]> Designated a LT. (vide Brittonia 51: 249. 1999) [author note: TRT; Crataegus, Larix laricina; breeding system; WWW-assisted ID [Dickinson provided a portion of the data on 8 Jul 1999]] Botany Dickinson, Timothy Aadam Dickinson, Timothy Aadam T. A. Dickinson Timothy A. Dickinson 1946