Table 2 in Inclusion of Ihlenfeldtia and Odontophorus in Cheiridopsis (Ruschioideae: Aizoaceae) and insights into generic and subgeneric circumscription in the Conophytum clade

Table 2. Summary of important generic anatomical, morphological and palynological characters in genera of the Conophytum clade
SchlechteranthusConophytumCheiridopsis s.s.IhlenfeldtiaOdontophorusEnargantheJensenobotryaNamaquanthusRuschianthusHabitWoody shrubCaespitoseCaespitoseCaespitoseCaespitose, sometimes mat-formingWoody shrubWoody shrubWoody shrubCaespitoseLeaf shapeTriquetrous to trigonousGlobose to ovoid, rarely squareTriquetrous to trigonousTriquetrous to trigonousTriquetrous to trigonousClavate to trigonousShortly clavate to almost globoseFinger-shapedSickle-shapedDegree of leaf length fused1/ to ¾ fused 6Usually completely fused, sometimes top ¼ free, rarely completely free1/ to 5/ fused 6 61/ to ¼ fused 51/ to ¼ fused 5Leaf pairs not fused1/ fused 51/ fused 61/ fused 6Old leaf forming sheath-++++−−−−Epidermal papillaeaBlunt papillaeBlunt papillae or trichomesBlunt papillae or trichomesBlunt papillae or trichomesBlunt papillae or trichomesFlat epidermal cells, no papillaeFlat epidermal cells, no papillaeFlat epidermal cells, no papillaeEpidermal cells very slightly elevatedStomatal protectionbForm I or IIForm I or II, and stomata sometimes elevatedForm I or IIForm IForm I or IIForm IForm IForm IForm IPetaloid staminodesFree at base, never forming a tubeFused, forming a tubeFree at base, never forming a tubeFree at base, never forming a tubeFree at base, never forming a tubeFree at base, never forming a tubeFree at base, never forming a tubeFree at base, never forming a tubeFree at base, never forming a tubeFilamentous staminodes++/−+−-−−++Pollen exine and colpus structureTricolpate with poorly defined colpiTricolpate with poorly defined colpiTricolpate with poorly defined colpiTricolpate with poorly defined colpiTricolpate with poorly defined colpiTricolpate with poorly defined colpi, distinctly micro-reticulateSyncolpateTricolpate with well-defined colpiUnknownNumber of locules7–123–88–1810–151085(8-)12(-17)5Covering membranes+−++++−+−Closing bodies+−+++−−−−
aAs defined by Opel, (2005): blunt papillae are low protuberances in the centre of the epidermal cell and trichomes are defined as outgrowths of epidermal cells that are longer than broad.
bForm I – stomata placed in depressions formed by underlying tanniferous idioblasts; Form II – stomtata sunken below epidermal surface, in depressions and further protected by overarching parastomal cells
(Ihlenfeldt & Hartmann, 1982).