Cardamine papuana O.E.Schulz

Perennial, rhizomatous, glabrous (rarely pubescent) herb with 15-50 cm high, erect or ascending shoots, appearing solitarily or with 2 or 3 together. Stems unbranched or with a few rather long branches in the upper part. Leaves tripartite or unifoliate (side-lobes reduced); basal leaves (often not present) up to 12 cm long with 9 cm long petioles; cauline leaves rather few, up to 8 cm long, without or with only slightly auriculate, 2-8 cm long petioles; terminal leaflet ovatotriangular, acute to acuminate, at base cuneate or rounded (rarely truncate), distantly serrate-dentate, 3-12 by 1-4 cm on 5-20 mm long petiolules (in partite leaves); lateral leaflets ovate, acute, sparsely serrate or dentate, 0.5-3 by 0.2-2 cm on 1-4 mm long petiolules. Racemes terminal (but often surpassed by upper leaves) with 5—15 flowers on 0.5-5 cm long peduncles, in fruit condensed or loose, 1-6 cm long; pedicels straight, erecto-patent, 5-12 mm long. Sepals green with hyaline margins, oblong, 2.5-4 mm long. Petals white, broadly spathulate, usually notched, 2 or 3 times longer than sepals, 8-12 mm long, ± half as broad. Stamens 6, with linear filaments; anthers c. 0.8 mm long. Ovary cylindrical with indistinctly demarcated style and somewhat expanded stigma. Siliqua straight, linear, 20-40 by 1.5-2 mm; style 0.5-1.7 by 0.3-0.5 mm. Seeds dark to light brown, oblong in outline, 1.7-2 by 1-1.3 mm, smooth.

Wet cliffs, rocky banks of streams in forests; 500-3100 m.