Mezoneuron kauaiense, Scrambling

Clark, Ruth P., 2016, A Taxonomic Revision of Mezoneuron (Leguminosae: Caesalpinioideae: Caesalpinieae), Phytotaxa 274 (1), pp. 448-450 : 448-450

Small tree; unarmed; petals red; endemic to Hawaii ................................................................................... 14. M. kauaiense Scrambling shrub or liana; with recurved prickles on some parts; petals usually yellow, occasionally pink-red or white; South East Asia, Australia, New Caledonia, Africa or Madagascar..................................................................................... 2 Petals white; endemic to Madagascar........................................................................................................3. M. hildebrandtii Petals usually yellow, occasionally pink-red; South East Asia, Australia, New Caledonia or Africa.................................. 3 Recurved prickles on stems 8–15 mm long; occurs in sub-Saharan Africa.......................................................................... 4 Recurved prickles on stems up to 5 mm long; occurs in South East Asia, Australia or New Caledonia............................. 5 Leaflets opposite or subopposite, 0.7–2.6 [–3.5] × 0.4–1.5 cm; inflorescence axis sparsely to moderately orange tomentose; pedicel not articulated; ovary glabrous, or with few hairs, or densely hairy ......................................... 1. M. angolense Leafets alternate, 1.5–6 × 0.9–3.3 cm; inflorescence axis densely greyish or fawn to orange tomentose; pedicel articulated ca. 2 mm below hypanthium; ovary always densely hairy.....................................................................2. M. benthamianum

A TAXONOMIC REVISION OF MEZONEURON

Phytotaxa 274 (1) © 2016 Magnolia Press • 5

5. Inflorescence usually without prickles on the axes (occasionally few on the lower portion of the peduncle); endemic to New Caledonia...................................................................................................................................................................... 6

- Inflorescence usually with prickles on the axes; occurs in South East Asia or Australia, not present in New Caledonia...... ............................................................................................................................................................................................. 10