Hoya publicalyx  Red Buttons is a cultivar of Hoya pubicalyx. 
 
Short description :
Hoya pubicalyx ‘Red Buttons’
	
The flowers are dark purple corollas and red coronas 
	
The plant has purple or reddish splashes on green leaves.
 
For detailed information about Hoya pubicalyx, please check the link below :
 
https://www.hoya-obsession.com/post/hoya-pubicalyx