What is a tree?. Smartphone tour. University of Miami: John C. Gifford Arboretum (2012). Arkivita el la originalo je 2014-04-20. Alirita 23a de Septembro 2014 .
Arkivita kopio. Arkivita el la originalo je 2014-04-20. Alirita 2017-04-11 .
bio.miami.edu
Monocot stems. The stem. University of Miami. Alirita 2014-09-22 .
Northern Coniferous Forest Biome. The Forest Community. FORSite. Alirita 2014-06-28 . “The diversity of tree species in the boreal forest is quite low, with black spruce (Picea mariana), larch or tamarack (Larix laricina), and white spruce (P. glauca) the most common species. The former two species generally occupy wet sites with poorly drained mineral or organic soils, while white spruce is the climatic climax species on sites that are drier and higher in nutrient content. Balsam fir (Abies balsamea) is a dominant tree species in the eastern half of the biome.”.
web.archive.org
What is a tree?. Smartphone tour. University of Miami: John C. Gifford Arboretum (2012). Arkivita el la originalo je 2014-04-20. Alirita 23a de Septembro 2014 .
Arkivita kopio. Arkivita el la originalo je 2014-04-20. Alirita 2017-04-11 .