528 
46. SAXIFRAGES. 
PL ex. cal , 
Fam. XI. 46. SAXIFRAGES. Jussieu. 
Calyx adherent, or rarely free, limb 5-lobed ; petals 4 
or 5, on the rim of the calyx, alternating with the lobes, 
rarely 0; stamens inserted with the petals, as many or 
double the number, opposite and interposed ; styles 2, per- 
sisting; ovary 1, girt with a gland; capsule 2-beaked, 
2-valve, 1 or 2-celled, opening by a terminal pore ; valves 
in the 2-celled capsules bent inwards; seeds on the par- 
titions or base of the capsule; perisperm fleshy; corculum 
axile, straight ; radicle below. — Stem herbaceous ; leaves 
alternate, rarely opposite; inflorescence various. 
A. Petals 5, regular , clawed. 
Ovary free ; filaments roundish, spindle- 
shape . .*. Robertsonia. 312. 
Ovary free ; filaments dilated at bottom, 
connate; calyx bent back; petals naked . . Hydatica. 313. 
Ovary free ; filaments dilated at bottom, 
connate; calyx upright Miscopetalum. 314. 
Ovary free ; filaments dilated at bottom, 
connate ; petals 2-horned at the base . , Kingstonia. 315. 
B. Petals 5, regular , not clawed. 
Ovary adherent Saxifraga. 316. 
C. Petals none. 
Capsule 2-valved ; placentarium basillary. 
Chrysosplenium. 317. 
I. 312. ROBERTSONIA. Haworth. None-so-pretty. 
Calyx free, 5-parted, lobes membranaceous, becoming 
reflected ; corolla 5-petaled, regular ; petals clawed ; fila- 
ments round, slender at bottom, thickened at top, as long as 
the petals ; ovary free ; capsule 1 -celled, many-seeded, 
beaked; beaks recurved. — Root perennial; leaves roundish, 
wedgeshape or oblong ; edge cartilaginous, toothed or cre- 
nulate ; scape solid, leafless, effused, panicled ; flowers small, 
white, sprinkled with red or yellow spots. 
1. Robertsonia serrata . Sawleafed none-so-pretty. 
Leaves reverse ovate, wedgeshape, stiff, acutely serrate, 
bald, naked. 
