Flora of North America species comparison

erect, ascending, or prostrate, not matted, usually rooting at proximal nodes, 1.5–27(–38) cm.

erect to decumbent, not matted, usually rooting at proximal nodes, 3–17 cm.

cauline, thin;

petiole absent;

blade spatulate, lanceolate, oblanceolate, elliptic, ovate, or obovate, (1–)5–37 × (0.5–)3–18 mm, palmately 3–5-veined or 1-nerved, not leathery, margins entire or remotely, sometimes coarsely, toothed;

distal well developed or much reduced.

cauline, thin;

petiole absent;

blade obovate, oblanceolate, or elliptic, distal sometimes linear, (2–)10–25 × (0.4–)3.5–9 mm, pinnately veined to 1-nerved, not leathery, margins shallowly serrate to subentire;

distal well developed or much reduced.

0.5–31 mm, 1/2–5 times subtending leaves.

3–15 mm, 1/2–3 times subtending leaves.

chasmogamous or cleistogamous; chasmogamous: sepals 0.7–6.1 mm, connate to 1/8 lengths;

corolla tube and adaxial lip lavender or blue to white, abaxial lobes white with purple to blue markings, tube 2.5–8 mm, adaxial lip 1/2 abaxial;

stamens 2;

staminodes each with appendage and distal segment.

sepals 5–6 mm, connate to 1/4 lengths;

corolla white, lavender, or pink, abaxial lobes sometimes with purple markings, tube 5.5–8 mm, adaxial lip equal to abaxial;

stamens 2;

staminodes without appendage and distal segment.

ellipsoid, often obliquely, sometimes ovoid or subglobular, 1.4–6.3(–7.5) × 1.2–3.3 mm.

narrowly lanceoloid, 8–14 × 1.2–3.8 mm.

usually 6-angled, usually ribbed.

irregularly oblong, ovoid, or rhombic, not ribbed.

= 18.

= 36 (India).