HYDRASPIS CANADENSIS. 
Hydraspis canadensis is not interesting, but will there- 
fore prosper easily in a cool shady place, where its creeping yellow 
rhizome sends up a single kidney-shaped glossy leaf at a time, divided 
into some five or seven lobes ; and then upright stems of 6 or 10 inches, 
carrying each a single little greenish-white flower in April. 
Hydrocharis Morsus-ranae.—tThe Frog-bit is a pretty native 
water-plant, with floating clumps of kidney-shaped dark leaves, and 
three-petalled white flowers all through the summer, floating on the 
surface of the shallow pool. 
Hydrocotyle.—These will only grow in damp places, and no one 
who values his garden or his peace will admit them there. 
Hydrophyllum canadense and its relations, again, are capable 
of success in a damp place, but more valuable, in that their lobed 
palmate leaves suggest a tiny lotus’s with the pearl-drop rolling in 
their cup, although their spires of purplish bloom be insignificant, as 
is often the way with the outward charms of those who hold the jewel 
of the world in their hearts. 
Hylomécon japonicum, the correct name of Stylophorum 
japonicum, g.v. (See also Chelidonium. ) 
Hypericum.—The St. John’s-worts are a puzzle, not in their 
multiplicity only, but in the pronunciation of their race-name. Under 
neither of the two possible derivations can any sense be made out of it, 
and, therefore, as Hypericum has the weight of custom, there seems no 
strong reason for replacing it by Hypereicon, the correctness of which, 
though plausible, is only problematic. In their needs the plants are 
not thus obscure, but all are of the most perfect ease, in light and 
open soil, submitting to be multiplied by cuttings or by the abundant 
seed that they yearly set. The race is of enormous range and size, 
occupying mountain districts, in woods and alps and _ fields, across 
the Northern temperate zone of the New World as of the Old, and 
ranging in stature from a flat carpet to a towering shrub of 6 feet 
high and more. With these last, however, we cannot here cope, but 
in the ensuing list will deal only with those that are fitted by their 
growth and habit for admission to the rock-garden, where among their 
conspicuous merits they have that of flowering, like Campanula, in 
the later days of summer and far on into autumn. 
H. adénoclddon stands only some 4 or 5 inches high, with panicles 
of golden bloom, and huddled finest foliage on the shoots, the leaves 
being very dense with glands, and narrower than those of H. repens, 
to which otherwise the plant has affinities. (North Syria.) 
H. adénétrichum belongs to the shady mountain woods of Anatolia, 
and reaches some 6 inches or so, with slender almost unbranching 
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