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''Pittosporum kirkii'' is a glabrous evergreen perennial shrub that reaches up to in height and possesses distinctive coriaceous, fleshy, thick leaves.〔Cooper RC 1956 The Australian and New Zealand species of ''Pittosporum''. ''Annals of the Missouri Botanical Garden'' 43: 87–188〕〔Myron KJ 2012 ''Pittosporum kirkii'': autecology of an endemic shrub epiphyte. Unpubl M.Sc Thesis. Hamilton, University of Waikato|url=http://researchcommons.waikato.ac.nz/handle/10289/6621〕 It is one of four shrubs endemic to New Zealand that frequently displays an epiphytic lifestyle. ''P. kirkii'' is commonly epiphytic, perched amongst nest epiphytes in the canopies of emergent or canopy trees in old-growth forest; however, it can be observed occasionally growing on the ground or over rocks (in a rupestral lifestyle). The type locality of ''P. kirkii'' is Great Barrier Island. It was first described by Joseph Dalton Hooker from material collected by Thomas Kirk, published in 1869.〔Cheeseman et al. 1914 Illustrations of the New Zealand Flora. Vol 1 Pl. 17. Wellington, NZ, John Mackay, Govt. Printer. 496 p.〕 The initial brief description titled ''Pittosporum n. sp.?'' by Thomas Kirk was published in his paper on Great Barrier Island in 1868. This description along with herbarium specimens were sent to Dr. J. D Hooker at Kew Gardens in 1868, and he collaborated to name it after T. Kirk, by giving it the specific epithet ''kirkii'' within the publication〔 that was otherwise written by Kirk. Kirk's (1869) description reads:〔 ''Pittosporum Kirkii'', Hook. f., n. sp., A handsome, laxly-branched shrub, 3–15 feet high, branchlets stout, rigid, ascending; bark reddish-purple, leaves alternate, crowded or whorled, linear-obovate, acute or obtuse, 2-5 inches long, gradually narrowed into rather broad purple petioles, excessively coriaceous, glabrous, pale-green above, lighter below, midrib stout, prominent and cuiously flattened beneath; flowers terminal in 3-7 flowered umbels, peduncles rather stout, decurved; sepals broadly lanceolate with membranous margins; petals ligulate, bright yellowe, recurved; capsules erect, clustered, glabrous, elliptic, 1-1 1/2 inches long, obtuse, 2-valved, remarkably compressed, but the valves contract in a curious manner when the capsule bursts. An illustration in Cheeseman et al. (1914) (1 ) was the first to highlight the male and female reproductive structures (dioecy) of ''P. kirkii''. ''Pittosporum kirkii'' has a known restricted geographical range in the North Island, extending from Mangonui in Northland (ca. 35o0'1S) to Raetihi and in the Matemateaonga Range south of Ohakune (ca. 39o3'8S) with a mean altitude of 471 (± 0.11) meters above sea level.〔 It is also notably abundant on the offshore islands of Great Barrier and Little Barrier.〔 ''Pittosporum kirkii'' is currently listed as in decline and is nowhere common throughout its range.〔de Lange et al. 2009 Threatened and uncommon plants of New Zealand (2008 revision). ''New Zealand Journal of Botany'' 47: 61–96.〕〔Young M 2010 ''Pittosporum kirkii'' on Mount Tamahunga. ''Auckland Botanical Society'' 65: 85–147.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pittosporum kirkii」の詳細全文を読む スポンサード リンク
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