STONECROP FAMILY 



173 



2. Cotyledon. — Leaves scattered ; sepals, petals, and carpels 

 5 each ; petals united ; statnens 10. 



3. Sedum. — Sepals, petals and carpels 4 — 6 each ; petals free ; 

 stamens 8 — 12. 



■^4. Sempervivum. — Leaves scattered ; sepals, petals, and carpels 

 6 — 20; stamens 12 — 40. 



6' f^^C^^^ 



COTYLEDON UMBILICUS-V^NERIS 



{]Vall Pennywort). 



s^DUM R6sErM {Rose-root). 



I. TiLLi:A.— Small herbs; /<?rtz/^^ opposite, entire; flowers 

 minute ; sepals, and sometimes the petals, united below ; sepals, 

 petals, stamens and carpels, 3 — 5 each ; follicles 2 or more seeded. 

 (Named after Michael Angelo Tilli, an Italian botanist.) 



I. T. muscosa (Mossy Till^a). — A minute, tufted, prostrate 

 smooth plant with small, opposite, oblong, blunt leaves and solitary, 

 subsessile, 3-merous, or rarely 4-merous, greenish white floivers, 

 tipped with red. — On sandy heaths in the south and east. It has 



