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Piptanthus
Piptanthus nepalensis, Nepal
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Faboideae
Tribe:	Sophoreae
Genus:	Piptanthus Sweet (1828)
Species
Piptanthus nepalensis (Hook.) Sweet Piptanthus tomentosus Franch.
The range of Piptanthus.

Piptanthus is a genus of flowering plants in the legume family, Fabaceae. It includes two species of shrubs native to the Himalayas, Tibet, Myanmar, and western China. They grow in montane grassland, thicket, and forest margins.

The genus belongs to subfamily Faboideae. It is most closely related to the genera Anagyris, Thermopsis (Asiatic spp.), and Vuralia.

Species

Piptanthus comprises the following species:

• Piptanthus nepalensis is native to Burma, Bhutan, China, India, and Nepal. It is a shrub which is variable in morphology, especially in the arrangement of hairs on its leaves and other parts, so it has frequently been divided into multiple species. This Himalayan shrub is evergreen in mild sheltered sites, semi-evergreen elsewhere, losing its leaves in hard frost but soon recovering again in spring. The growth is upright and flexible, allowing plants to be trained on warm walls where they are sheltered and flower more profusely. The blooms are large and bright yellow, like those of laburnum but in short upright clusters. Although good drainage is important, make sure plants are watered in summer to prevent sudden die-back.
• Piptanthus tomentosus is endemic to China. It can be distinguished from P. nepalensis by the coating of reddish hairs on its fruit.

References

1. ^ Piptanthus Sweet. Plants of the World Online. Retrieved 14 September 2023.
2. ^ Turner BL (1980). "Revision of the genus Piptanthus (Fabaceae: Thermopsideae)". Brittonia. 32 (3): 281–285. Bibcode:1980Britt..32..281T. doi:10.2307/2806715. JSTOR 2806715.
3. "Piptanthus". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 25 January 2018.
4. "ILDIS LegumeWeb entry for Piptanthus". International Legume Database & Information Service. Cardiff School of Computer Science & Informatics. Retrieved 15 May 2014.
5. USDA; ARS; National Genetic Resources Program. "GRIN species records of Piptanthus". Germplasm Resources Information Network—(GRIN) . National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 15 May 2014.
6. "The Plant List entry for Piptanthus". The Plant List. Royal Botanic Gardens, Kew and the Missouri Botanical Garden. 2013. Retrieved 15 May 2014.
7. "Piptanthus nepalensis". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 25 January 2018.
8. Piptanthus nepalensis. Flora of China.
9. Piptanthus tomentosus. Flora of China.

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