The effects of achene dimorphism on the dispersal in time and space in Crepis
The previously cited studies of Hypochoeris (Parker, 1975) and Crepis (Tease & Jones, 1976) are examples showing the importance of proper chromosome identification, and that failure in living up to this may lead to incorrect conclusions and generalizations.
Direct identification of all chromosomes during meiosis is only possible in extremely rare cases, but hybrids between species of Crepis do offer an example (Togby, 1943).
Morphometric differentiation, patterns of interfertility, and the genetic basis of character evolution in Crepis tectorum (Asteraceae).
Differences in the genetic basis of leaf dissection between two populations of Crepis tectorum (Asteraceae).
Crepis tectorum was mostly known as arnica and possessed no other names indicating its usage in folk medicine.
Kohlmunzer (1989) "Sesquiterpene lactone glycosides from Crepis tectorum".
In collaboration with scientists from Sweden, Dr Allan Green, Dr Surinder Singh and Dr Xue-Rong Zhou have isolated and cloned a gene (Cpal2) which directs the synthesis of epoxy fatty acids in Crepis palaestina--a relative of the dandelion.
These include genes for the production of hydroxy fatty acids, found in castor oil and used in lubricants and inks; conjugated fatty acids from tung seeds; and acetylenic fatty acids found in another dandelion relative, Crepis alpina.
Changes in the activity of antioxidant enzyme superoxide dismutase in Crepis
capillaris plants after the impact of UV-B and ozone.
In addition to the spontaneous occurrence of this phenomenon, there are two documented cases of induced occurrence, in Crepis tectorum and Antirrhinum majus, using an experimental approach opposite to that above described for production of female-derived embryos with irradiated pollen.
Experimentally produced haploid plant in Crepis tectorum.