Order II. 
DECANDRIA DIGYNIA. 
367 
6039 Flowers pentandrous monogynous 
6040 Flowers about decandrous digynous 
6041 Calyx of fruit spreading 
6042 Calyx of fruit closed 
6043 The only certain species 
6044 Cymes naked, Leaves oblong ovate acuminate toothed smooth 
6045 Cymes radiate, Leaves cordate toothed 
6046 Leaves ovate acuminate toothed beneath white with down, Serratures mucronate 
6047 Cymes, radiate. Leaves oblong sinuate-lobed toothed 
6048 Cymes radiate, Leaves elliptical narrowed at each end toothed smooth 
6049 Leaves alternate 
6050 Leaves opposite roundish hairy. Stems decumbent 
6051 Leaves orbiculate or oval stalked pimpled ciliate cordate at base, Petals round, Sepals mucronate 
^52 Leaves oval retuse obsoletely serrated stalked. Stem naked. Panicle bearded 
6053 Leaves cordate orbicular serrated stalked. Panicle headed 
6054 Leaves radical ligulate with cartilaginous teeth, Stem panicled leafy, Cal. hairy with glands 
6055 Radical leaves rosed straight glaucous supine crenate. Panicle simple 
6056 Leaves radical lingulate with cartilag. teeth. Stem simple racemose leafy, Cal. smooth 
6057 Radical leaves aggreg. lane. obov. with cartilaginous teeth, Stem leafy clammy. Calyxes glandular 
6058 Leaves rad. lingulate with a cartilaginous repand edge. Stem racemose leafy, Cal. with gland, haira 
6059 Leaves obi. lane, hairy toothletted. Stem naked. Peduncles alternate in corymbose heads 
6060 Leaves obi. lane, smooth repand toothed. Stem naked. Peduncles 1-flowered aggregate • 
6061 Smoothish, Leaves oblong-lanc. acute eroded. Stem naked. Panicle oblong 
6062 Leaves roundish toothed with long stalks. Stem naked 
6063 Leaves obovate retuse with cartilaginous crense. Stem naked panicled 
6064 Leaves cordate oval retuse with cartilaginous crenx, Stem naked panicled 
6065 Leaves reniform toothed, Stem naked panicled 
6066 Leaves cuneiform very obtuse repand. Stem naked panicled 
6067 Verv hairy, Lvs. elongate spatulate acutely toothed. Stems divaricate dichotomous, Panic, capillary lax 
6068 Leaves roundish toothed hairy. Runners creeping. Two petals long 
6069 Leaves rhomboid toothed variegated hairy. Runners very weak. Petals nearly equal 
6070 Leaves cuneate obovate somewhat toothed shorter than stalk, Stem panicled 
6071 Leaves roundish cuneate crenate in front. Stem naked simple. Flowers clustered racemose 
and Miscellaneous Particulars. 
been found in a wild state, but is extensively cultivated in the gardens of China and Japan, from whence it 
was introduced to Kew by Sir Joseph Banks. The flowers are almost always barren ; they are naturally of a 
rose color, but under certain circumstances of culture they become blue. The yellow loam of Hampstead 
Heath and some other places, and some sorts of peat earth are found to produce this effect ; but the cause is 
not yet ascertained. Dr. Daalen, of Antwerp, finds that turf-ashes, and, still more effectually, those of the 
Norway spruce, the wood generally used as fuel by him, applied to the roots of Hydrangea, produced the blue 
color of the petals. {Neil's Hort. Joiirn. 12:2.) According to P5usch, of Petersburgh, " the hydrangea will be 
turned blue by watering the young plant, the summer before, with alum water. Our grey colored earth, 
under the black moor-earth, has the same effect, being combined v/^ith aluminous salt." {Hort. Trans, vol. iv. 
568.) Sweet recommends a bed of peat, and says, the longer it remains there the bluer will be the 
flowers. 
The hydrangea, to flower freely, must not be allowed more than three or four strong shoots from the 
same root ; it must have abundance of pot room, and plenty of water when in flower. It is a good plan to 
shift the plants twice or oftener during the early part of the season. If plunged and turned out of the pot 
into an open border in the end of May, they will flower vigorously, and will even stand the winter around and 
south of London, and flower yearly, and if well protected m winter very freely and strongly. The flowers are 
produced from the extremities of the shoots of the current year. 
1040. Chrysosplenium. From z^'^^'o^i gold, and a-'^Xviv, the spleen ; a figurative name applied to this plant, 
with reference to its medicinal qualities. It is said to be a powerful cathartic. In the Vosges the plants are 
used copiously as a salad, under the name of Cresson de Roche. 
1041. Saxifraga. Saxunufrango, to break the stone ; a name contrived in reference to supposed medicinal 
quaUties which are now forgotten. 
An elegant genus of alpine plants, which have long been favorites in garden.s. Many of the species are 
