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
On the cultivation of the plants belonging to the natural order of Proteeae conserved. However it was not possible to conserve species names until the 1980s, by which time the priority of Salisbury's species names had long been accepted. Thus "On the cultivation of the plants belonging to the natural order of Proteeae" is the source of numerous names of Proteaceae taxa. On the cultivation of the plants belonging to the natural order of Proteeae On the cultivation of the plants belonging to the natural order of Proteeae is an 1809 paper on the family Proteaceae of flowering plants. Although nominally written by Joseph Knight as a paper on cultivation techniques, all but