(Acanthaceae) Phlogacanthus curviflorus (Nees) Nees

Local name(s): (Hom xang)

Medicinal use(s): treat malaria, fever 

Part(s) used: root

Field Characters: Large shrub, inflorescence erect, terminal, pink-purple when young. Fruit a capsule, dry, in a racemous setting.

Locality: Oudomxay, Muang Xay District, Donxay Village, Medicinal Biodiversity Preserve, about 3 km south of city. GPS reading: 20o 40.032’ N; 102o 00.133’ E.

Habitat: Broadleaved, mixed evergreen lowland tropical rainforest on a mountain slope.

Altitude: 730 m asl. 

Collector(s): D.D. Soejarto, K. Sydara, M. Xayvue 

Collection number(s): DDS 15081

Collection Date: September 25, 2014


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Local name(s): 

Medicinal use(s): 

Part(s) used: 

Field Characters: Large shrub, 2 m tall, terminal racemes upright, pink overall, inner surface of corolla lobes pale yellow, leaves large.

Locality: Oudomxay, Muang Xay District, Donxay Village, Medicinal Biodiversity Preserve, about 3 km south of city.

GPS reading: 20o 39.939’ N; 102o 00.16’ E.

Habitat: Forest trail on the lower side of a mountain slope, in a tropical rain forest, near Guard cabin.

Altitude: 684 m asl. 

Collector(s): D.D. Soejarto, K. Sydara, M. Xayvue 

Collection number(s): DDS 15385

Collection Date: November 16, 2018

Additional information:  

Voucher specimen is in deposit at the Field Museum (F) Herbarium, Chicago, USA under accession no. 2314154; 2326961 .
Synonyms, images, taxonomic description: 
Plants of the World onlineFlora of China Vol. 19 Page 475GBIF | Global Biodiversity Information Facility

Useful references:


Devi M, Bordoloi S, Pathak K, et al. (2024). Phlogacanthus curviflorus (WALL)NEES: An insight into its expository traditional uses and extensive phytochemistry. In book: Current Trends and Advances in Life Science Research (pp.101-114). Publisher: Pandu College Publication Cell, Pandu College, Guwahati, India. https://www.researchgate.net/publication/380880996_Phlogacanthus_curviflorus_WALLNEES_An_insight_into_its_expository_traditional_uses_and_extensive_phytochemistry 
Li J, Meng X, YIin C, et al. Antimalarial and neuroprotective ent-abietane diterpenoids from the aerial parts of Phlogacanthus curviflorus. Chinese Journal of Natural Medicines 2023,  volume 21, issue 8, pages 619-630. https://doi.org/10.1016/S1875-5364(23)60464-9 .