Crataegus collina

Crataegus collina
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Rosaceae
Genus: Crataegus
Series: Punctatae
(Loudon) Rehder[1]
Species: C. collina
Binomial name
Crataegus collina
Chapm.

Crataegus collina is a type of hawthorn that is closely related to C. punctata, the dotted hawthorn[2], and sometimes considered to be the same species[3]. A sample of C. collina and C. punctata has suggested that C. collina is polyploid, and C. punctata is diploid, but a wider sample is needed to confirm that this is generally the case[4].

References and external links

  1. ^ Phipps, J.B.; Robertson, K.R.; Smith, P.G.; Rohrer, J.R. (1990). A checklist of the subfamily Maloideae (Rosaceae). Canadian Journal of Botany. 68(10): 2209–2269.
  2. ^ Phipps, J.B., O’Kennon, R.J., Lance, R.W. (2003). Hawthorns and medlars. Royal Horticultural Society, Cambridge, U.K.
  3. ^ Gleason, H.A,. Cronquist, A. (1963) Manual of vascular plants of Northeastern United States and adjacent Canada. W. Grant Press, Boston, Mass., U.S.A.
  4. ^ Talent, N., Dickinson, T.A. (2005). Polyploidy in Crataegus and Mespilus (Rosaceae, Maloideae): evolutionary inferences from flow cytometry of nuclear DNA amounts. Canadian Journal of Botany 83: 1268–1304