sngo dug mo nyung

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སྔོ་དུག་མོ་ཉུང
cynanchum forrestii schltr., epilobium palustre l. [JV]

(med) Swallow worts. Willow herbs

Illustrations : Dawa 1999. 'Phrin Las 1987 (26_064) dug mo nyung mchog (26_065) dug mo nyung bod skyes. 'Jam-dpal (print p 184) dug mo nyung

sngo dug mo nyung
1. Vincetoxicum hirundinaria Medik. (Apocynaceae) White swallow wort (Wangyal 2020)
2. Vincetoxicum canescens (Willd) Decne. (Apocynaceae) Swallow wort (Dawa 1999). No description of sngo dug mo nyung is found in any medical text. However, Lhasa sman rtsi khang has identified the herb depicted here as sngo dug mo nyung (Dawa 1999)
3. Vincetoxicum forrestii (Schltr.) C.Y.Wu & D.Z.Li (Apocynaceae) Swallow wort (Kletter 2001)
4. Vincetoxicum sibiricum (L.) Decne. (Apocynaceae) Swallow wort (Molvray 1988 G,P). Reported name dug mo nyung. Cited from northern sources.
5. Periploca calophylla (Wight) Falc. (Apocynaceae) (Molvray 1988 M). Reported name dug mo nyung.
6. Cynanchum purpureum (Pall.) K.Schum. (Apocynaceae) Swallow wort (Molvray 1988 G). Reported name dug mo nyung. Cited from northern sources.
byar pan chu rtsi zhes pa'i sngo dug mo nyung
1. Epilobium angustifolium L. (Onagraceae) Rosebay willowherb, Fireweed (Kletter 2001). Synonym : sngo dug mo nyung dmar po (Wangyal 2020)
2. Epilobium cylindricum D.Don (Onagraceae) Willow herb (Kletter 2001). Synonym : sngo dug mo nyung (Wangyal 2020)
3. Epilobium latifolium L. (Onagraceae) River beauty (Dawa 2009; Kletter 2001)

sngo dug mo nyung is a herb, distinct from the small tree dug mo nyung, identified with Holarrhena pubescens. mKhyen rab nor bu accepts other plants (than the Swallow-worts), but calling them byar pan chu rtsi zhes pa'i sngo dug mo snyung, according to the classification of Byar po pan chen, and chu rtsi indicates that it grows near streams (Kletter 2001)
The images in the Medical Thangkas and the Eye Ornament correspond much more to herbaceous Vincetoxicum (sngo dug mo nyung) than the tree Holarrhena (dug mo nyung). Vincetoxicum species are members of the Dog-bane family, reputed as medicinal as well as toxic.
Johannes Schmidt (talk) 16:59, 8 April 2024 (EDT)