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Parmelia Hypoleucites
''Punctelia hypoleucites'', commonly known as the southwestern speckled shield lichen, is a species of foliose lichen, foliose (leafy) lichen in the family Parmeliaceae. First formally described by Finnish botanist William Nylander (botanist), William Nylander as a species of ''Parmelia (fungus), Parmelia'', it was transferred to the genus ''Punctelia'' in 1982. The lichen is found in Africa, North America, and South America, where it corticolous lichen, grows on the bark of both hardwood and coniferous trees. Its greenish-grey thallus is covered with tiny white pseudocyphellae – minute holes in the thallus surface that facilitate gas exchange. Some macroscopic features that help distinguish this species from other related members of the genus include the presence and the structure of the apothecia (sexual reproductive organs), the absence of Asexual reproduction, asexual surface propagules, and the light brown color of the thallus undersurface. Chemically, the presence of l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona Cypress
''Cupressus arizonica'', the Arizona cypress, is a North American species of tree in the cypress family Cupressaceae, native to the southwestern United States and Mexico. Populations may be scattered rather than in large, dense stands. Description ''Cupressus arizonica'' is a coniferous evergreen tree with a conic to ovoid-conic crown. It grows to heights of , and its trunk diameter reaches . The foliage grows in dense sprays, varying from dull gray-green to bright glaucous blue-green. The leaves are scale-like, 2–5 mm long, and produced on rounded (not flattened) shoots. The seed cones are globose to oblong, 15–33 mm long, with 6 or 8 (rarely 4 or 10) scales, green at first, maturing gray or gray-brown about 20–24 months after pollination. The cones remain closed for many years, only opening after the bearing branch is killed (in a wildfire or otherwise), allowing the seeds to colonize the bare ground exposed by the fire. The male cones are 3–5 mm long, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
