From en.wiktionary.org:
[backer]
** Translingual
*** Proper noun
[mul-proper noun]
1. A botanical plant name author abbreviation for [mul] botanist [Cornelis Andries Backer] (1874-1963). For the surname, see below.
*** Further reading
- Author query of the International Plant Names Index (see http://www.ipni.org/ipni/authorsearchpage.do)
[mul]
** English
[wikipedia]
*** Etymology
- As a [en] ( [en] ) and occasionally [en] surname, variant of [en] . Compare also [en] .
- As a [en] and occasionally [en] surname, variant of [en] . Compare also [en] .
- As an English surname, variant of [en] .
*** Proper noun
[en-proper noun]
1. [en] .