BOOMERANG TRIGGER PLANT Stylidium breviscapum 186 miles east of Merredin, October 1955 (ACC 5448A/249 ) Stylidium breviscapum R. Br. BOOMERANG TRIGGER PLANT Creeping perennial herb; 0.025-0.2m high; elevated up to 7cm above soil by wiry stilt roots; fl. white with red markings, Aug-Dec. Laterite soils or sandy soils over granite, sheltered areas near rocky outcrops, stony slopes. Distribution: SW: AW, ESP, GS, JF, MAL, SWA, WAR. (G. Paczkowska & A. R. Chapman, p. 548.)