Frankenia L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 294-295

1. Frankenia L. 3

Annual or perennial. Flowers sessile, solitary or in leafy cymes or spikes. Petals and sepals usually 5; calyx tubular, persistent;

petals imbricate. Outer whorl of stamens shorter than the inner. Ovary sessile, of 3(-4) carpels; ripe capsule enclosed in calyx.

Literature: R. Nègre, Trav. Inst. Sci. Chérif. ser. bot., 12 (1957).

1 Annual; leaves obovate or oblong-spathulate, usually plane

1. pulverulenta 1 Perennial, woody at base; leaves with revolute margins, appearing linear or linear-lanceolate

2 Stemsprocumbent,mat-forming

3 Flowers scattered throughout the upper parts of the stems and branches, not confined to terminal corymbiform clusters 5. laevis 3 Flowers confined to dense corymbiform clusters which are terminal on the main stems or branches 6. hirsuta

2 Stems erect or ascending, often caespitose

4 Flowers in long, terminal, secund spikes; leaves completely covered with a white, calcareous crust 4. thymifolia

4 Flowers mostly clustered in dense terminal cymes; leaves mostly not completely covered by a white crust

5 Calyx 4-6 mm, with hairs c. 0-5 mm 2. boissieri

5 Calyx 2-3 mm, with hairs c. 04 mm 3. corymbosa