Vaccinium, L., 1753

Tamayo, Maverick N., Amoroso, Victor B., Coritico, Fulgent P., Penneys, Darin S., Callado, John Rey C., Horner, John D. & Fritsch, Peter W., 2024, Three new species of Vaccinium L. (Ericaceae) from Mindanao Island, Philippines, Phytotaxa 647 (1), pp. 19-33 : 22-23

Updated key to the small-leaved species of Vaccinium in the Philippines

1a. Leaf margin entire; leaf marginal glands one or two pairs confined near leaf base...........................................................................2

2a. Inflorescence terminal, or pseudoterminal; flowers in racemes.........................................................................................................3

3a. Hypanthium cupuliform; calyces triangular; pedicel 5–14 mm long.............................................................................. V. myrtoides

3b. Hypanthium broadly obconical; calyces broadly triangular; pedicel 5–7 mm long............................................................... V. fallax

2b. Inflorescence axillary; flowers solitary ..................................................................................................................... V. microphyllum 1b. Leaf margin crenulate; leaf marginal glands distributed along length of margin...............................................................................4

4a. Corolla long-conical (ampullaceous), without pronounced sulci and/or ridges............................................................... V. whitfordii

4b. Corolla urceolate, with pronounced sulci and/or ridges.....................................................................................................................5

5a. Bracteoles caducous before anthesis, ≤ 1 long; pedicels 6–7 mm long; anther tubules 0.6–0.8 mm long ............ V. hamiguitanense

5b. Bracteoles persistent until anthesis,> 1 mm long; pedicels 2–5 mm long; anther tubules 0.8–1.9 mm long....................................6

6a. Leaves with raised glands on each crenation; hypanthium glabrous ................................................................................. V. exiguum

6b. Leaves with sunken glands on each crenation; hypanthium white-hirsutulous ............................................................ V. coarctatum