Figures & data
Figure 1 Melodinus pollen, SEM. A–C. M. cochinchinensis: (A) ±Polar view of 3‐aperturate grain (Hu 11931); (B) Equatorial view of 3‐aperturate grain (Hu 7668); (C) Polar view of 4‐aperturate grain (Hu 7668). D–F. M. orientalis (Schmutz 3168a): (D) Polar view of 3‐aperturate monad; (E) ±Equatorial view of 3‐aperturate monad; (F) Polar/equatorial view of 3‐aperturate monad with apertures and mesocolpium centres folded inwards. G–I. M. orientalis (Winckel 1856b): (G) Upper view of tetrahedral tetrad; (H) Lower view of tetrahedral tetrad; (I) Oblique view of tetrahedral tetrad. J–L. M. phylliraeoides (Compton 1666): (J) Polar view of 3‐aperturate grain; (K) ±Equatorial view of 3‐aperturate grain; (L) Polar view of 4‐aperturate grain. M–O. M. reticulatus (Mackee 29524): (M) Polar view of 3‐aperturate grain; (N) Equatorial view of 3‐aperturate grain with mesocolpium centres folded inwards; (O) Detail of Fig. , showing scabrate mesocolpium centre. Scale bar – 5 µm (A–N), 1 µm (O).
Figure 2 A–H. Melodinus pollen, LM (A) Polar view of 3‐aperturate grain (M. phylliraeoides, Balansa 215); (B) Equatorial view of 3‐aperturate grain (M. cumingii, McGregor, 1267); (C) Polar view of 4‐aperturate grain (M. aeneus, Mackee 21599); (D) Equatorial view of 4‐aperturate grain (M. aeneus, Mackee 26345); (E) Polar view of 3‐aperturate grain (M. forbesii, Floyd 5396); (F) Equatorial view of 3‐aperturate grain (M. vitiensis, Gillespie 3190); (G) Upper view of tetrahedral tetrad (M. orientalis, De Vogel 5249); (H) Lower view of tetrahedral tetrad (M. orientalis, Winckel 1856b). I–P. Craspidospermum verticillatum pollen, I–L. SEM (Civeyrel 1234) and M–P. LM (Nilsson 26‐9‐1994). (I) ±Tetragonal tetrad; (J) Rhomboidal tetrad; (K) Detail of rhomboidal tetrad with irregularly situated pores; (L) Detail of rhomboidal tetrad with irregularly situated pores; (M–P) ±decussate tetrad in four subsequent foci, showing several porate apertures. Scale bar – 10 µm (A–P).
Figure 3 A–F. Melodinus pollen, TEM. A, B. M. cochinchinensis (Hu 11931): (A) Cross‐section of colpus and adjacent mesocolpia; (B) Cross‐section of pollen wall. C, D. M. cumingii, (BS 48894): (C) Length‐section through endoaperture; (D) Cross‐section of pollen wall. E, F. M. coriaceus (SF 1519): (E) Cross‐section near aperture; (F) Cross‐section of common wall of two units within tetrad. G, H. Craspidospermum verticillatum pollen, TEM (Civeyrel 1234); (G) Cross‐section through aperture; (H) Cross‐section of common wall of two units within tetrad. Scale bar – 1 µm (A–H).
