Guillenia axillare (Hook. f. & Thomson) Bennet in J. Econ. Tax. Bot. 4 (2): 593. 1983. Sisymbrium axillare Hook. f. & Thomson in J. Linn. Soc., Bot. 5: 102. 1861; Hook. f. & T. Anderson in Fl. Brit. India 1: 149. 1872. Microsisymbrium axillare (Hook. f. & Thomson) O. Schulz in Engler, Pflanzenr. 86: 160. 1924.

Diffuse annuals; branches spreading, 7.5 - 5 cm long, pubescent with simple and branched hairs. Basal leaves spathulate, ca 2.5 cm long, lobed or toothed, shortly petioled; cauline leaves ovate or oblong, 0.6 - 1.5 cm long, rounded at apex, sessile. Racemes elongate, lax, 6 - 10 flowered, leafy. Flowers bracteate, large, solitary in axils of upper leaves, white; pedicels slender, spreading or ascending. Sepals oblong, ca 2.5 mm long. Petals 3 - 5 mm long, white. Fruits very slender, terete, straight or slightly curved, subtorulose, ca 0.6 cm long, glabrous; style short.

Fl. & Fr. April - Aug.

Distrib. India: Roadsides in evergreen forests, 2500 - 5000 m. Sikkim.

Nepal and Bhutan.