoids, 
xi. 344; stem-structure (*), xiv. 131 ; 
structure, &c. (*), xiv. 109. 
Gland-cells of Drosera, changes produced in 
by various food materials, xii. 560. 
Glasgow University, opening of new 
botanical department, xv. 551. 
Gleicheniaceae, anatomy of the (*), xv. 703. 
— stem-structure, xii. 624. 
Gleichenia, habit, xv. 704 ; node (*), xv. 
720; petiole, structure (*), xv. 713; 
rachis and pinnules, structure, xv. 726 ; 
rhizome, structure (*), xv. 705 ; root- 
structure (*), xv. 731 ; seedling-structure, 
xv. 733. 
— pectinata, structure (*), xv. 728. 
