204 
— foliosa Bfh. AR, 229 
— laxa Bth. 47, 229 
— Schumanniana Taub. 78, 75 
Piptocephalis de By., Sporenbildung. 66, 
262 
Pipturus albidus Gray. 57, 547 
Pirotts, R., Personal. 64, 31 
Pistacia Lentiscus auf Chios, 43, 713 
—, Lebensdauer. 97, 405 
Pistia, Revision. 36, 580 
Pistiaeeae, Übersicht. 36, 577 
Pistille, Gersniaceae. 47, 401 
—, Metamorphose bei Salix. 26, 782 
Pistoja, Vegetation. 49, 97 
Pisum sativum, Ranken, 49, 375 
—, Morphologie. 48, 92 
—, Variation. 831, 64 
Piteairnea bracteata Ait. var, fulgens Reg. 
36, 451 
— ringens Reg. 36, 450 
Pithecolobium Brongniartii Duchass. et 
Walp. 36, 232 
— oblongum Bith. 36, 231 
— Saman Bih., altes Expl. in Nicaragua. 
58, 46 
— —, Wurzelsystem. 95, 83 
Pithophora clavifera Schmidle. 88, 304 
Pittosporum cauliflorum Mann. 56, 168 
— dasycaulon Mig. 36, 765 
— discolor Rgl. 835, 177 
— terminalioides Planch, var. glabrum 
Hook. et Arn, 56, 168 
— — var. spathulatum Gray. 56, 169 
Placenta, Eintwiekelungsgeschichte. 78, 62 
—, —, Abietineae. 68, 519 
Plaeidiopsis Custnani Mass, 68, 65 
Plaeidium cartilagineum Nyl. 68, 63 
— — £. daedaleum Krph. 68, 63 
— compactum Mass. 68, 64 
— hepaticum Ach. 68, 64 
— Michelii Mass. 68, 64 
—- monstrosum Ach, 68, 65 
—- rufescens Ach. 68, 63 
—, spp. erit. 41, 532 
Piacodium cerinoides Anzi. 59, 239 
— eoncolor var. angustum Arn. 58, 60 
— cretaceum Müll. Arg. 50, 434; 55, 465 
— deminutum Müll. Arg. 71, 204 
— dissidens Nyl. 58, 298 
— Ferdinandi Müll. Arg. 64, 508 
— fulgidum Nyl. 48, 212 
— glebulare Müll, Arg. 71, 204 
— gracile Müll. Arg. 58, 61 
— — £. atratum Müll. Arg. 38, 61 
— — f. amoenum Müll. Arg. 58, 61 
— Lorentzii Müll. Arg. 72, 510 
— mierocarpum Colm. 52, 501 
— obliterans Nyl. 87,7 
— radiosum Hoft. £. myrrhinum Fr. 70,149 
Piptadenis foliosa Bth, — Plantage missourensis Steud, 
sazicolum Krph., Apothecien. 71, &73 
— subeandicans Müll. Arg, 57, 528 
— subglebosum Müll. Arg, 72, 510 
— tenuatum NyL 62, 202 
— thaeodes Müll Arg. 82, 290 
— rariegatum Colm. 52, 501 
—, fränkisches Jura. 67, 311 
—, Reaktionen, 4, 193 
——, 3pp. cerit. 41, 305; 48, 66; 44, 606 
Placophora Binderi, Entwickelung. 72, 3 
Plaeynthium, fränkisches Jura, 67, 239 
Plagiochasma Aitonii, Sporen. 19, 360 
—, Sporogonlum. 86, 183 
Pisgiochilla asplenoides, Regeneration. 
M in. 008 
Plagiogyria Mett. » 
Plagiophototsxie, 76, 207 
Plagiophototropie. 75, 231 
Plagiopteron Griff. 27, 437 
— susveolens Grifl, 97, 437 
Plagiotheeium dentieulatum L. var. her- 
cynieum Jur. 55, 230 
— Schimperi Jur. et Milde. 47, %0 
—, SPP. varı, 40, 70 
-—, — in Oberbayern, 44, 331, 337 
Plagiotrems lageniferum Müll. Arg. 68, 251 
Plagiotrope Sprosse, Heliotropiemus, 38,23 
Plagiotropie, Sprosse, Queurbita Pepo. 
85, 425 
Planchonia undulata Tem. et Bnnd. 49, 438 
Plankton, Varistionsstetistik der Kompo- 
nenten. 91, 380 
Plantse intermedise. 8, 42 
Plantsginacese, Embryosack. 2, 10 h 
—, Revision. 80, 170 
Plantsgo abyssinica Hochst. 32, 413 
— albicans L. 32, 414 
— argentea Stend. 92, 412 
— Berteronians Steud. 32, 407 
— bonsariensis Steud. 32, 408 
— clausa Steud. 32, 407 
— eylindrica Forsk. 82, 411 
— decumbens Forsk. 32, 411 
— elata Steud. 32, 413 
— eriopoda Torr. 32, A415 
— Ferdinandeziena Steud. 832, 406 
— ? Frankii Steud. 32, 409 
— hygrophils Steud, 32, 403 
— intermedia Steud. 82, 414 
— leonensis Steud. 32, 404 
— maerosperma Steud. 82, 405 
— major, Mißbildung. 29, 530 
— maritima, Schleim. 58, 193 
— marginata Steud. 82, 407 
— medis, Blutung des Blütenschaftes. 
64. 
— —, chem. Untersuchung. 
— missourensis Steud. 
