Overview

Distribution

Range Description

The species is largely confined to southern China, with restricted populations in Lao Cai and Yen Bai just over the border into northern Viet Nam. The family is monotypic.
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N and W Guangxi, S Guizhou, SE Yunnan [N Vietnam].
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Physical Description

Morphology

Description

Trees to 20 m tall, d.b.h. to 60 cm. Young branches, stipules, rachises, petioles, and inflorescences densely covered with yellowish white glands and pubescence. Branchlets densely covered with brownish yellow lenticels. Stipules leaflike, 3-6 mm, sessile. Petiole 3-4 cm; leaf blade 15-30(-40) cm, rachis sulcate and pubescent; leaflets (7 or)9 or 11(or 13), abaxially pubescent and glandular on veins or vein axils, adaxially pubescent on midvein; lateral leaflets oblong-lanceolate, proximal ones shorter, oblique, elliptic-ovate; terminal leaflet lanceolate; secondary veins (9-)14-20 on each side of midvein. Inflorescence branches 15-30(-38) cm. Nutlets brownish yellow when mature, obpyriform, slightly compressed, 2-3 mm, with grayish brown glands, 4-ribbed on each side; wings ± rounded to ellipsoid, 5-8 mm wide; mesocarp brown, woody, irregularly verrucose; endocarp white. Seeds fleshy, elliptic, ca. 2 mm. Fl. Oct-Jan, fr. Jul-Aug.
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Type Information

Isotype for Rhoiptelea chiliantha Diels & Hand.-Mazz.
Catalog Number: US 1550909
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Card file verified by examination of original publication
Preparation: Pressed specimen
Collector(s): Y. Tsiang
Year Collected: 1930
Locality: Tu-schan near Patschai., Kweichow, China, Asia-Temperate
  • Isotype: Diels, F. L. E. & Handel-Mazzetti, H. R. E. 1932. Repert. Spec. Nov. Regni Veg. 30: 77.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Occurring as a canopy tree in montane forest.

Systems
  • Terrestrial
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Hill slopes, valleys, streamside woods; 700-2500 m.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Rhoiptelea chiliantha

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Rhoiptelea chiliantha

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
VU
Vulnerable

Red List Criteria
B1+2c

Version
2.3

Year Assessed
1998
  • Needs updating

Assessor/s
World Conservation Monitoring Centre

Reviewer/s

Contributor/s

History
  • 1997
    Rare
    (Walter and Gillett 1998)
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Population

Population
Trees generally occur singly or in small groups. The species is a dominant element where recolonisation is taking place after forest clearance.
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Wikipedia

Rhoiptelea

Rhoiptelea is a monotypic genus of flowering plants in the Juglandaceae family. It contains a single species, Rhoiptelea chiliantha, commonly known as the horsetail tree. This genus was previously recognized in its own family, Rhoipteleaceae, but the APG III system of 2009 placed it in the Juglandaceae family. Rhoiptelea chiliantha is native to southwest China and north Vietnam and lives at the elevation of 700-1600m in mountainous areas. The trees are wind-pollinated, the flowers arranged in large sagged panicles usually 32 cm long like horse tails, and the fruit is a small botanical nut with rounded wings. The leaves are pinnately compound and papery. The trees are usually 17 m high and with 40 cm diameter. It is a protected species of China.[1]

References[edit source | edit]


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Notes

Comments

The fine wood is used in building and to make furniture and utensils.
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