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They cover an area of 6,600 km 2 (2,500 sq mi) on the leeward side of the main islands and the summits of Niʻihau and Kahoʻolawe. These forests are either seasonal or sclerophyllous. [2] Annual rainfall is less than 127 cm (50 in) and may be as low as 25 cm (9.8 in). [4] The rainy season there lasts from November to March. [5]
Pages in category "Trees of Hawaii" The following 119 pages are in this category, out of 119 total. This list may not reflect recent changes. A. Acacia koa;
They cover an area of 6,700 km 2 (2,600 sq mi) in the windward lowlands and montane regions of the islands. [1] Coastal mesic forests are found at elevations from sea level to 300 m (980 ft). [ 2 ] Mixed mesic forests occur at elevations of 750 to 1,250 m (2,460 to 4,100 ft), while wet forests are found from 1,250 to 1,700 m (4,100 to 5,580 ft).
ʻŌhiʻa trees grow easily on lava, and are usually the first plants to grow on new lava flows. Metrosideros polymorpha is commonly called a lehua tree, or an ʻōhiʻa lehua, or simply an ʻōhiʻa; all are correct, [6] although ʻōhiʻa is also used to refer to the tomato as well as certain varieties of sugarcane and taro. [7]
It grows in areas that receive 500–3,800 mm (20–150 in) of annual rainfall. Like other members of its genus, ʻiliahi is a root hemi-parasite , deriving some of its nutrients from the host plant; common hosts include koa ( Acacia koa ), koaiʻa ( Acacia koaia ), and ʻaʻaliʻi ( Dodonaea viscosa ).
Wiliwili trees grow to a height of 4.5–9 m (15–30 ft) with a gnarled and stout trunk that reaches 0.3–0.9 m (0.98–2.95 ft) in diameter. The bark is smooth, slightly fissured, and covered in gray or black spines up to 1 cm (0.39 in) in length.
The plant communities include open shrublands, grasslands, and deserts.Shrubland species include ʻāheahea (Chenopodium oahuense), ʻōhelo ʻai (Vaccinium reticulatum), naʻenaʻe (Dubautia menziesii), and ʻiliahi (Santalum haleakalae).
The total population of G. brighamii is between 15 and 19 trees. There are only two plants in the wild on Oʻahu and one on the Big Island. [5] Major threats to the survival of this species include loss of dry forest habitat and the establishment of invasive species, such as fountain grass (Pennisetum setaceum).