# Cynoglossum

Cynoglossum is a genus of small-flowered plants in the family Boraginaceae (borage family). It includes 81 species native to Eurasia, Africa, New Guinea, and Australia.
Cynoglossum officinale, the common hound's-tongue, is a native of Asia, Africa, and Europe. It has been introduced into North America, and it is considered to be a troublesome weed because its burs stick to the wool of sheep and to other animals. Ingestion of this plant can also lead to photosensitivity in grazing animals.

## Species

As of July 2024, there are 81 accepted species in the genus:
* Cynoglossum aequinoctiale T.C.E.Fr.
* Cynoglossum alpestre Ohwi
* Cynoglossum alpinum (Brand) Riedl
* Cynoglossum alticola Hilliard & B.L.Burtt
* Cynoglossum amabile Stapf & J.R.Drumm. — Chinese hound's tongue
* Cynoglossum amplifolium Hochst. ex A.DC.
* Cynoglossum asperrimum Nakai
* Cynoglossum australe R.Br.
* Cynoglossum × austriacum Rech.
* Cynoglossum austroafricanum Hilliard & B.L.Burtt
* Cynoglossum baeticum Sutorý
* Cynoglossum barbaricinum Arrigoni & Selvi
* Cynoglossum birkinshawii J.S.Mill.
* Cynoglossum borbonicum (Lam.) Bory
* Cynoglossum bottae Deflers
* Cynoglossum brandii Sutorý
* Cynoglossum castaneum Riedl
* Cynoglossum celebicum Brand
* Cynoglossum cernuum Baker
* Cynoglossum cheirifolium L.
* Cynoglossum cheranganiense Verdc.
* Cynoglossum clandestinum Desf.
* Cynoglossum coeruleum Hochst. ex A.DC.
* Cynoglossum columnae Ten.
* Cynoglossum creticum Mill. — blue hound's tongue
* Cynoglossum dalianum Sutorý
* Cynoglossum densefoliatum Chiov.
* Cynoglossum dioscoridis Vill.
* Cynoglossum divaricatum Stephan ex Lehm.
* Cynoglossum formosanum Nakai
* Cynoglossum gansuense Y.L.Liu
* Cynoglossum germanicum Jacq. — green hound's tongue
* Cynoglossum glabellum Riedl
* Cynoglossum hanangense Verdc.
* Cynoglossum hellwigii Brand
* Cynoglossum hispidum Thunb.
* Cynoglossum holosericeum Steven
* Cynoglossum inyangense E.S.Martins
* Cynoglossum javanicum (Lehm.) A.DC.
* Cynoglossum kandavanense (Bornm. & Gauba) Akhani
* Cynoglossum karamojense Verdc.
* Cynoglossum krasniqii Wraber
* Cynoglossum lanceolatum Forssk.
* Cynoglossum × legionense Rothm.
* Cynoglossum lowryanum J.S.Mill.
* Cynoglossum macrocalycinum Riedl
* Cynoglossum macrolimbe Riedl
* Cynoglossum magellense Ten.
* Cynoglossum maghrebicum Sutorý
* Cynoglossum mathezii Greuter & Burdet
* Cynoglossum mediterraneum Sutorý
* Cynoglossum meeboldii Brand
* Cynoglossum microglochin Benth.
* Cynoglossum × modorense Rech.
* Cynoglossum monophlebium Baker
* Cynoglossum montanum L.
* Cynoglossum natolicum (Bornm.) Sutorý
* Cynoglossum nebrodense Guss.
* Cynoglossum nova-guineese Riedl
* Cynoglossum obtusicalyx Retief & A.E.van Wyk
* Cynoglossum officinale L. — common hound's tongue
* Cynoglossum papuanum Schltr. ex O.Brand
* Cynoglossum pitardianum Greuter & Burdet
* Cynoglossum pustulatum Boiss.
* Cynoglossum rochelia A.DC.
* Cynoglossum sabirense (R.R.Mill & A.G.Mill.) J.R.I.Wood
* Cynoglossum semnanicum Khat.
* Cynoglossum seravshanicum (B.Fedtsch.) Popov
* Cynoglossum spelaeum Hilliard & B.L.Burtt
* Cynoglossum sphacioticum Boiss. & Heldr.
* Cynoglossum stewartii Kazmi
* Cynoglossum timorense Riedl
* Cynoglossum torvum Dimon & M.A.M.Renner
* Cynoglossum trinervium (Duthie) Greuter & Stier
* Cynoglossum trollii Melch.
* Cynoglossum tsaratananense J.S.Mill.
* Cynoglossum tubiflorum (Murb.) Greuter & Burdet
* Cynoglossum ukaguruense Verdc.
* Cynoglossum vanense Sutorý
* Cynoglossum viridiflorum Pall. ex Lehm.
* Cynoglossum wallichii G.Don
* Cynoglossum watieri (Batt. & Maire) Braun-Blanq. & Maire
* Cynoglossum wildii E.S.Martins
* Cynoglossum yemenense (R.R.Mill & A.G.Mill.) Verdc.
* Cynoglossum zeylanicum (Sw. ex Lehm.) Thunb. ex Brand — Ceylon hound's tongue

### Formerly placed here

* Oncaglossum pringlei (Greenm.) Sutorý (as Cynoglossum pringlei Greenm.)