Search results
Results from the WOW.Com Content Network
Some plants and trees are resistant to juglone including some species of maple (Acer), birch (Betula), and beech (Fagus). [citation needed] It is highly toxic to many insect herbivores. However, some of them, example Actias luna (Luna moth), can detoxify juglone (and related naphthoquinones) to non-toxic 1,4,5-trihydroxynaphthalene.
Juglans californica, the California black walnut, also called the California walnut, or the Southern California black walnut, [1] is a large shrub or small tree (about 20–49 feet (6.1–14.9 m) [3]) of the walnut family, Juglandaceae, endemic to the Central Valley and the Coast Range valleys from Northern to Southern California.
Walnut trees are any species of tree in the plant genus Juglans, the type genus of the family Juglandaceae, the seeds of which are referred to as walnuts.All species are deciduous trees, 10–40 metres (33–131 ft) tall, with pinnate leaves 200–900 millimetres (7.9–35.4 in), with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts (Pterocarya), but not ...
Allelopathy has been shown to play a crucial role in forests, influencing the composition of the vegetation growth, and also provides an explanation for the patterns of forest regeneration. [27] The black walnut (Juglans nigra) produces the allelochemical juglone , which affects some species greatly while others not at all.
The state’s other nursery in Butte County soon followed in 2010, leaving California with no state-grown forest seedlings. ... The maximum distance trees can cross pollinate is around 200 feet.
Trees in mature stands severely defoliated by the western spruce budworm may become susceptible to bark beetles, which kill mature trees. [ 2 ] Pinus contorta ssp. latifolia defoliated by western spruce budworm (Choristoneura freemani) near Blewett Pass summit, Chelan County Washington
A Joshua tree in Juniper Hills is engulfed by the Bobcat fire in 2020. Wildfires, along with climate change and habitat loss, are taking an increasing toll on Joshua trees in California.
Trees portal; Tolerance of Tree Species; Silvics of North America, an encyclopedia of characteristics for around 200 tree species native to the United States published by the United States Forest Service. Zeigerwerte der Pflanzen Mitteleuropas (German) Archived 2015-08-07 at the Wayback Machine