Studies onArtemisia afra Jacq.: The phloem in stem and leaf C. E. J. BothaRay F. Evert OriginalPaper Pages: 217 - 231
Fucose in the surface deposits of axenic and field grown roots ofZea mays L. Janet VermeerM. E. McCully OriginalPaper Pages: 233 - 248
Environmental control and evidence for predetermination of pollen embryogenesis inNicotiana tabacum pollen E. Heberle-BorsJ. Reinert OriginalPaper Pages: 249 - 255
The flagellar root system in the gamete ofAcetabularia mediterranea W. HerthB. HeckH. U. Koop OriginalPaper Pages: 257 - 269
Calcium oxalate crystals inOpuntia ficusindica (L.) mill.: Development and relation to mucilage cells — A stereological analysis S. TrachtenbergA. M. Mayer OriginalPaper Pages: 271 - 283
In vitro differentiation of embryogenic pollen, control by cold treatment and embryo formation inab initio pollen cultures ofNicotiana tabacum var. badischer burley A. RashidJ. Reinert OriginalPaper Pages: 285 - 294
Effects of microtubule-inhibitors on nuclear migration and rhizoid differentiation in germinating fern spores (Onoclea sensibilis) Th. C. VogelmannA. R. BasselJ. H. Miller OriginalPaper Pages: 295 - 316
Studies of vegetative compatibility-incompatibility in higher plants R. MooreD. B. Walker OriginalPaper Pages: 317 - 334
The immunocytochemical localization of 9.5 cellulase in abscission zones of bean (Phaseolus vulgaris cv. red kidney) R. SextonM. L. DurbinW. W. Thomson OriginalPaper Pages: 335 - 347
Occurrence and distribution of filipin-sterol complexes in chloroplast envelope membranes of algae and higher plants as visualized by freeze-fracture M. MelkonianH. RobenekM. Steup OriginalPaper Pages: 349 - 358
Occurrence of the suberized lamella in leaves of grasses of different photosynthetic types. I. In parenchymatous bundle sheaths and PCR (“Kranz”) sheaths P. W. HattersleyA. J. Browning OriginalPaper Pages: 371 - 401
Location of heitz's zerstäubungsstadium (dispersion phase) in the mitotic cycle ofPhaseolus coccineus and the concept of Angiosperm endomitosis A. CavalliniP. G. CioniniF. D'Amato OriginalPaper Pages: 403 - 414
Growth characteristics of hormone and vitamin independent photoautotrophic cell suspension cultures fromChenopodium rubrum W. Hüsemann OriginalPaper Pages: 415 - 431
Chromosomal variation on plants regenerated from twoNicotiana spp. V. Nuti RonchiM. NozzoliniL. Avanzi OriginalPaper Pages: 433 - 444