unguiculate
Concise Oxford English Dictionary © 2008 Oxford University Press:
unguiculate /ʌŋˈgwɪkjʊlət/
▶adjective
- 1 Zoology having one or more nails or claws.
- 2 Botany (of a petal) having a narrow stalk-like base.
– origin C19: from mod. L. unguiculatus, from L. unguiculus ‘fingernail, toenail’, dimin. of unguis ‘nail’.
'unguiculate' also found in these Oxford entries:

