Seeds of Crepis species are an important food source for some bird species.

The name Crepis derives from Greek, meaning "shoe".

Babcock needed assistance with a large Rockefeller-funded project on the genetics and evolution of plants from the genus Crepis.

For example, the weed Crepis sancta, found in France, has two types of seed, heavy and fluffy.

A mature Crepis tectorum plant will have dandelion-like flowers, with many flowers on each stem.

Crepis nana is a species of flowering plant in the daisy family known by the common name dwarf alpine hawksbeard.

Crepis species are used as food plants by the larvae of some Lepidoptera species including the broad-barred white moth.

Crepis commonly hybridized, displayed polyploidy, and could make seed without fertilization (a process known as apomixis).

The genus Crepis is a rich source of costus lactone type guaianolides.

Flowers of Crepis tectorum are approximately - inches wide and are hermaphrodite, having both male and female organs.

The larvae probably develop in roots and stems of Leontodon autumnalis and Crepis species.

Youngia was first described in 1831 by H. Cassini, and the genus was later united with Crepis.

Other plants with superficially similar flowers include hawkweeds (Hieracium) and hawksbeards (Crepis).

Smooth hawk's-beard (Crepis capillaris)

Marsh hawk's-beard (Crepis paludosa)

It is the most southerly known locality in Britain for Marsh Hawk's-beard (Crepis paludosa).

Northern Hawk's-beard (Crepis mollis)

The first monograph, published in 1937, resulted in splitting off the Asiatic Crepis species into the genus Youngia.

Some genera, such as Crepis, have a complex of reproductive forms that center on sexually diploid populations that have also given rise to polyploid ones.

In the past, a number of other species were included in the genus; these species are now treated in the genera Crepis and Lapsanastrum.

He is particularly known for seeking to understand by field investigations and extensive experiments, the entire polyploid apomictic genus Crepis, in which he recognize 196 species.

And so, Park added to its spring catalogue this year the annuals he lichrysum, a bright yellow bloomer, and Crepis rubra, which has pink blossoms.

The second, published in 1938, was titled The American Species of Crepis: their interrelationships and distribution as affected by polyploidy and apomixis.

The larvaeare feed on Picris hieracioides, Picris echioides and Crepis species.

The larvae feed on Senecio, Crepis and Solidago species, as well as Sonchus arvensis.