28 
A nnals of Botany . 
Parnassia palustris, ovary (*), xv. 186. 
Parthenogenesis in Cutleria (*), xii. 79 ; 
in Dictyotaceae (*), xviii. 196 ; in Dictyota 
dichotoma, xii, 559. 
Pathology, recent researches on plant, xix. 8. 
Pearson, H. H. W. — Anatomy of the 
Seedling of Bowenia spectabilis (Plates 
XXVII and XXVIII), xii. 475. 
— The Double Pitchers of Dischidia Shel- 
fordii, n. sp., xvii. 617. 
Pediastreae, evolution and polymorphism, 
xi. no. 
Pedicularis palustris, leaf-structure and ex- 
cretion of water, xi. 387. 
Peduncle of Cycadaceae, anatomy (* +), xi. 
399 * 
Peirce, G. J. — Studies of Irritability in 
Plants (Plate XXXV), xx. 449. 
— The Dissemination and Germination of 
Arceuthobium occidentale (Plates III and 
IV), xix. 99. 
Pelargonium rapaceum, morphology of 
flower, xiii. 181. 
Pelecyphora, seedling-morphology, xii. 464. 
Pellaea rotundifolia, structure (*), xvii. 695. 
Pellia epiphylla, the quadripolar spindle in 
spore-mother-cell of, xv. 431. 
— nuclear studies on (*), xv. 147. 
Penicillium as a wood-destroying F ungus, xii. 
565- 
— insigne , description (*), xv. 331. 
Peperomia, embryo-sac of (*), xv. 103. 
— geophilous species of, anatomy (*), xx. 
413; fruit and seed structure (*), xx. 
398; germination (*), xx. 401. 
— amplexifolia, seedling-structure (*), xx. 
167. 
— eburnea, seedling-structure (*), xx. 164. 
— gracillima, morphology, xx. 411. 
— macandra, seedling-morphology (*), xx. 
412. 
— maculosa, seedling-structure, xx. 170. 
— mexicana, fruit and seed (*), xx. 41 1 ; 
seedling-morphology (*), xx. 412. 
— parvifolia, fruit and seed (*), xx. 404 ; 
seedling-morphology (*), xx. 405 ; seed- 
ling-structure (*), xx. 404. 
— pedicellata, fruit and seed (*), xx. 408 ; 
seedling-morphology (*), xx. 409 ; seed- 
ling-structure (*), xx. 410. 
— pellucida, embryo, xv. 1 1 1 ; embryo-sac 
(*), xiii. 626; xv. 105, no; endosperm 
(*), xv. 108; fertilization (*), xv. 108; 
flower, xv. 104; fruit, xv. in; pollen 
(*), xv. 107; pollination (*), xv. 107; 
seedling-structure (*), xx. 165 ; systematic 
position, xv. 116. 
— peruviana, germination (*), xx. 401 ; 
morphology (*), xx. 401 ; seedling-struc- 
ture (*), xx. 404, 413. 
— polystachya, seedling-structure, xx. 1 66. 
— tithymaloides, seedling-structure (*), xx. 
169. 
Peperomia umbilicata, fruit and seed (*), xx. 
408 ; seedling-morphology, xx. 408. 
— verrucosum, fruit (*), xx. 406. 
Pepsin, xvi. 17. 
Peptolysis in Agaricus campestris, xviii. 312 ; 
in Saccharomyces cerevisiae, xviii. 299. 
Peptonization in Agaricus campestris, xviii. 
309 ; in Saccharomyces cerevisiae, xviii. 
301. 
Peramium repens, morphology, xiii. 20 ; my- 
corhiza, xiii. 20 ; structure of vegetative 
parts, xiii. 20. 
Perennial mycelium, does it exist in the 
wintering corn plant ? xix. 57. 
Pereskia, morphology of embryo and seed- 
ling (*), xii. 438. 
Periodicity in Ceylon, foliar, xvi. 594 ; in 
Dictyota, is it an hereditary character? 
xix. 546 ; in Haliseris, xix. 552. 
— of sexual cells in Dictyota dichotoma (*), 
xix. 531 ; cause of, xix. 541. 
Perisporiaceae, coprophilous (*), xv. 330, 
xvi. 67. 
Peronospora parasitica, fertilization (*), xiv. 
263 ; nuclear division, xiv. 269, 271. 
Pertz, D. F. M. — On the Distribution of 
Statoliths in Cucurbitaceae, xviii. 653. 
— On the Gravitation Stimulus in Relation 
to Position, xiii. 620. 
— The Position of Maximum Geotropic 
Stimulation, xix. 569. 
— and Darwin, F. — On the Artificial Pro- 
duction of Rhythm in Plants, with a Note 
on the Position of Maximum Heliotropic 
Stimulation (four text-figures), xvii. 93. 
Petioles of Ferns, structure and phylogenetic 
importance, xv. 9 5. 
Petrospongium Berkeleyi, plurilocular spo- 
rangia of (*), xiii. 461. 
Pezizaceae, coprophilous, xvi. 66. 
Pezi%a, description, xi. 286. 
— aurantia, germination of spores, xi. 339. 
— cornucopiae , description (*), xi. 288. 
— e , verpoides , description, xi. 294. 
— {Hum aria) salmonicolor , description, xvi. 
66. 
Pfeiffera, seedling-morphology, xii. 453. 
Phaeophyceae, phylogenetic relations of 
primitive, xiv. 678. 
Phaeostilbeae, coprophilous, xvi. 86. 
Phajus grandifolius, localization of indigo- 
producing substance (*), xix. 306. 
— maculatus, localization of indigo-pro- 
ducing substance, xix. 307. 
— Wallichii, localization of indigo-producing 
substance, xix. 307. 
Phallus , description, xi. 286. 
— marcidus , description (*), xi. 291. 
Phaseolus, root-apex : nuclei, reconstitution 
of the daughter (*), xviii. 47 ; nucleolus, 
changes in during prophase (*), xviii. 45 ; 
nucleolus, structure (*), xviii. 42 ; nucleus, 
resting (*), xviii. 41. 
