Index to Vo/s. XI-XX. 
Phaseolus multiflorus, proteases of seeds, xx. 
1 15? n 8 . 
■ — vulgaris, proteases of seeds, xx. 1 16, 118. 
Phialea verpoides , description, xi 294. 
Phillips, R. W. — On the Development 
of the Gystocarp in Rhodymeniales, I 
(Plates XVII and XVIII), xi. 347. 
— Id. II. Delesseriaceae (Plates XV and 
XVI), xii. 173. 
— The Form of the Protoplasmic Body in 
certain Florideae, xii. 569. 
Philocopra cunvicolla, description (*), xv. 
337 - 
pleiospora, description^*), xv. 338. 
— setosa , description (*), xv. 336. 
Philodendron, ovule, xiv. 1 3. 
Phloem of Helianthus annuus, lignification, 
xvi. 180; xx. 319. 
Phlomis grandiflora, n. sp ., description, xix. 
441. 
— imbricata , description, xix. 441. 
— lunariaefolia , description, xix. 440, 441. 
— lunarifolia, description, xix. 440 ; species 
confused with it, xix. 439. 
Phoenix dactylifera, enzyme-secreting cells 
of, in seedling (*), xviii. 267 ; incapacity of 
endosperm for self-digestion, xx. 61 ; 
seedling-structure, xvii. 49. 
Phormium tenax var. atropurpurea, raphides 
(*), xii. 149. 
Photosynthesis, action of chloroform on, xii. 
415 ; effect of temperature on, xvi. 591. 
— and translocation, static diffusion of gases 
and liquids in relation to, xiv. 537. 
— in Ulva latissima, effect of salts on, xv. 39. 
— of marine Algae, effect of nitrates on, xv. 
669. 
Phragmidium violaceum, aecidium develop- 
ment (*), xviii. 338 ; mycelium (*), xviii. 
335? 34 2 ; promycelium (*), xviii. 327 ; 
spermogonia, xviii. 335 ; teleutospore (*), 
xviii. 327? 343- 
Phycomyceteae, coprophilous, xvi. 76. 
Phycomycetes, sexuality of, xiii. 576. 
Phyllocactus, morphology of embryo and 
seedling (*), xii. 446. 
Phyllocladus alpinus, affinities, xx. 262 ; 
female cone (*), xx. 261 ; male cone (*), 
xx. 262 ; vegetative organs, morphology 
(*), xx. 260. 
Phylloglossum, imperfect sporangia of, xv. 
228. 
Phyllophora and Actinococcus (*), xiii. 253. 
Phyllotaxis, note on (*), xv. 481 ; principles 
of (*), xviii. 227. 
Phylogeny of Angiosperms, xx. 173; Cac- 
taceae, xii. 469; Conjugatae (*), xii. 54; 
Gutleria, xii. 103 ; Cyperaceae, xx. 24 ; 
Hymenophyllaceae, xiv. 48 r ; Monocotyle- 
dons, xvii. 1; xx. 173, 414; Uredineae, xix. 
44 » 
Phytolacca decandra, digestion by leaves, 
xix. 159. 
29 
Phytophora infestans, mode of obtaining, xx. 
334 - 
Phytoplankton of Thames, xvi. 576; xvii. 
631 ; xix. 163. 
Picea excelsa, archegonia abnormal (*), 
xvii, 364; archegonium development (*), 
xvii. 357 ; fertilization (*), xvii. 362 ; male 
gametophyte, development (*), xvii. 353 ; 
maturation of egg (*), xvii. 360 ; proem- 
bryo formation (*), xvii. 363 ; ventral 
canal-cell, formation (*), xvii. 359. 
Pigment in Jacobinia, appearance of a 
brilliant, after injury, xix. 167. 
Pilobolus, cell-division in sporangia (*), xiii. 
490. 
Pilocereus, morphology of embryo and seed- 
ling (*), xii. 449. 
Pinus, a proliferous cone of (*), xvii. 779. 
— development of pollen-tube and division 
of the generative nucleus (*), xv. 193. 
— histology of sieve-tubes (*), xv. 575; 
albuminous cells (*), xv. 600 ; callus, 
origin (*), xv. 597 ; callus rods, formation 
(*), xv. 590 ; callus, value, xv. 605; con- 
necting threads, function, xv. 603 ; sieve- 
plate, development (*), xv. 588, 594 ; 
slime-strings, function, xv. 603. 
— excelsa, vascular system of female flowers 
(*)? xiii. 537 - 
— Gerardiana, seedling-structure, xx. 473. 
— montana var. gallica, seedling-structure, 
xx. 473. 
— Murrayana var. Sargenti, seedling-struc- 
ture, xx. 472. 
— Strobus, archegonium development (*), 
xv. 436 ; central cell, division (*), xv. 
439 ; conjugation of sexual nuclei (*), xv. 
447 ; fertilization (*), xv. 447 ; matura- 
tion of egg (*), xv. 442 ; oospore, first 
division in (*), xv. 449 ; proteid vacuoles 
(*), xv. 459 ; segmentation nuclei, division 
(*), xv. 455; sexual nuclei, conjugation 
(*), xv. 447 ; sperm nucleus, fate of, xv. 
464 ; stalk-cell, fate of (*), xv. 464 ; vege- 
tative nucleus, fate of (*), xv. 464 ; ventral 
canal-cell (*), xv. 441. 
— sylvestris, seedling-structure, xx. 473; 
vascular system of female flower (*), xiii. 
536 . 
— Thunbergii, seedling-structure, xx. 473. 
Piperaceae and Araceae, comparison, xx. 4 17. 
— seedling-structure (*), xx. 162. 
Piperales, seedling-structure, xx. 161. 
Piper cornifolium, seedling-structure (*), 
xx. 162. 
— geniculatum, seedling-structure, xx. 164. 
Pistia stratiotes, floating apparatus in leaves 
xiii. 466. 
Pisum sativum, proteases of seeds, xx. 116, 
1 1 8. 
Pitchers of Dischidia rafflesiana, evolution 
(*), xvi. 365 ; of Dischidia Shelfordii, 
xvii. 617. 
