Found this thread (Deleting a UNIX directory with a hyphen in the name) but no joy. The directory is clearly there, but no method of addressing it or deleting it seem to work -- note even by inode.
This on Oracle Linux 6 (derivative of RHEL) Note the directory named '-p'
[root@vbpsprod6 /]# ls -li |grep p
2621441 drwxr-xr-x. 2 root root 4096 May 7 2015 cgroup
2359297 drwxr-xr-x. 4 root root 4096 Aug 25 10:02 opt
1835010 drwxr-xr-x. 2 root root 4096 Aug 25 10:14 –p
1 dr-xr-xr-x 93 root root 0 Aug 25 10:34 proc
393217 drwxrwxrwt. 3 root root 4096 Aug 25 10:29 tmp
[root@vbpsprod6 /]# find . -inum 1835010 -exec ls -li {} \;
total 0
find: `./proc/3259/task/3259/fd/5': No such file or directory
find: `./proc/3259/task/3259/fdinfo/5': No such file or directory
find: `./proc/3259/fd/5': No such file or directory
find: `./proc/3259/fdinfo/5': No such file or directory
[root@vbpsprod6 /]# rm -- -p
rm: cannot remove `-p': No such file or directory
[root@vbpsprod6 /]# find . -type d -name '-p' -delete
[root@vbpsprod6 /]# ls -li |grep p
2621441 drwxr-xr-x. 2 root root 4096 May 7 2015 cgroup
2359297 drwxr-xr-x. 4 root root 4096 Aug 25 10:02 opt
1835010 drwxr-xr-x. 2 root root 4096 Aug 25 10:14 –p
1 dr-xr-xr-x 93 root root 0 Aug 25 10:34 proc
393217 drwxrwxrwt. 3 root root 4096 Aug 25 10:29 tmp
[root@vbpsprod6 /]#