hortus siccus
Concise Oxford English Dictionary © 2008 Oxford University Press:
hortus siccus /ˌhɔːtəs ˈsɪkəs/
▶noun (pl. horti sicci /ˌhɔːtʌɪˈsɪkʌɪ, -tiː, -kiː/) a herbarium.
– origin L., lit. ‘dry garden’.
'hortus siccus' also found in these Oxford entries:

