174 CRASSULACELffi 



somewhat of the habit of a Sagina, from which, however, it is 

 very distinct. — Fl. June, July. Annual. 



2. Cotyledon (Pennywort).— Mostly succulent herbs with 

 scattered, peltate leaves ; flowers in terminal spikes or racemes, 5- 

 merous ; petals united ; stamens in 2 whorls ; carpels each with a 

 hypogenous scale at its base ; styles slender, follicles many-seeded. 

 (Name from the Greek kdtule, a dish, from the shape of the leaves.) 



1. C. Umbilicus- Veneris (Wall Pennywort).— A remarkably 

 succulent, glabrous plant, with orbicular, crenate, peltate leaves, 

 depressed in the centre; and terminal racemes 6 — 18 in. high, of 

 short-stalked, pendulous, greenish-yellowjfoaw.y. — Walls and rocks, 

 chiefly in the west. The plant often takes a pink tinge in fading, 

 and the leaves are well-known to children by the name of " penny 

 pies." — Fl. June — August. Perennial. 



3. Sedum (Stonecrop). — Succulent herbs ; flowers usually 

 cymose, 5-merous, rarely 4-merous ; petals free ; stamens in 2 

 whorls ; hypogynous scales entire or notched. (Name from the 

 Latin sideo, I sit, from the prostrate habit of the genus.) 



* With a thick rhizome : leaves broad and flat 



1. S. rbseum (Rose-root). — Rhizome 2 — 3 in. long, branched, 

 woody, having the scent of rose-water ; stems 6 — 10 in. high, 

 annual, unbranched ; leaves broad, glaucous, acute ; flowers in 

 compact terminal cymes, greenish-yellow, 4-merous, dioecious. — 

 On mountains in the north and in Ireland, and on sea-cliffs ; not 

 common. — Fl. May — August. Perennial. 



2. S. Telephium (Orpine, or Livelong). — The largest British 

 species, growing about 2 feet high, and well distinguished by its 

 large, broad, ovate, serrate leaves and terminal dense corymbose 

 cymes of crimson 5-merous flowers. — Rocky thickets ; not un- 

 common, but often an escape from gardens. — Fl. July, August. 

 Perennial. 



** Leaves nearly cylindric : flowers white 



3. S. villbsum (Hairy Stonecrop). — A small species with hairy, 

 viscid stems and leaves; and pinkish white flowers, few 

 together. — Wet mountain pastures in the north. — Fl. June, July. 

 Biennial. 



4. S. album (White Stonecrop). — A glabrous species with 

 prostrate barren stems and erect reddish flowering stems 6 — 10 in. 

 high ; leaves sub-cylindric, blunt, \ in. long, bright green ; flowers 

 white, in many-flowered corymbose cymes. — Rock and walls ; 

 not common. — Fl. July, August. Perennial. 



