O Sarissa do Manual do Caçador Gigante corresponde à sua descrição:
This spearlike weapon is about 15 feet long. Its unwieldy length is counterbalanced by a heavy brass base. A sarissa provides extended reach—tripling your reach rather than doubling it. A Medium wielder would threaten spaces 10 to 15 feet away, but not adjacent squares or squares 5 to 10 feet away (as with a typical reach weapon).
Ênfase minha para mostrar seu uso de 'alcance estendido' na descrição.