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Ailanthus vietnamensis

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Ailanthus vietnamensis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Simaroubaceae
Genus: Ailanthus
Species:
A. vietnamensis
Binomial name
Ailanthus vietnamensis
H.V. Sam & Noot

Ailanthus vietnamensis is a deciduous tree in the family Simaroubaceae, endemic to the wet tropics of Vietnam.[1]

Description

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Ailanthus vietnamensis is a monoecious tree that can grow 8 meters in height with a diameter at breast height of 20 centimeters. The bark is yellowish-grey and smooth, and the twigs are stout, and are yellowish-green in color. The lenticles are ochre-colored, and the leaf scars are large and heart-shaped. Leaves are spirally arranged pinnately compound leaves up to 45 cm cm long, and are clustered at the end with 6-10 pair of opposite leaves. The petiole connecting the leaves are 4-11 centimeters long and are puberulous. The leaflets are entire, and are narrow ovate by 5–11 by 1.5-3.5 cm. They are mostly smooth above and are more pubescent beneath. The leaflets are apex acuminate with an obtuse tip, and the lateral nerves are 6-18 pairs. The midrib and lateral nerves are prominent on the underface and are pubescent, and usually have black, round elliptical glands especially on the nerves.[2]

The inflorescences axillary panicles can be up to 19 centimeters long, and can be puberulous to pubescent. The bisexual flowers are up to 1-3 millimeters and the pedicles are densely hairy. The fruit is a samara, which are narrowly elliptic and can be 7–10 by 1.7-2.4 centimeters away from the flower on a slender stalk. Thin wings surround each single flat seed.[2]

References

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  1. ^ "Ailanthus vietnamensis H.V.Sam & Noot. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2024-05-05.
  2. ^ a b Van Sam, Hoang; Noteboom, Hans (18 Dec 2007). "Ailanthus Vietnamensis (Simaroubaceae): a new species from Vietnam". Blumea. 52 (3): 555–558. doi:10.3767/000651907X608918 – via ResearchGate.