From Lexicanum

Planetary Summary

Map	Imperial Forge World Data		Planetary Image
	Name:	Ryza
	Segmentum:	Segmentum Solar
	Sector:	Unknown
	Subsector:	Unknown
	System:	Unknown
	Population:	Unknown
	Affiliation:	Imperium
	Production Grade:	I-Prima
	Tithe Grade:	Aptus Non

Ryza is a formidable Forge World of the Imperium, known for its plasma weapons and vehicles mounted with them, such as the feared Leman Russ Executioner (which is no longer produced by any other Forge World)^1,3 and the Stormblade super-heavy tank (which was first developed on Ryza)⁴. The Forge World is home to the Collegia Titanica Legio Crucius (Warmongers)². The world has been attacked by an Ork-Waaagh in the past, but held².

Sources

• ¹Imperial Armour, page 16
• ²Imperial Armour I, page 8
• ³Imperial Armour I, page 61
• ⁴Imperial Armour I, page 99