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Dacrycarpus dacrydioides, commonly known as kahikatea (from Māori) and white pine, is a coniferous tree endemic to New Zealand. A podocarp , it is New Zealand's tallest tree, gaining heights of 60 m over a life span of 600 years.
Eastern white pine is self-fertile, but seeds produced this way tend to result in weak, stunted, and malformed seedlings. Mature trees are often 200–250 years old ...
Western white pine is a large tree, regularly growing to 30–50 metres (98–164 ft) tall. It is a member of the white pine group, Pinus subgenus Strobus, and like all members of that group, the leaves ('needles') are in fascicles (bundles) of five, [5] with a deciduous sheath. The needles are finely serrated, [5] and 5
Viable seeds produced by a mature tree undergo Stratification. [2] This process imitates the period of dormancy that occurs during the winter. [2] In the commercial Christmas Tree nurseries of the northern United States, seeds are sown directly into seed beds in the late fall to allow the seeds to stratify naturally over the winter.
Pinus albicaulis is the only type of tree on the summit of Pywiack Dome in Yosemite National Park. Pinus albicaulis, known by the common names whitebark pine, white bark pine, white pine, pitch pine, scrub pine, and creeping pine, [4] is a conifer tree native to the mountains of the western United States and Canada, specifically subalpine areas of the Sierra Nevada, Cascade Range, Pacific ...
Limber pine (Pinus flexilis), another of these species from western North America, was also sometimes known as White Pine; Chinese white pine (Pinus armandii), a species native to China; Japanese white pine (Pinus parviflora), a species native to Japan; Vietnamese white pine (Pinus dalatensis), a species native to Vietnam and Laos
Potentially toxic effects of mountain pine extract have also been studied in the germination of lettuce seeds. Foliage extracts from mountain pine significantly (p < 0.01) reduced germination when the extract came from both juvenile and adult pines, which did not differ from each other. [28] Aside from germination, both juvenile and adult pines ...
Norman C. Deno (February 15, 1921 – September 22, 2017) was an American chemist and plant scientist.He was a professor of chemistry at Penn State University and is known as one of the foremost researchers in seed germination theory.