Cyanastrum johnstonii Baker

Tubers up to 2.5 cm. across.. Cataphylls 2–3, the outer about 3 cm. long, the inner 6–9 cm. long.. Leaf-blade ovate, up to 15 cm. measured along the midrib, 12 cm. wide, cuneate, rounded or cordate, with lobes 3.5 cm. long; petiole up to 15 cm. long.. Flowering stem up to 30 cm. high, appearing before the leaves.. Stem-bracts 1–2, the lower sheathing, up to 5 cm. long, the upper usually free, linear, up to 4 cm. long.. Nodes of inflorescence 5–20; secondary peduncles 1-flowered, the lower ones rarely 2-flowered, with pedicels 4–10 mm. long; floral bracts absent; bracetoles absent, or represented by minute scars, or when present (very rarely) minute and filiform.. Perianth blue; lobes 12–18 × 3–6 mm.; tube 1.5 mm. long.. Anthers yellow, linear, 5–7 mm. long; pore terminal; filaments 3–4 mm. long.. Style 10–14 mm. long.. Capsule-lobes oval, up to 10 × 7 mm.; seed whitish, rounded and compressed to 7 × 5 mm., with a brown, reticulated, spongy cap, 7 × 6 mm.

It is a tropical plant. It is often on termite mounds. It needs well-drained soil. It is often in light shade and among rocks. It grows between 750-1,530 m above sea level.