Chisocheton pohlianus

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Chisocheton pohlianus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Meliaceae
Genus: Chisocheton
Species:
C. pohlianus
Binomial name
Chisocheton pohlianus
Harms

Chisocheton pohlianus is a species of flowering plant belonging to the mahogany family (Meliaceae).

Contents

Distribution

It is a small, lower story, leptocaul rainforest tree from New Guinea.[ citation needed ]

Description

It is not more than 26 ft (7.9 m) in height and 2.75 in (70 mm) thick. Like all Chisocheton species it has indeterminate, pinnate leaves in this case up to 6 ft 7 in (2.01 m) in length and having as many as 28 pairs of leaflets at any given time. [1] [2] Each time the tiny circinate bud at the tip of the leaf forms a new pair of leaflets, the leaf simultaneously produces, further back, a small 2 in (51 mm) inflorescence, but not at the same spot as where a pair of leaflets are attached, but halfway between two pairs of leaflets. [3] The jury is still out as to whether these are inflorescences fused to a leaf (as in Tilia spp and Phyllobotryon spp) or whether the leaves have assumed reproductive function (as in certain Streptocarpus spp). The difficulty is in reconciling an indeterminate leaf with determinate inflorescences. [2] The flowers are tubular, about 0.5 in (13 mm) in length with 3 to ten petals, crème de menthe in color and said to have the fragrance of Cymbopogon .[ citation needed ]

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Chisocheton macrophyllus in the Mahogany family (Meliaceae) is a pachycaul rainforest tree of the East Indies and Malay Peninsula with very few upright limbs (reiterations) ultimately reaching a height of 115 feet. Each reiteration is topped by a tight rosette of once-pinnate leaves up to ten feet in length with up to 28 pairs of leaflets at any given time, each up to 15.5 inches long by 4.5 inches in width. Like all Chisocheton species, these leaves are indeterminate, forming a new pair of leaflets every few weeks or months. while the oldest pair may die. The cream-colored flowers, 1.5 inches long with 4 or 5 petals, are arranged in a thyrse up to 32 inches long, followed by pyriform capsules up to six inches in diameter with 2 to 4 seeds each the size and shape of a brazilnut.

Chisocheton polyandrus, of the mahogany family (Meliaceae), is a species of pachycaulous, unbranched trees variously called "palmoids", "maypole trees" or "Corner model trees" occurring among several families of unrelated trees.

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References

  1. Fisher, Jack B. (June 2002). "Indeterminate Leaves of Chisocheton (Meliaceae): Survey of Structure and Development". Botanical Journal of the Linnean Society. 139 (2): 207–221. doi:10.1046/j.1095-8339.2002.00050.x. Under the heading "Mature Adult Leaf"
  2. 1 2 Stevens, P.F. (May 20, 1975). Review of Chisocheton (Meliaceae) in Papuasia. Canberra, Australia: C.S.I.R.O. p. 3.
  3. Mabberley, D.J.; Pannell, C.M.; Sing, A.M. (1995). "meliaceae". Flora Malesiana. 12 (1): 152.