Septentrionalis Characteristics annuals flowers in diffuse umbels, with pedicels over 5 mm long bracts below inflorescence lanceolate to awl-shaped flowers small corolla about the same length as the calyx

 

Androsace Characteristics leaves in a basal rosette  flowers in umbels flowers white sepals and petals not reflexed corolla tube mostly shorter than calyx, its throat constricted stamens separate style minute

 

Primulaceae Characteristics (except for Glaux which have no corolla) plants not twining plants without milky juice flowers not in heads or spikes petals and sepals both present (except for Glaux) corolla regular petals partially united to form a tube same number of stamens as corolla lobes stamens directly in front of (not alternating with) corolla lobes ovary superior