Begonia section Baryandra, A. de Candolle, 1859

Tandang, Danilo N., Rubite, Rosario R., Angeles Jr, Raul T. & De Guzman, Margaret C., 2016, Begonia titoevangelistae (sect. Baryandra, Begoniaceae) a new species from Catanduanes Island, the Philippines, Phytotaxa 282 (4), pp. 273-281 : 274-275

Key to the Begonia section Baryandra species of Bicol Region

1. Stem clinging to the trunk of trees, grows on altitude 1,800–2,100 m. Flowers orange................................................ B. oxysperma

- Stem rhizomatous on soil or rocks, grows on altitude 0–100 m. Flowers white or pink..................................................................2.

2. Leaf blade uniformly green. Bracts orbicular and persistent. Fruit with 3 equal wings .............................................. B. mindorensis

- Leaf blade variegated. Bracts boat-shape and caducous. Fruit with 3 equal or unequal wings........................................................3.

3. Adaxial and abaxial lamina green turning brown. Female flowers with five tepals. Fruit with one longer wing ...... B. neopurpurea

- Adaxial lamina veins very dark green to almost black, interveins and margin green, abaxial lamina veins red, interveins and margin cream. Female flowers with four tepals. Fruit with equal wings ........................................................................... B. titoevangelistae