AN ENCYCLOPADIA 
OF HORTICULTURE. 163 
Hydrangea—continued. 
H. h. Otaksa (Otaksa).* 1. flesh-coloured, nearly all sterile, dis- 
posed in large, terminal, globose, leafless cymes. l. opposite, 
cuneate-obovate, deeply serrated. A. 2}ft. Japan, 1868. ardy. 
Howish-green, ultimately rose-colour, sterile ; cyme terminal, 
— packed. Japan, 1 
H. h. (variegated) is á variety with very ornamental 
— — when grown as young plants, in heat. 
— — 
Fie. 253. Hy EA PANICULATA GRANDIFLORA, showing 
Habit and detached Single Flower. 
(large-flowered panicled),* ft. white 
* er fy panicle, ik. long, consisting of 
` oben! Me mie, a J star-shaped Bowers intermixed through- 
out with sterile ones, more t 
autum 
lin. —— pand and 
f a 6 ite, or in threes, ovate-oblong, acute, pu- 
—— Japan, 1874. Hardy. See Fig. 255. 
neath; stalk pubescent, and nerves bearded in axils. Trunk 
like I its su _ Japan, 
ete book conser ratory. roting like Ty against its met with 
in gardens under the name of Schizophragma es, & 
C ninina to ed).* hite, sterile, or outer ones 
: ‘Oak-lea white, or 
large ; corymbs — — ‘Summer. l * 
ovate, sinuately lobed and toothed, beneath. A. 4ft. to 6ft. 
Sosa 1803. ` Half-hardy or —— 
scandens r ite ; a r 
and falling together, pan, 1878. Bante climbing, balf-hardy. 
Thun (Thunberg's).* A. blue or rose ; the sterile ones 
on the circumference, and fertile ones in the centre, of the cyme ; 
aA N wy SE ———— 
-Half-hardy.”’ (QG. C. 1870, 1699.) — 
HYDRANGEZ. A tribe of Sazifragee. : 
i , (probably from hydor, water, an 
drao, to act; in allusion to the active properties of the 
juice). Orp. Ranunculacee. A monotypic genus, the 
Species being a hardy herbaceous perennial. It is of 
Somewhat difficult culture, and must be grown in loam 
and leaf mould, in a moist situation. Increased by divi- 
sions of the root. 
_ H. canadense (Canadian). Orange Root. fi. greenish-white, 
Stall, solitary; p — May and June. l. rounded, —— 
Shaped at the a ae to seven-lobed, doub! serrate, v y; 
s Maisa full grown, in summer, din, to, . wide. Stem simple, 
America, 1769. (B. M, 3019, 3252.) 
H. h. stellata prolifera (proliferous star-like). #, at first | 
| damp, boggy positions to thrive thoroughly. 
HYDRIASTELE (from hydria, a water vessel or 
fountain, and stele, a column ; in allusion to the tall 
stems growing near springs). ORD. Palmec. A mono-. 
typic genus, the species being a tall stove palm. For 
culture, see tia. 
Wendlandiana (Wendland’s). fi, panicle of numerous 
slender pendulous spikes of about lít., the common peduncle very 
short, broad, and thick, marked with the scars of the spathes and 
of two outer bracts; spathe and male flowers unknown ; female 
perianth under the fruit, the Segments all very broad, the inner 
twice as pong as the onter ones. fr. ovoid or globular, when 
longitudinally striate with prominent ribs, succulent when fresh, 
with a thin endocarp. l. many feet long; segments numerous, 
unequal, the longest 1}ft. long, the upper ones confluent at the 
base, all or mostly jagged or toothed at the apex. Tropical 
Australia. SYN. Kentia Wendlandiana. 
HYDROCHARIDEZS. A small order of aquatic 
herbs, widely diffused over the globe. Flowers in 
spathes, often incomplete ; perianth of six segments, the 
three inner often petaloid. Leaves undivided, floating 
or submerged, opposite or whorled. There are about 
fourteen genera and forty- species. Examples: Hydro- 
charis, Ottelia, Stratiotes, Vallisneria. 
HYDROCHARIS (from hydor, water, and charis, 
grace; a pretty water plant). ORD. Hydrocharidee. A i 
monotypic native aquatic genus, spread over Europe and | 
North Asia. The species thrives in any still water. It _ 
may be readily increased by seeds; or by runners, 
which root at the joints. 
Morsus-ranz bit rather 3 oute: ts 
atngerianth pate areen, short and arraso hee ean 
or three flowers ; pedicel of female d at top into a short 
perianth tube. Summer.. /. stalked, o “go entire, cordate 
HYDROLEA (from hydor, water, and elaia, oil; > 
alluding to the habitat and nature of the plants). S¥Ns. _ 
Reichelia, Sagonea, Steris. Orp. Hydrophyllacee. A 
genus comprising about fourteen species of herbs or 
sub-shrubs, inhabiting North and South America, tropical 
Fig. 254. FLOWERING STEM OF HYDROLEA SPINOSA. 
Africa, the West Indies, the Malayan Archipelago, and 
tropical Australia. Flowers blue, axillary or terminal : 
corolla broadly campanulate-rotate, five-fid ; „lobes im- — 
bricated. Leaves alternate, entire. The species require 
