Corydalis leptocarpa

Decumbent annual or perennial herbs, stout 10-30 cm tall. Stem sparsely branched, several arising from the cluster of slender fibrous roots, branches dense, striate, weak, slender and glabrous. Root stocks simple taproot, with covered with small traces petiole bases. Radical leaves, triangular-oblong in outline, biternate, about 4-8 x 2.5-5 cm across, base vaginate and slightly sheathed, grabrous above, glaucous beneath, veins prominent, petiole about 5-9 cm long, with 3-5, triangular or broadly lanceolate-oblong, shaped lateral and terminal pinnae, ternate, base attenuate, margins crenately dentate also deeply lobed, apex obtuse, petiolules short or subsessile, about 2-6 mm long. Cauline leaves alternate, 2 or more, usually smaller than the radical leaves. Inflorescence racemes, axillary or terminal, about 2-8 flowered, dense, about 2-6 cm long, bracts ovate lanceolate to obovate, upper ones narrow, margin entire, lower ones toothed, about 5-12 mm long. Flowers bisexual, zygomorphic, purple, pink and rarely white, about 2.2-2.7 cm long, pedicels 5-8 mm long, deflexed in fruit, Sepals 2, minute, orbicular, margin slightly lacerate, membranous, about 3-4 x 1 mm across, petals 4, outer series dissimilar, upper petal spurred and crested, about 25-30 mm long, winged on dorsal and ventral sides, spur slightly falcate, lower petal somewhat similar to the upper petals, nectar glands about 6-7 mm long, inner series clawed, cohering, abouit 11-14 mm long. Stamens 6, in 2 bundles, anthers dimorphous. Ovary unilocular, hypogynous, ovules many, style filiform, stigmas squarish with 6 marginal papillae. Fruits capsules, linear, about 20-30 x 3-4 mm across, dehiscing when mature by tumid or inflated valves, with persistent style. Seeds 10-20, smooth, broad caruncle, about 1.5 mm across, shining black.

Must be a Corydalis species (Papaveraceae/ Fumariaceae).
Corydalis in eFI.

Corydalis leptocarpa from Sikkim : 2 posts by 2 authors. Attachments (2)

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It could be Corydalis sp.

Please check Corydalis leptocarpa Hook.fil. & Thomson !

Agree! That is as close as you can get. The C. leptocarpa group may deserve more study in Burma and neighbouring districts, and here are some deviating forms. The plant in the photo is unusual in the mucronate outer petals.

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References:
Catalogue of Life  The Plant List Ver.1.1  IPNI  GBIF  BSI Flora of India  POWO  Flora of China  FOC illustration  Annotated checklist of Flowering plants of Nepal  Flora of Nepal  Flowers of India  Bhutan Biodiversity Portal (observation) India Biodiversity Portal   IBIS Flora