ðə lˈæst kˈɑːmən ˈænsɛstɚɹ ʌvðə sˈɪlvɚsˌoːɹd ɐlˈaɪəns wʌz lˈaɪkli ɐ mˈæt ænd ɹˈaɪzoʊm fˈɔːɹmɪŋ plˈænt nˌɑːt mˈoːɹ ðɐn tˈɔːl, wɪð ɐ kɹˈoʊməsˌoʊm nˈʌmbɚɹ ʌv tˈuː ˈɛn ˈiːkwəlz sˈɪkstiːn, ænd pɚhˈæps ɐnˈʌðɚ sˈɪmɪlɚ spˈiːsiːz.
The last common ancestor of the silversword alliance was likely a mat and rhizome forming plant not more than  tall, with a chromosome number of 2n = 16, and perhaps another similar species.