Triphysaria
(from treis, three, and physa, a bladder; alluding to the three saccate segments of the lower lip of the corolla). SYN. Oncorrhynchus. ORD. Scrophularineae. A genus comprising about twenty-three species of hardy, annual, North American herbs, now regarded, by Bentham and Hooker, as synonymous with Orthocarpus. Flowers yellow or purplish, solitary in the axils of the bracts, disposed in terminal spikes; corolla with a conspicuously trisaccate lip very much larger than the slender, straight galea. Leaves alternate or nearly opposite. T. versicolor, the only species introduced, requires ordinary treatment.
T. versicolor (various-coloured). fl. cream-coloured, changing to rose-purple; lip of the corolla not more than a quarter the length of the densely pubescent tube. June. l. incised at apex; segments few, linear-setaceous. h. 9in. or more. 1837. Plant fastigiately much-branched. The proper name of this annual is Orthocarpus erianthus roseus.