Ophiopogon planiscapus cultivated  
Photos from Ace Mondo Ltd. <www.acemondo.co.nz> were taken in 2008 by owner Peter Nielson near Tauranga, New Zealand (North Island).  Used by permission. 
1a, b.  Two below, green-leaved form, Ace Mondo. 
2a, b.  Above and below left, Ophiopogon planiscapus "Black Dragon," Ace Mondo.
3. Below, "Nigrescens," photo from Wikipedia.
3. Above, from Ace Mondo. 
4.  Left.  Used by permission, courtesy Missouri Botanical Garden PlantFinder. 
5. Below.  "Nigrescens," purchased from Tidwell Nurseries (Georgia), October 2010.