Table X.
Tabulation of differentiating pollen features in Lorantheae, part 3: Tapinanthinae (part of Clade J; Figure 8).
| Genus | Polarity, aperture | Size, shape, outline in e.v. and p.v.a | Equatorial apices | Margo | Further exine features (LM, SEM) | Sculpturing |
|---|---|---|---|---|---|---|
| Actinanthella | Isopolar, zono(3)colpate | Medium, distinctly oblate, emarginate, concave-triangular to trilobate | Obcordate | Distinct | LM: nexine thickened in polar area | CM: ? MC: nano-verrucate to granulate M: mostly psilate |
| Agelanthus bruneus, A. scassellatii | Isopolar, zono(3)colpate | Medium, (distinctly) oblate, elliptic, straight-to concave-triangular | Obcordate or T-shaped | Distinct, covering the entire apices | SEM: protruding polar dome | CM: ? MC: nano- to micro-baculate/-echinate, granulate M: mostly psilate |
| A. discolor (formerly Tapinanthus) | Isopolar, zono(3)colpate | Medium, oblate, elliptic, concave-triangular to trilobate, | Obcordate | Distinct | LM: nexine thickened in polar area | CM: granulate MC: nano-verrucate to granulate M: psilate to nano-verrucate |
| Bakerella | Isopolar, syn(3)colpate | Medium, oblate, elliptic, concave-triangular to trilobate | Obcordate | Distinct | LM: nexine can show triangular intercolpial thickenings | CM: ? MC: nano- to micro-verrucate M: mostly psilate |
| Englerina | Isopolar, zono(3)colpate | Small to medium, (distinctly) oblate, elliptic, straight- or concave-triangular/trilobate | Obcordate | Indistinct or distinct | SEM: ± protruding (small) polar dome | CM: ? MC: nano- to micro-verrucate/-echinate, granulate M: As MC or psilate |
| Oncocalyx | Isopolar, zono(3)colpate | Medium, oblate, variable, straight- to concave-triangular | Obcordate | Distinct | LM: nexine can be thickened in polar area | CM: granulate (O. welwitschii) MC: nano-verrucate(-echinate) to granulate M: mostly psilate |
| Plicosepalus acaciae, P. curviflorus | Isopolar, syn(3)colpate | Small, oblate, elliptic, straight- or concave-triangular to trilobate | Obcordate | Distinct | LM: triradial polar nexine thickening (P. curviflorus) | CM, MC: (nano-verrucate), granulate M: segmented (P. acaciae); psilate to weakly micro-verrucate (P. curviflorus) |
| P. sagittifolius | Heteropolar, p.f.: syn(3)colpate, d.f.: zono(3)colpate | Medium, oblate, bean-shaped, concave-triangular | Obcordate | Distinct | LM: triradial polar nexine thickening | CM: nano-verrucate to granulate MC: nano- to micro-verrucate, verrucae increasing in size and decreasing in density from p.f. to pole of d.f. M: psilate |
| Socratina | Isopolar, syn(3)colpate | Medium, oblate, elliptic, concave-triangular to trilobate | Obcordate | Distinct | LM: nexine with triangular intercolpial thickenings | CM: ? MC: nano- to micro-verrucate M: mostly psilate |
| Tapinanthus bangwensis, T. ogowensis | Isopolar, demisyn(3)colpate | Medium, oblate, elliptic to subrhombic, trilobate | T-shaped | Very broad | LM: sexine thickened in MC (T. ogowensis), nexine hexagonally thickened in polar area | CM: nano-verrucate to granulate MC: nano- to micro-baculate/-echinate, granulate M: mostly psilate |
Note: Abbreviations: e.v., equatorial view; p.v., polar view; p.f., proximal face; d.f., distal face; LM, light microscopy; SEM, scanning electron microscopy; CM, colpus membrane; MC, mesocolpium; M, margo; a Size: small, <25 µm; medium, 25–50 µm; shape: oblate, less than two-times wider than high; distinctly oblate, more than two-times wider than high.