1	Stems creeping, procumbent, or diffuse, rarely suberect or erect, sometimes long stoloniferous.		(2)
+	Stems erect, occasionally decumbent.		(15)
2 (1)	Calyx shallowly lobed, lobes triangular-ovate		3 Lindernia crustacea
+	Calyx lobed to or almost to base, lobes sublinear.		(3)
3 (2)	Capsule much longer than persistent calyx.		(4)
+	Capsule almost as long as or shorter than persistent calyx.		(8)
4 (3)	Leaves narrow, linear-lanceolate, rarely lanceolate; main veins parallel		19 Lindernia micrantha
+	Leaves wide, mostly oblong; veins pinnate.		(5)
5 (4)	Leaf margin conspicuously mucronate toothed.		(6)
+	Leaf margin without conspicuous mucronate teeth.		(7)
6 (5)	Leaves petiolate; margin acute-serrate; corolla 10-14 mm		24 Lindernia ruellioides
+	Leaves sessile or short petiolate; margin aristate-serrate; corolla ca. 7 mm		25 Lindernia ciliata
7 (5)	Leaf base gradually narrowing; flowers paired, corolla violet; fruiting pedicel less than 0.6 cm		20 Lindernia brevipedunculata
+	Leaf base truncate to subcordate; flowers solitary, corolla white or pale purple; fruiting pedicel 0.6-2 cm		21 Lindernia anagallis
8 (3)	Leaf length much greater than width at least in lower part of stem, oblong-lanceolate to obovate-oblong.		(9)
+	Leaf length almost equalling width, subovate to orbicular.		(12)
9 (8)	Plants without long stolons; calyx ca. 3 mm in fruit.		(10)
+	Plants with long stolons, rooting from nodes; calyx ca. 5-8 mm in fruit.		(11)
10 (9)	Plants hairy throughout except corolla; leaves to 5 cm, apex obtuse to rounded; pedicel to 1 cm, recurved in fruit		10 Lindernia viscosa
+	Plants glabrous throughout except calyx; leaves 1-1.5 cm, apex acute; pedicel 1-2 cm, not recurved in fruit		29 Lindernia dubia
11 (9)	Stems and branches densely with horizontally spreading, silvery and shiny hairs 7.5-10 mm; leaf apex acute to obtuse		11 Lindernia mollis
+	Stems and branches sparsely pubescent with uniformly curved, neither silvery nor shiny hairs ca. 2.5 mm; leaf apex rounded		26 Lindernia cyrtotricha
12 (8)	Inflorescences terminal; capsule ovoid-globose		9 Lindernia pusilla
+	Inflorescences axillary; capsule fusiform-ovoid to ellipsoid-oblong.		(13)
13 (12)	Plants densely hairy; leaf blade suborbicular, apex rounded		17 Lindernia kiangsiensis
+	Plants setose or subglabrous; leaf blade ovate, deltoid-orbicular, or subtriangular-ovate, apex subacute to subobtuse.		(14)
14 (13)	Leaves 0.4-1.3 cm; flowers solitary		15 Lindernia setulosa
+	Leaves 1.6-2.5 cm; flowers 6-10		16 Lindernia scutellariiformis
15 (1)	Stem nodes 2-4; inflorescences pseudo-umbellate, at base with 2 pairs decussate or unequally pseudo- whorled bracts		2 Lindernia dictyophora
+	Stem nodes many; inflorescences racemose, spicate, or umbellate fascicles, without pseudo-whorled bracts.		(16)
16 (15)	Leaf veins parallel.		(17)
+	Leaf veins pinnate.		(21)
17 (16)	Leaf blade margin conspicuously crenate or serrate; calyx lobed to middle or 2/3 of calyx length		1 Lindernia nummulariifolia
+	Leaf blade margin entire or somewhat serrate; calyx lobed almost to base.		(18)
18 (17)	Capsule as long as or only slightly longer than persistent calyx.		(19)
+	Capsule at least ca. 2 X as long as persistent calyx.		(20)
19 (18)	Plants glandular hairy; fertile stamens 2; stigma discoid		6 Lindernia jiuhuanica
+	Plants glabrous; fertile stamens 4; stigma 2-lobed		7 Lindernia procumbens
20 (18)	Leaves ovate-lanceolate to narrowly ovate, 0.5-1.5 cm; capsule narrowly ovoid to ellipsoid, ca. 2 X as long as persistent calyx		27 Lindernia hyssopoides
+	Leaves linear to linear-lanceolate, 1-4 cm; capsule linear, more than 2 X as long as persistent calyx		19 Lindernia micrantha
21 (16)	Leaves to 12 cm; upper calyx lobe larger than other lobes		8 Lindernia megaphylla
+	Leaves less than 4.5 cm; calyx lobes subequal.		(22)
22 (21)	Calyx lobed to 1/3 of its length.		(23)
+	Calyx lobed to or near base.		(25)
23 (22)	Stems often much branched; branches spreading at an angle of 50-90°; internodes mostly equal in length		3 Lindernia crustacea
+	Stems often simple or sparsely branched; branches spreading at an angle of 10-50°; internodes short below, elongated above middle.		(24)
24 (23)	Leaf margin usually irregularly toothed; capsule shorter than persistent calyx		5 Lindernia oblonga
+	Leaf margin entire; capsule as long as persistent calyx		4 Lindernia taishanensis
25 (22)	Flowers numerous in racemes or sometimes panicles.		(26)
+	Flowers solitary or few umbellate or in short racemes.		(30)
26 (25)	Perennials; capsule shorter than persistent calyx		13 Lindernia macrobotrys
+	Annuals; capsule 2-3 X as long as persistent calyx.		(27)
27 (26)	Leaf base amplexicaul, margin densely aristate-serrate		25 Lindernia ciliata
+	Leaf base cuneate and decurrent, margin not densely aristate-serrate.		(28)
28 (27)	Capsule cylindric, 2 X or more as long as persistent calyx		23 Lindernia antipoda
+	Capsule globose to ellipsoid, almost as long as to shorter than persistent calyx.		(29)
29 (28)	Leaves sessile or short petiolate		10 Lindernia viscosa
+	Petiole to 1.4 cm		12 Lindernia elata
30 (25)	Branches spreading at an angle of 45°; plants often wider than tall or as wide as tall.		(31)
+	Branches not spreading at angle of 45°; plants longer than wide.		(32)
31 (30)	Plants 14-20 cm tall, woody with age; leaves thick, margin 12-18-toothed; calyx ca. 10 mm, lobes with long needlelike tip, longer than fruit		18 Lindernia stricta
+	Plants less than 10 cm tall, herbaceous; leaves thin, margin 8-12-toothed; calyx ca. 5 mm, lobes without long needlelike tip, as long as fruit		28 Lindernia delicatula
32 (30)	Capsule ovoid, as long as persistent calyx; leaves not linear		14 Lindernia yaoshanensis
+	Capsule cylindric, 2-3 X as long as persistent calyx; leaves linear.		(33)
33 (32)	Leaf base somewhat amplexicaul; bracts linear; corolla lower middle lobe larger than other lobes		22 Lindernia tenuifolia
+	Leaf base cuneate and decurrent; bracts subulate; corolla lobes subequal		23 Lindernia antipoda