Isotoma Lindl.

Corolla tube entire, notched or slit half-way to the base anteriorly Isotoma

Corolla tube less than 1cm. Leaves entire or toothed less than 2 cm long

Leaves pubescent or sometimes glabrous, entire or dentate, ovate to linear, 4–10 mm long. Fruit dehiscent. Flowers with peduncles 5–30 mm long. Corolla pale blue, 4–12 mm long. Capsule obconic, up to 6 mm long and 3 mm diam. Procumbent to ascending herbs

Flowers unisexual, dioecious. Corolla glabrous inside. Coast and Cumberland Plain. Damp places; sometimes a weed in lawns. Fl. spring–summer Isotoma fluviatilisfluviatilis

Flowers bisexual. Corolla pubescent inside. Blue Mts Damp places. Fl. spring–summer Isotoma fluviatilisborealis