Search results
Results From The WOW.Com Content Network
The male strobilus and the female strobilus are found on two separate plants. The cones on the female plant are thick and have red-orange seeds. They also have a velvety texture, and only grow up to 6 inches. On the other hand, the ones on the male plant are narrow and tall, and contain pollen. They can reach a length of 7 inches.
These conifers act as a facilitator species, also known as nurse trees, significantly increasing species richness and abundance of other trees beneath their crowns. [ 14 ] [ 15 ] The crowns of these iconic trees foster a unique microenvironment that positively influences the structure and diversity of plant communities [ 16 ]
The yellowish-green foliage varies in size and shape between the juvenile, sub-adult, and adult life stages. The leaves begin 0.4–10 mm (0.016–0.394 in) long and 0.5–0.1 mm (0.0197–0.0039 in) wide with sharp points. They are divided along an axis and roughly shaped like a sickle. In sub-adults the leaves shorten to 4–6 mm (0.16–0.24 ...
The conifers, division Pinophyta, are one of 13 or 14 division level taxa within the Kingdom Plantae. They are cone -bearing seed plants with vascular tissue; all extant conifers are woody plants , the great majority being trees with just a few being shrubs .
Gnetophyta (/ n ɛ ˈ t ɒ f ɪ t ə, ˈ n ɛ t oʊ f aɪ t ə /) is a division of plants (alternatively considered the subclass Gnetidae or order Gnetales), grouped within the gymnosperms (which also includes conifers, cycads, and ginkgos), that consists of some 70 species across the three relict genera: Gnetum (family Gnetaceae), Welwitschia (family Welwitschiaceae), and Ephedra (family ...
Podocarpus (/ ˌ p oʊ d ə ˈ k ɑːr p ə s / [2]) is a genus of conifers, the most numerous and widely distributed of the podocarp family, the Podocarpaceae. Podocarpus species are evergreen shrubs or trees, usually from 1 to 25 m (3 to 82 ft) tall, known to reach 40 m (130 ft) at times.
The Pinaceae (/ p ɪ ˈ n eɪ s iː ˌ iː,-s i ˌ aɪ /), or pine family, are conifer trees or shrubs, including many of the well-known conifers of commercial importance such as cedars, firs, hemlocks, piñons, larches, pines and spruces. The family is included in the order Pinales, formerly known as Coniferales.
An adult balsam woolly adelgid, a major pest in the Christmas tree industry. Many of the conifer species cultivated face infestations and death from such pests as the balsam woolly adelgid, other adelgids, and aphids. Invasive insect species, such as the pine shoot beetle and the gypsy moth, also threaten Christmas tree crops. [23]