Brachyscome simplicifolia J.B.Armstr. was treated as incertae sedis by H.H. Allan in the Flora of New Zealand, Volume 1, published in 1961. At that time, H.H. Allan, along with the earlier flora writers T. Kirk and T.F. Cheeseman, had not seen herbarium material referable to that name. An authentic herbarium specimen from the Armstrong Herbarium, formally part of the Christchurch Botanic Gardens Herbarium (CHBG) but now housed at the Allan Herbarium (CHR), has been located and is designated as lectotype for B. simplicifolia. Based on this lectotypification, B. simplicifolia is conspecific with Abrotanella linearis Berggr., and being the more recently published name is treated as a heterotypic synonym.

Brachyscome simplicifolia JBArmstr。HH Allan在1961年出版的《新西兰植物志》第1卷中将其视为不合格植物。当时，HH Allan以及早期的植物志作家T. Kirk和TF Cheeseman都没有看到标本室的材料名称。从阿姆斯特朗植物标本馆，基督城植物园标本馆的正式组成部分（CHBG），但现在安置在艾伦植物标本馆（CHR）一个真实的植物标本，已经找到，并被指定为选型为B. simplicifolia。基于这种选型，单形芽孢杆菌与线性阿布鲁坦氏菌是同种的，并且作为最近发表的名称被视为异型同义词。