what is Agkistrodon acutus ?

Agkistrodon acutus has a big head, triangle shape. There is a short and upwarp gibbosity formed by rostral and nose scales in rostral part. Head dorsal is blackish-brown, with large symmetrical scales and dimple. Its back  body is nut brown and dark brown, with a large square plaque in the middle of back. Ventral is white, with interlaced patches of dark brown. Its bodily form is short, the longest male 1335 +206 mm, females 1238 +165 mm. 
 It has been long said of medicinal value of Agkistrodon acutus, but as the main drug acutus, specifically for medical research of rheumatoid arthritis has not been the first time. Experts believe that Agkistrodon acutus venom has the function of expelling wind and remiving damness, anticoagulation and antithrombotic, removing fibrin, lower blood viscosity, expansion of blood vessels, improving microcirculation and reduce blood lipids. The medicinal value of Agkistrodon acutus venom is major applications in the treatment of rheumatic diseases.