1	"Stems with leaves; calyx 5-ribbed; flower with a long, narrow floral tube "	2
1	"Stems without leaves; calyx 10-ribbed; petals joined at the base only"	3
2	"Stamens free, not attached to the petals; sepals with glandular hairs "	Plumbago
2	"Stamens attached to the corolla tube; sepals without glandular hairs "	Ceratostigma
3	"Flowers in elongated, flat or branched clusters "	Limonium
3	"Flowers in rounded heads "	Armeria