1	"Capsule more than 2 times length of calyx, cylindrical or fusiform"	2
1	"Capsule less than 2 times length of calyx, globose or ovoid"	5
2	"Calyx more than 4.5 mm in length"	3
2	"Calyx less than 4.5 mm in length"	4
3	"Leaves lanceolate (length: breadth 3–5), crenate with aristate margins; flowers in a loose raceme (i.e. floral bracts much smaller than leaves), leaves and calyx with filamentous trichomes"	"Bonnaya ciliata"
3	"Leaves ovate (length: breadth 1–3), crenate without aristate margins; flowers axillary, 1 per axil (i.e. no differentiation between leaves and floral bracts), leaves and calyx glabrous"	"Bonnaya antipoda"
4	"Plants decumbent, leaves cauline, lanceolate; calyx 3–3.5 mm, upper stamens with 2-celled anthers"	"Bonnaya tenuifolia"
4	"Plants erect, leaves basal, ovate; calyx 1.5–3 mm, upper stamens with 1-celled anthers"	"Lindernia clausa"
5	"Only upper stamens fertile"	6
5	"Upper and lower stamens fertile"	8
6	"Leaves with mid-vein only, stamens enclosed by flaps in corolla"	"Lindernia tectanthera"
6	"Leaves with 3–5 longitudinal veins, no internal flaps in corolla"	7
7	"Corolla less than 7 mm long, leaves lanceolate 7–13 x 2.5–4.5 (length: breadth 2–4)"	"Lindernia hyssopioides"
7	"Corolla more than 8 mm long, leaves ovate-orbicular 4.5–12 x 3–8 (length: breadth 1.2–1.6)"	"Lindernia rotundifolia"
8	"Leaves ovate to broad lanceolate, with 3–5 longitudinal veins"	9
8	"Leaves subulate with no visible midrib or narrow lanceolate with a single midrib"	11
9	"Leaves and calyx without filamentous eglandular trichomes (sometimes with stalked-glandular or sessile-glandular trichomes)"	"Lindernia alsinoides"
9	"Leaves and calyx with filamentous eglandular trichomes"	10
10	"Leaves with a length: breadth ratio of 1.6–1.9; 1 flower per axil, pedicels glabrous"	"Lindernia procumbens"
10	"Leaves with a length: breadth ratio of 1–1.3; 1–3 flowers per axil, pedicels with stalked glandular trichomes"	"Yamazakia pusilla"
11	"Erect herbs with terminal cluster of flowers, pedicels less than 10 mm long"	12
11	"Decumbent herbs with flowers in axils, pedicels more than 10 mm long"	13
12	"Corolla less than 6 mm long, with no staminal appendages"	"Lindernia aplectra"
12	"Corolla more than 8 mm long, with appendages on lower stamens"	"Lindernia stantonii"
13	"Corolla 7.5–8 mm long, lower staminal appendages capitate, leaves 1.5–3 mm wide (length: breadth 4–8), style 3 mm"	"Lindernia yarun"
13	"Corolla 8–14 mm long, lower staminal appendages subulate, leaves 0.5–1 mm wide (length: breadth 6–20), style 5–8 mm"	14
14	"Corolla with spotted lower lobes, ovary without stalked-glandular trichomes, pedicels 31–63 mm with stalked-glandular trichomes, calyx 2.5–4 mm long"	"Lindernia beasleyi"
14	"Corolla without spotted lower lobes, ovary with stalked-glandular trichomes, pedicels 20–43 mm without stalked-glandular trichomes, calyx 4–5 mm long"	"Lindernia subulata"