(from the article `Sphenophyta`) ...reproductive shoots. In these species the strobilate branches appear first, and, after the spores are shed, the green vegetative shoots develop. ... ...or on special nongreen branches that wither and die after the spores have been shed (E. arvense, E. talmateia). The appendages of the strobilus ... ... Found on http://www.britannica.com/eb/a-z/s/143
Spo·ran'gi·o·phore noun [ Sporangium + Greek ... to bear.] (Botany) The axis or receptacle in certain ferns (as Trichomanes ), which bears the sporangia. Found on http://www.encyclo.co.uk/webster/S/171