▁from ▁As pl enium , ▁Ed gar ▁T . ▁Wh er ry ▁renamed ▁it ▁× As pl en os orus ▁eben o ides ▁in ▁ 1 9 3 7 , ▁although ▁this ▁name ▁was ▁not ▁univers ally ▁recognized . ▁In ▁ 1 9 5 6 , ▁C . ▁V . ▁Mort on ▁pointed ▁out ▁that ▁the ▁lack ▁of ▁a ▁Latin ▁diagn osis ▁for ▁the ▁hy brid ▁genus ▁× As pl en os orus ▁made ▁that ▁genus ▁and ▁combinations ▁under ▁it ▁invalid ▁under ▁the ▁International ▁Code ▁of ▁Botan ical ▁N omen cl ature ; ▁in ▁any ▁case , ▁he ▁preferred ▁to ▁cons olid ate ▁Cam pt os orus ▁into ▁As pl enium . ▁ ▁Further ▁confirm ation ▁of ▁the ▁parent age ▁of ▁both ▁ster ile ▁and ▁fert ile ▁forms ▁occurred ▁in ▁ 1 9 6 3 . ▁Both ▁forms ▁were ▁subject ed ▁to ▁chrom at ographic ▁anal ys es , ▁and ▁the ▁chrom at og rams ▁they ▁produced ▁contained ▁all ▁the ▁comp ounds ▁detected ▁in ▁the ▁chrom at og rams ▁of ▁both ▁parents . ▁ ▁Ster ile ▁and ▁fert ile ▁populations ▁In ▁ 1 9 5 3 , ▁Her b ▁Wagner ▁showed ▁that ▁the ▁fert ile ▁population ▁in ▁Hav ana ▁Glen ▁was ▁t et rap lo id , ▁while ▁ordinary ▁As pl enium   eben o ides ▁was ▁dip lo id . ▁Wagner ▁and ▁Robert ▁S . ▁Whit m ire ▁followed ▁up ▁in ▁ 1 9 5 7 ▁and ▁induced ▁chrom os ome ▁dou bling ▁in ▁dip lo id ▁A .   eben o