Flora of North America species comparison

erect, glabrous [sparsely glandular].

basal and cauline, opposite;

petiole absent;

blade fleshy, not leathery, margins entire.

axillary, flowers solitary;

bracts present.

present;

bracteoles absent.

bisexual;

sepals 5, proximally connate, calyx bilaterally symmetric, campanulate, lobes oblong;

corolla pale blue to lavender [yellow], bilaterally symmetric, bilabiate, tubular, tube base not spurred or gibbous, lobes 5, abaxial 3, adaxial 2;

stamens 2, adnate to corolla, filaments glabrous;

staminode 0[2];

ovary 1[2]-locular, placentation parietal;

stigma slightly 2-lobed, ± peltate.

capsules, dehiscence loculicidal.

50–200, dark reddish brown, oblong-ovoid, wings absent.