B. khammouanensis

ID	19572
Leaf Attachment	Petiolate and basifixed
Leaf Arrangement	In rosette-like clusters at the top of rhizome;
Leaf Petiole	5–24 cm long, puberulous to glabrescent, dark red at base, paler red-green toward apex;
Stipules	persistent, herbaceous, ovate to triangular-cuneate, 14–25 × 6–12 mm, apex acute to acuminate, margin entire, outside puberulous, inside glabrous, pink to lightly green.
Petiole Angle of Attachment
Symmetry	Symmetric
Leaf Shape	Reniform
Leaf Size	4–6.5 × 6–8.6 cm.
Leaf or Lobe Apices	Rounded
Leaf Base	Shallowly cordate
Leaf Margin	Undulate
Leaf Texture	Succulent
Leaf Surface	Glabrous
Leaf Hairs
Leaf Colour	Glossy dark green
Leaf Venation	Palmate, veins 5–7, prominent beneath
Leaf Reverse	Glabrous, pale green, prominent veins