In the paper, he described the hoary redpoll (Linota hornemanni, now known as Carduelis hornemanni), which he named for the botanist Jens Wilken Hornemann. Hornemann had previously received plant collections from Holbøll and named a new species Arabis holboellii (now known as Boechera holboellii).
In his paper, he discussed the hoary redpoll (Linota hornemanni, now Carduelis hornemanni), naming it in honor of botanist Jens Wilken Hornemann. Hornemann had previously received plant samples from Holbøll and named a new species Arabis holboellii (now Boechera holboellii).