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''Dryandra'' ser. ''Aphragma'' is an obsolete series within the former genus ''Dryandra'' (now ''Banksia'' ser. ''Dryandra''). It was first published at sectional rank by Robert Brown in 1830, and was retained at that rank until 1999, when Alex George demoted it to a series. It was discarded in 2007 when Austin Mast and Kevin Thiele sank ''Dryandra'' into ''Banksia''. ==According to Brown== ''Aphragma'' was first published by Brown in his 1830 ''Supplementum primum prodromi florae Novae Hollandiae''. Brown's arrangement divided ''Dryandra'' into three groups according to what Brown perceived to be variations in the number of seed separators. He allowed for these groups to be treated at subgenus or section rank, but they are now treated as having been published as sections. ''D.'' sect. ''Aphragma'' was defined as containing four species which Brown thought lacked seed separators.〔 The epithet ''Aphragma'' is from the Greek ''a-'' ("without") and ''phragma'' ("barrier"). The placement and circumscription of ''D.'' sect. ''Aphragma'' in Brown's 1830 arrangement may be summarised as follows: :''Dryandra'' (now ''B.'' ser. ''Dryandra'') ::''Dryandra verae'' (18 species) ::''D.'' sect. ''Diplophragma'' (1 species) ::''D.'' sect. ''Aphragma'' :::''D. nervosa'' (now ''B. alliacea'') :::''D. callophylla'' (now ''B. calophylla'') :::''D. pteridifolia'' (now ''B. pteridifolia'') :::''D. blechnifolia'' (now ''B. pellaeifolia'') :''Hemiclidia'' (1 species) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dryandra ser. Aphragma」の詳細全文を読む スポンサード リンク
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