Fig 1.
Tanglegram comparing nuclear and plastid phylogenies of Begonia sect. Baryandra.
Based on Bayesian analyses of chloroplast data (left) and nrDNA ITS data (right); trees are 50% majority rule consensus trees; asterisks mark clades with PP< 0.95; outgroups not shown; scale bars show number of substations per site in the alignment. The species described as new are highlighted by coloured circles.
Fig 2.
Begonia gironellae C.I Peng, Rubite & C.W.Lin.
A, habit; B, rhizome, showing stipules and fleshy hairs at petiole base; C, stipule; D, D', bracts at lowermost and uppermost parts of inflorescence; E, E', staminate flower, face and side views; F, F', F'', stamen, dorsal, side and ventral views; G, G', pistillate flower, face and side views; H, H', H'', style and stigmatic band, side, dorsal and ventral views; I, I', capsules; J, J', serial cross section of an ovary. All from Peng 24579.
Fig 3.
Begonia quinquealata C.I Peng, Rubite & C.W.Lin.
A, habit; B, stipule; C, C', portion of leaf, upper and lower surface; D, D', D'', bracts at lowermost to uppermost parts of inflorescence; E, E', staminate flower, face and back views; F, F', F'', stamen, ventral, side and dorsal views; G, immature pistillate flower; H, capsule, bottom view, showing 5-wings. All from Peng 24588.
Table 1.
Key to Begonia sect. Baryandra on Palawan.
Fig 4.
Begonia elnidoensis C.I Peng, Rubite & C.W.Lin.
A, habit; B, stipule; C, C', portion of leaf, upper and lower surface; D, D', bracts at lowermost and uppermost parts of inflorescence; E, E', staminate flower, face and side views; F, F', stamen, dorsal and ventral views; G, G', pistillate flower, face and side views; H, H', H'', style and stigmatic band, dorsal, side and ventral views; I, cross section of an immature capsule; J, capsule. All from Peng 23508.
Fig 5.
Begonia elnidoensis C.I Peng, Rubite & C.W.Lin.
A, habitat; B, habit; C, upper surface of leaf; D, stem and stipules; E, bracts on a developing inflorescence; F, staminate flower, face and side views; G, pistillate flower, face and side views; H, capsule; I, cross section of an immature capsule. All from Peng 23508.
Fig 6.
Begonia elnidoensis C.I Peng, Rubite & C.W.Lin.
A, sea-cliff habitat; B, habit showing elongated mature stems; C, base of the plant showing numerous basally branching stems.
Fig 7.
Begonia gironellae C.I Peng, Rubite & C.W.Lin.
A, habitat; B, rhizome showing petiole base; C, inflorescence, showing staminate and pistillate flowers; D, portion of leaf, showing velutinous margin; E, bracts on an immature inflorescence; F, staminate flowers; G, pistillate flowers; H, mature capsules; I, J, serial cross section of an ovary. All from Peng 24579.
Fig 8.
Begonia quinquealata C.I Peng, Rubite & C.W.Lin.
A, habitat; B, habit; C, stipules on rhizome; D, inflorescence with staminate flower; E, F, staminate flower, face and side views; G, H, capsule, viewed from side and bottom. All from Peng 24588.
Fig 9.
Begonia tabonensis C.I Peng, Rubite & C.W.Lin.
A, habit; B, stipule; C, C', bracts at lowermost and upper inflorescence; D, D', staminate flower, face and side views; E, E', stamen, dorsal and ventral views; F, F', pistillate flower, face and side views; G, G', G'', style and stigmatic band, dorsal, side and ventral views; H, capsule; I, cross section of an immature capsule. All from Peng 24538.
Fig 10.
Begonia tabonensis C.I Peng, Rubite & C.W.Lin.
A, Habitat; B, C, habit; D, stipules; E, inflorescence, showing bracts and staminate flowers; F, inflorescence; G, staminate flower, face and side views; H, pistillate flower, face and side views, I, capsule; J, cross section of an immature capsule. All from Peng 24538.
Fig 11.
Begonia tenuibracteata C.I Peng, Rubite & C.W.Lin.
A, habit; B, stipule; C, bracts; D, D', staminate flower, face and side views; E, E', E'', stamen, ventral, side and dorsal views; F, F', pistillate flower, face and side views; G, G', G'', style and stigmatic band, ventral, side and dorsal views; H, capsule; I, cross section of an immature capsule. All from Peng 23452.
Fig 12.
Begonia tenuibracteata C.I Peng, Rubite & C.W.Lin.
A, habitat; B, habit; C, rhizome, showing stipules, petioles and immature inflorescences; D, inflorescence, showing hyaline bracts and staminate flowers; E, F, staminate flower, face and side views; G, H, pistillate flower, face and side views; I, capsule; J, cross section of an immature capsule. All from Peng 23452.