586 



OXALIS. 



Oxalis rnsea, pulvinus of, 113 

 , movement of cotvledons at 



night. 117, 118.307 



, effect of dull light, 124 



, uon - sensitive cotyledon*, 



127 



sensitiva, movement of coty- 

 ledons, 100, 127, 128 



, circumnutatioii of flower-stem, 



224 



, nocturnal movement of coty- 

 ledons, 307, 312 



, sleep of leaves, 327 



tropceoloides, movement of co- 

 tyledons at night, 118, 1'-dO 



Valdiciana, conjoint cireum- 



nutaticm of cotyledons and hypo- 

 cotyl, 25 



, cotyledons rising vertically at 



night, 114, 115, 117, 118 



, non-sensitive cotyledons, 127 



, nocturnal movement of coty- 

 ledon, 307, 312 



, sleep of leaves and not of co- 

 tyledons, 315 



-, movements of leaves, 327 



P. 



Pacliira aquatica, unequal cotyle- 

 dons, Oo, n. 

 Pancratium liltorale, movement of 



leaves, 2.55 

 Paraheliotropism, or diurnal sleep 



of leaves, 445 

 Pastiflura (jracilis, circumnutation 



and nyctitropic movement of 



K aves, 383, 34 

 , apogeo tropic movement of 



tendrils, 5 10 



, sensitiveness of tendrils, 550 



Pelargonium zonale, circumuutation 



of stem, 203 

 , and downward movement of 



young leaf, 232, 233, 260 

 Petioles, the, rising of, beneficial to 



plant at night, 402 

 Petunia violacea, downward move- 



niASKOLUS. 



ment and cireummitation of very 

 young leaf, 24S, 249, 26'J. 



Pfcffer, Prof., on the tuvgescence of 

 the cells, 2 ; on pulviui of K aves, 

 113, 117; sleep movements of 

 haves. 280, 283, "281; nocturnal 

 rising of leaves of Malva, 324 ; 

 movements of leaflets in J)esir.o- 

 dium py rans, 358; on Phijllan- 

 thns Niruri, :~'88; influence of a 

 pulvinus on leaves, 3-G; periodic 

 movements of sleeping leaves, 

 407, 40* ; movements of petals, 

 414; effect of bright sunshine on 

 leaflets of Robinia. 445; effect of 

 light on parts provided with pul- 

 vini, 3G3 



Phalaris Canariensis, movements of 

 old seedlings, 02 



, circumnutation of cotyledons, 



G3, 64, 108 



, heliotropic movement and cir- 

 cumnutation of cotyledon towards 

 a dim lateral light," 427 



, sensitiveness of cotyledon to 



light, 455 



, effect of exclusion of light 



from tips of cotyledons, 45G 



, manner of bending towards 



light, 457 



, effects of painting with Indian 



ink, 467 



, transmitted effects of light, 



469 



, lateral illumination of tip, 



470 



, apngsotropic movement of the 



sheath-like cotyLdons, 497 



, change from a straight up- 

 ward apogeotropic course to cir- 

 cumnutation, 499 



, apogeotropic movement of 



cotyledons, 500 



Phaseolus Hernandesii, nocturnal 

 movement of leaves and leaflets, 

 3U8 



caracalla, 93 



, nocturnal movement of leaves, 



368 



, effect of bright sunshine on 

 leaflets, 446 



