Pratia Gaudich.
Fls 5-merous, solitary or in racemes, often unisexual; receptacle adnate to ovary, calyx-lobes persistent. Corolla oblique, split to base at back; upper lip 2-, lower 3-lobed. Staminal tube free from corolla except sts at very base. Anthers connate, lower pair awn-tipped. Ovary 2-celled, ovules ∞, stigma 2-lobed; seeds minute, us. ∞. Herbs, mostly prostrate, rooting at nodes, with alt. toothed lvs and us. acrid sap. Genus of some 20 spp. of Australia, Asia, N.Z., S. America.
Key
3
Laminae mostly 15-25 × 10-15 mm.; margins bluntly sinuate-dentate; peduncles < or little > lvs
Laminae mostly not up to 15 × 15 mm.; margins rather abruptly to coarsely toothed; peduncles us. distinctly > lvs