10 THE DICTIONARY OF GARDENING, 
Acrochene—continued. 
similar culture to Celogyne (which see), and should be 
grown in an intermediate temperature. 
A. Rimanni (Rimann’s). /. nearly equal to those of Dendrobium 
Kingianum ; sepals lilae-purple, the lateral ones connate; petals 
lilac-purple, short, oblong, denticulate; lip very dark purple, 
having each lateral lobe semicircular and denticulate, 1882. 
ACROCLINIUM. Bentham and Hooker include 
this genus under Helipterum (which see), the correct 
name of A. rosewm being H. roseum. 
A. roseum album flore-pleno (double-flowered). A pretty, 
double-flowered variety. 
ACRONYCHIA. Syns. Cyminosma, Gela, Huonia, 
Jambolifera. About fifteen species are referred to this 
genus; they are stove or greenhouse trees, natives of 
tropical Asia, Australia, and Oceania. Corymbs 
pedunculate, axillary and termimal. Leaves opposite or 
alternate, with one to (rarely) three leaflets; leaflets 
ample, entire, pellucid-dotted. The plant formerly known 
as A. Cunninghami now forms the monotypic genus 
Medicosma (which see). To the information given on 
p. 18, Vol. I., the following should be added: 
A. levis (smooth). . white, in di- or trichotomous cymes, 
usually shortly pedunculate, July. 7. irregularly opposite or 
alternate, consisting of a single leaflet, obovate-oblong to 
oblong-elliptical, obtuse, ltin. to 4in. long. Australia, 1824. 
Syn. Cyminosma oblongifolium (B. M. 3222). 
ACRONYCTA PSI. See Grey Dagger Moth, 
and also Pear Insects. 
ACROPHYLLUM. Syn. Calycomis (of Don): 
TRIBE Cunoniex of Orv. Savifrager. This genus is 
monotypic, the species being A. venosum (B. ii., t. 95), 
described in B. M. 4050 as A. verticillatum. 
ACROSSANTHES. A synonym of Vismia (which 
see). 
Fic. 9. ACROSTICHUM AUREUM. 
ACROSTICHUM. Including Hymenolepis, Jenkinsia, 
Leptochilus, Macroplethus, Microstaphyla, Photinopteris, 
Pecilipteris, and Teratophyllum. The species number 
upwards of 180. ‘The genus is* exceedingly rich in plants 
of decorative value. Some of the strongest-growing kinds 
are particularly adapted for covering trunks of Tree- 
Ferns, walls, columns, &c.,* which they ascend by 
means of the extension of their rhizomes. In such situa- 
tions they produce a very striking effect, hiding as 
they do unsightly supports or other equally objectionable 
objects. As before stated, in the work proper, the species 
with long fronds are most valuable for growing in hanging- 
baskets; while for most of the species, with entire 
or simple fronds, pot-culture must necessarily be resorted 
to. In whatever way they are grown, Acrostichums 
Acrostichum—continued. 
require a liberal supply of water at the roots ; consequently, 
the compost used must be of a very porous nature. A 
mixture of two parts fibrous peat, one part chopped 
sphagnum, and one part coarse silver sand, will be found 
to suit nearly all known species. 
One of the finest species in the large genus is A. (Clryso- 
dium) aureum (see Fig. 9), which requires the tem- 
perature of a warm house, and to be treated as an 
aquatic. It should be potted in equal parts fibrous 
peat and loam, and, provided there is abundance of 
heat in the house, it will form a very striking object 
if the lower part of the pot can be kept in water. 
Fic. 10. ACROSTICHUM CRINITUM. 
The Elephant’s-Ear Fern (A. (Hymenodium) crinitum), 
has a very appropriate popular name, as the fronds (Fig. 10) 
have more than a fanciful resemblance to the ears of 
the elephant. A mixture, composed of two parts peat and 
one part chopped and partly-decayed sphagnum, is what 
this species prefers; but in such a compost care must be 
taken that it does not get treated too liberally with 
water at the roots, as in that case it is not unusual to 
find the fleshy fronds covered with circular marks, having 
all the appearance and transparency of oily spots, which 
gradually extend over their surface, and completely 
destroy it. This peculiar condition we have not found 
in any other species except Platyceriums, all of which 
are subject to it to the same extent; it is invariably 
due to stagnation at the roots. The most efficacious 
treatment consists in entirely removing the soil from 
the roots, by washing them, and re-potting in a smaller 
pot. After this operation, very little water should be 
allowed, and even when in good health, unless growing 
in great heat, A. crinitum should be watered only when 
showing signs of flagging. 
Two or three other representatives of this interesting 
genus require special treatment if the best results are to 
be obtained. A. peltatwm is one. Unless kept in a 
place naturally moist, this elegant little Fern, which does 
not like having its roots disturbed more than is necessary, 
and which, furthermore, requires a liberal supply of 
water all the year round, is considered a somewhat shy 
