CRASSULA, Linn., sect. TILLAEOIDEAE, Schonl. 
47 
rosette. Inflorescence sub-umbellate. Flowers with more or less long, very 
slender pedicels, 4-merous or 5-merous. Carpels with more than 2 ovules. 
A. Flowers 4-merous. 
a. Stem slender, branched. 
26. Gr. Dodii, Schonl. et Bak. f. 
b. Stem very short, sparingly branched. 
a. Petals ovate, obtuse. 
27. Gr. umbellata, Thunb. 
b. Petals ovate-lanceolate, acuminate. 
28. Gr. Marlothii, Schonl. 
B. Flowers 5-merous. 
a. Calyx-lobes blunt, half as long as the obovate-oblong petals. 
30. Gr. diaphana, E. Mey/vv t ■ 
b. Calyx-lobes subacute, equalling the ovate, acute petals. 
29. Gr. silvatica, Licht. 
IX. Gorallina group. Small herbaceous perennials with many short, 
densely leafy branches rooting readily at the lower nodes. Flowers 5-merous, 
from the axils of the upper leaves, usually pedicelled. 
Leaves connate, oblong, obtuse. Calyx-lobes and petals obtuse. 
31. Gr. peploides, Harv. 
Leaves subglobose or ellipsoidal. Calyx-lobes short, obtuse. Petals ovate. 
32. Gr. corallina, Thunb. 
Not CLASSIFIED. 33. Gr. Dregei (Harv.), Schonl. 
34. Gr. debilis, Thunb. 
35. Gr. cordata, Thunb. 
1. Grassula natans, Thunb. Prodr. (1794), 54, FI. Cap. ed. Schultes, 281 , 
DC. Prodr. ill, 389. (Plate II, fig. 1.) 
Tillaea capensis, L. Syst. Yeg. xiv, 170; L. f. suppl. 129. 
Helophytum natans, E. et Z. Enum. no. 1843, 289 ; Harvey in 
Harvey and Sonder, FI. Cap. n, 328. 
H. filiforme, E. et Z. Enum. no. 1844, 289. 
H. Jluitans, E. et Z. Enum. no. 1845, 289. 
H. reflexum, E. et Z. Enum. no. 1846, 289. 
Bulliarda filiformis, E. et Z. Enum. no. 1850, 290. 
B. elatinoides, E. et Z. Enum. no. 1849, 290. 
Tillaeci inanis, Steud. Nom. ed. 2, II, 687 (ex Inch Kew.). 
T. elatinoides, Walp. Rep. II, 251. 
T. filiformis, Endl. ex Walp. Rep. II, 252. 
T. Jluitans, Endl. l.c. 
T. reflexa, Endl. l.c. 
