Kovachev Tagasaste (Chamaecytisus kovacevii (Velen.) Rothm.)

This is the only one endemic in the Lom Valley. Its habotat includes just the Northern part of the Danube Plain, west of the city of Ruse. The numberous localities of Kovachev Tagasaste are found in the northern watershed of the Roussenski Lom River. The plant was first described for the science in the research of Czech botanist Yosef Velenovski by herbarial materials, sent to him by the well-known Bulgarian naturalist Vasil Kovachev at the beginning of the 20 th century.

Butchers Broom (Ruscus hipoglossum)

The twings that are kind of "leaves" - phylloclade, are the most interesting about this semi-shrub. Most often, small, reduced, flake-like leaces are formed along the medium vein. It blooms in March and April. Blossoms are quite small, arranged upon the membraneous scutlum. Grainy red fruits develop form the latter and adorn evergreen phyloclade during wintertime, too. Along with the rare species described ordinary Butchers Broom (Ruscus aculcatus) is also spread. There are relicts since the Tertiary period of our flora.

This is the rarest species among ligneous species (the so called dendroflora). It grows mainly in the rock cracks of canyon-type Valley of Rusenski Lom River. This species of Caucasian origin in Europe raches the Crimea and East Bulgaria. Until recently the Nude Hackberry Tree was wrongly taken for Caucasian Hackberry Tree, which is close ligneous species that also inhabits the area of Caucasus.