Table 1 in A recircumscription of Jacobsenia (Aizoaceae): Re-instating Drosanthemopsis, with two new quartz-endemics from Namaqualand, South Africa and sinking Knersia *

Table 1 Comparative list of taxonomically important characters in Jacobsenia, Knersia and Drosanthemopsis.
Jacobsenia cladeDrosanthemopsis cladeJacobseniaKnersia (= Drosanthemum diversifolium)Drosanthemopsis bella sp. nov. 1Drosanthemopsis vaginata (= Jacobsenia vaginata)Drosanthemopsis kwaganapensis sp. nov. 2Growth formHabitShrubby and erect or compactShrubby and erectCompact, mat-formingCompact, mat-formingCompactLong and short shootsPresent or no clear distinctionPresentNo clear distinctionNo clear distinctionNo clear distinctionLeavesLeaf pairsOften slightly anisophyllousIsophyllousIsophyllousIsophyllousIsophyllousColourBright greenDirty green, often suffused with redLight green, often suffused with redGrayDirty greenShapeTerete or slightly keeledTrigonous and slightly keeled towards apexTrigonous and slightly keeled towards apexTrigonous and distinctly keeled towards apexTrigonous and slightly keeled towards apexExtent of fusion towards basesShortly fusedNot fusedShortly fusedDistinctly fused into sheath for about lower 1/3Distinctly fused into sheath for about lower 1/3Bladder cellsDiameter surface0.08–0.1 Smooth or with a central spike0.2–0.3 mm With antler-like protrusions0.2–0.3 mm With antler-like protrusions0.075–0.1 mm With antler-like protrusions0.075–0.1 mm With antler-like protrusionsFlowerDiameter53–85 mm30–45 mm30–40 mm30–40 mm30–35 mmSepals5 or 6666 (–8)unknownCarpels5 or 6 (–8)666–137–8Filamentous StaminodesAbsentAbsentAbsentAbsentAbsentColourWhite or lemonWhite to deepWhite, pink or pinkWhiteWhiteyellowpinkwith white centreFruitBorderline expanding sheet/keelIndistinctDistinctDistinctDistinctDistinctClosing bodiesAbsentPresentInfrequently formedAbsentAbsentLocules5 or 6 (–8)666–137–8