According to Kew Species Profiles[KSP]
Kew Species Profiles
- General Description
On one of Kew's collecting trips to Pakistan, 100 plants of the rare Jasminum leptophyllum were discovered. No other populations are known to local expedition members.
This rare and elegant jasmine was discovered recently in Pakistan. It makes a free-standing shrub that bears lovely yellow, scented flowers from mid-late summer.
- Species Profile
Geography and distribution
Restricted to the Palas Valley of northern Pakistan, not far from the capital Islamabad, at the western extreme of the Himalaya at 1,500–2,000 m.
From the wild to the garden
Jasminum leptophyllum was recently discovered in a small area of northern Pakistan, the Palas Valley, by a Pakistani botanist, Rubina Rafiq.
In 1995 a team from Kew visited the valley to collect seed, which was germinated successfully at Kew. As part of the agreement with the Pakistani authorities it was agreed that the plants would only be distributed to certain authorised botanic gardens, in accordance with the international Convention on Biological Diversity (CBD).
This species is therefore not available commercially at present. However, it can be admired growing happily at Kew, Wakehurst and the Sir Harold Hillier Gardens and Arboretum in Hampshire, and so far it seems to have adapted well to the English climate and can withstand a few degrees of frost.
Jasminum leptophyllum is a much-branched shrub, 1 m high, with dark grey branches. It has narrow evergreen or semi-evergreen dark green leaves, 3 cm long.
The flowers, which appear in mid-late summer, are bright yellow, about 2 cm long, and scented.
The fruit is a black berry.
Threats and conservation
Although Jasminum leptophyllum is not listed on the IUCN Red List, it is potentially at risk due to its small population size. There have been proposals to flood the Palas Valley for a hydro-electric scheme, which would destroy its entire known habitat.
People living in the Palas Valley of Pakistan burn the leaves of Jasminum leptophyllum to repel fleas. However, members of the Kew expedition to Pakistan did not find this practice to deter the voracious fleas at all!
Jasminum leptophyllum is cultivated as an ornamental at Kew, Wakehurst and the Sir Harold Hillier Gardens and Arboretum in Hampshire and has the potential to be more widely grown.
Millennium Seed Bank: Seed storage
The Millennium Seed Bank Partnership aims to save plant life worldwide, focusing on plants under threat and those of most use in the future. Seeds are dried, packaged and stored at a sub-zero temperature in Kew's seed bank vault at Wakehurst.
Number of seed collections stored in the Millennium Seed Bank:OneGermination testing:75% germination was achieved on a 1% agar medium, at a temperature of 20°C, on a cycle of 8 hours daylight/16 hours darkness.
Jasminum leptophyllum is propagated from seed or cuttings.
This species at Kew
There is a specimen of Jasminum leptophyllum growing just inside Elizabeth Gate at Kew, and others in the Rock Garden and against various warm walls in the garden. It can also be seen at Wakehurst.
Pressed and dried specimens of Jasminum leptophyllum are held in Kew’s Herbarium, where they are available to researchers from around the world, by appointment.
- In dry crevices in metamorphic rock.
- Not evaluated according to IUCN Red List criteria.
First published in Atti Soc. Ital. Sci. Nat. Mus. Civico Storia Nat. Milano 1(1): 5 (2014)
-  The Plant List (2010). Jasminum leptophyllum.
-  World Checklist of Selected Plant Families (2010). Jasminum leptophyllum. The Board of Trustees of the Royal Botanic Gardens, Kew.
-  Green, P. & Miller, D. (2009). The Genus Jasminum in Cultivation. Royal Botanic Gardens, Kew.
-  Green, P. & Miller, D. (2009) The genus Jasminum in cultivation . Kew Publishing, Royal Botanic Gardens, Kew.
-  Sinnott, M., Rafiq, R. & Green, P. (2000). Jasminum leptophyllum (Oleaceae). Curtis’s Bot. Mag. 17(1): 29-34.
-  Rafiq, R. A. (1996). Three new species from Palas Valley, District Kohistan, North West Frontier Province, Pakistan. Novon 6(3): 295-297.
International Plant Names Index
The International Plant Names Index (2016). Published on the Internet http://www.ipni.org
[A] © Copyright 2016 International Plant Names Index. https://creativecommons.org/licenses/by/3.0
Kew Species Profiles
Kew Species Profiles
World Checklist of Selected Plant Families
World Checklist of Selected Plant Families(2016). Published on the Internet http://apps.kew.org/wcsp/
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[E] © Copyright 2016 International Plant Names Index and World Checkist of Selected Plant Families. https://creativecommons.org/licenses/by/3.0