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Dryandra subg. Hemiclidia
''Dryandra'' subg. ''Hemiclidia'' is an obsolete plant taxon that encompassed material that is now included in ''Banksia''. Published at genus rank as ''Hemiclidia'' by Robert Brown in 1830, it was set aside by George Bentham in 1870, but reinstated at subgenus rank by Alex George in 1996. In 2007, all ''Dryandra'' species were transferred into ''Banksia'' at series rank, and the infrageneric ''Dryandra'' taxa, including ''D.'' subg. ''Hemiclidia'', were set aside.
==According to Brown==
In 1810, Robert Brown published the genus ''Dryandra'' in his ''On the Proteaceae of Jussieu''. Thirteen species were published, including ''Dryandra falcata'' (now ''Banksia falcata''), but no infrageneric arrangement was proffered. Twenty years later, Brown published a further eleven species and the first infrageneric arrangement in his ''Supplementum primum prodromi florae Novae Hollandiae''. By this time, Brown had observed the tendency in ''D. falcata'' for one of the two ovules in each follicle to abort, thereafter developing into a winglike appendage to the seed separator. On this basis, he transferred the species into a monotypic genus, which he named ''Hemiclidia'', from the Greek ''hemi'' ("half") and perhaps ''kleidos'' ("barrier", "means of closing").
''Hemiclidia'' was retained in the 1856 arrangement of Carl Meissner, but discarded by George Bentham in his 1870 revision of the genus. Bentham correctly observed that the abortion of seeds occurs in other ''Dryandra'' species, and is a diagnostically unimportant character:
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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