Evolutionary history of plants and radially symmetrical, is an integumented megasporangium surrounded by a cupule. The megasporangium bears an unopened distal extension protruding above the multilobed integument. It is suspected that the extension was involved in anemophilous pollination. "Runcaria" sheds new light on the sequence of character acquisition leading to the seed. "Runcaria" has all of the qualities of seed plants except for a solid seed coat and a system to guide the pollen to the ovule. The first spermatophytes (literally: "seed plants") – that is, the first plants to bear true seeds – are called pteridosperms: literally, "seed ferns", so called because their
Pitcher Plants of the Old World Pitcher Plants of the Old World Pitcher Plants of the Old World is a two-volume monograph by Stewart McPherson on the pitcher plants of the genera "Nepenthes" and "Cephalotus". It was published in May 2009 by Redfern Natural History Productions and covers all species known at the time. The work was edited by Alastair Robinson and Andreas Fleischmann. The monograph was followed in 2011 by "New Nepenthes: Volume One", a supplementary work covering the many "Nepenthes" taxa documented in the preceding few years. In an interview with "The Hoopoe", McPherson explained his reasons for writing the book and the extensive