Small erect annual, 10–35 cm tall, sometimes much branched; stem very slender, sparsely appressed puberulous.
Flowers and fruits similar to C.shirensis, but smaller.
Pod 6–7.5(8) × 1.8–2 mm, thinly puberulous.
Calyx 1.5–2 mm long.
Keel 3–4 mm long.