Whether her department has conducted or initiated a study on the critically endangered cycad Encephalartos dyerianus; if so, (a) how many are left in the wild, (b) how many mature plants have been removed illegally in (i) 2008 (ii) 2009, (iii) 2010 and (iv) 2011 and (c) what steps has she taken to protect the existing plants in Limpopo province?