4 6 



THALAMIFLOR^ 



site, but the pairs are placed so close together as to give the appear- 

 ance of 4-leaved whorls. Channel Isles and the south-west coast 

 of England, but far from common. Fl. May to August. Annual. 



Arenaria Cherleri 

 (Cyphel) 



12. Arenaria {Sandwort) 



i. A . Cherleri (Cyphel). A mountain plant 

 with long roots and numerous densely tufted 

 stems, which scarcely rise above the ground, 

 bearing crowded narrow leaves and solitary 

 greenish flowers, which are generally without 

 petals. Highland mountains. Fl. June to 

 August. Perennial. 



2. A. verna (Vernal Sandwort). A small 

 tufted plant with awl-shaped leaves ; stems 

 2-4 inches high, bearing four or five com- 

 paratively large white flowers in loose cymes. Found in Scotland, 

 the north of England, and in Cornwall, but uncommon. Fl. early 

 summer. Perennial. 



3. A. uliginosa (Bog Sandwort). A very rare form, resembling 

 A. verna, but rather taller and with the leaves farther apart and 

 thicker. Found only in a single locality in Durham. Fl. summer. 

 Perennial. 



4. A. tenui folia (Fine-leaved Sandwort). A slender plant 3-4 

 inches high, with smooth, much-forked stems and finely awl-shaped 

 leaves. Petals half the length or less of the calyx. Found in sandy 

 fields in Eastern England. Fl. summer. Annual. 



5. A . peploides (Sea Purslane). Leaves sessile, egg- 

 shaped, acute, fleshy, smooth ; sepals obtuse. A 

 low, succulent, marine plant, with creeping roots 

 and forked stems. The flowers are small and white, 

 and grow from the forks of the stem. The plant ^^j 

 forms tangled masses on the seashore, and ap- ~A 

 proaches in habit the Sea Milkwort. Not un- 

 common. Fl. July. Perennial. 



6. A. serpyllijolia (Thyme-leaved Sandwort). 

 Leaves broadly egg-shaped, pointed, roughish, 

 sessile ; stem repeatedly forked, downy ; sepals 

 tapering, hairy. A small shrublike herb 2-6 inches 

 high, with inconspicuous white flowers, common on 

 dry banks and walls. Varies much according to 

 locality. Growing near the sea, the stems are less 

 branched, and the leaves somewhat larger and 

 more decidedly fringed. Fl. June to August. Annual. 



7. A. ciliata (Fringed Sandwort). A small species 2-3 inches 



Arenaria 



Peploides 



(Sea Purslane) 



