444 
Ipomea—continued. 
Perring’s). . violet-rose, 3in. long, 2in. 
24 She alee re ata A eccines ovate, lobed at base. 
Stems slender, climbing, clothed with stellate hairs. 
Cameroons, 1897. Stove. 
I. platensis. The correct name is J. digitata. be J 
. There are a number of varieties of this species, 
side EES wueriagat (crimson), Dicksoni (blue), flore-pleno 
(double-flowered), and tricolor (ved, white, and blue striped). 
Fahy 
Fic. 463, 
FLOWERS OF [rPoM@®A ROBERTSIL. 
I. Robertsii (G. F. Roberts').* ., sepals 4in. to 4in. long, 
corolla nearly white externally, with pale pink stripes, 3in. 
to 4in. long, the limb internally white, obscurely striated 
with pale pink, and with five lanceolate, rosy-pink rays; 
peduncles one-flowered. July. 7. 3in, to 4in. long, mem- 
branous, broadly ovate-cordate, acuminate, dull green, 
pubescent; petioles lin. to 2in. long, pubescent. Queens- 
land, 1883. Stove, twining perennial. (B. M. 6952.) See Fig. 463. 
I. setifera (bristle-bearing). #. white or purple, scented, 
showy, borne in profusion, two to four to a petiole; outer 
sepals _ bristle-bearing. 1. cordate-sagittate, emarginate- 
mucronulate, highly glabrous’ Guiana, &c., 1894. Greenhouse 
perennial. 
I. Thomsoniana (Thomson’s).* jl. white, 3in. in diameter; 
cymes axillary, few-flowered. J. trifoliolate; leaflets stalked, 
elliptic or elliptic-oblong, acute, fleshy. 1884. A handsome, 
stove climber, with the general habit of J. Horsfallie. 
Chip ae Leeda ps) lis hGs IC. me) aS! oex. Ds Gloss aS Ne 
I. Horsfallie alba. According to the ‘‘ Index Kewensis,” this 
is a variety of J. ternata. 
I. Woodii (Wood's). /. rose-purple, large, disposed in shortly- 
stalked clusters; corolla campanulate. J. cordate, tinted 
with purple. Zululand, 1894. A tuberous-rooted, greenhouse 
perennial, with woody stems. 
IPSEA (from ips, a Cynips insect; in allusion to some 
fancied resemblance), ORD. Orchider. A small genus 
(two species) of stove, terrestrial Orchids, natives of 
India and Africa; they have the long, narrow, plicate 
leaves and sheathed scape of Pachystoma (ander which 
genus Ipsea was included by Bentham and Hooker), but 
are distinctly pseudo-bulbous, with a few large, highly- 
coloured flowers. 
I. speciosa (showy). 
speciosum. 
This is the correct name of Pachystoma 
THE DICTIONARY OF GARDENING, 
IRESINE. Syn. Xerandra. Including Rosea. To 
the species described on p. 193, Vol. II., the following 
should be added : 
I. formosa (beautiful).* J. golden, veined with crimson and 
pencilled with green. 1883. A _ very effective sport from 
I. Lindenii; it keeps its character well out of doors, and 
makes an excellent bedding plant. : 
I. Herbstii Wallisii (Wallis’s).* 7. small, ovate-reniform, 
cleft at apex, recurved, blackish-purple. A remarkable, dwart 
variety. Another good form is brilliantissima. 
IRIARTEA. To the species described on p. 193, 
Vol. IT., the following should be added: 
I. andicola (Andes). A synonym of Ceroxylon andicola. 
I. gigantea (gigantic).* 7. having large, obliquely fan-shaped 
leaflets, preemorsely cut, light green; lowermost leaves grace- 
fully recurved. Stem supported a few inches above the soil by 
thick roots. Tlahitat not recorded. A noble Palm. (G. C., 
Aug. 17, 1872, p. 1105, f. 261.) 
I. ventricosa (swollen). /l., spathes ten to twelve, deciduous ; 
spadices 3ft. to 4ft. long. jr. globose, the size of a Cherry. /. 
Sft. to 12ft. long; pinne repand-sinuate. Stem attaining 80ft. 
in height; but sub-globose when young. Rio Negro, Brazil. 
(L. H., t. 400.) 
I, Bungerothii is in cultivation at Kew. 
IRIDORCHIS. A synonym of Cymbidium (which 
see). 
IRIS. Rainbow Flower. Including Newbeckia.  <Ac- 
cording to. J. G. Baker’s ‘‘ Handbook to the Iridew,”’ this 
genus embraces upwards of 160 species. One or two 
formerly included here are now referred to Marica, 
Morea, and Trimezia. 
In the outdoor garden there are few genera which are 
richer in species and varieties than the Iris, as there are 
few months of the year when one or other of its repre- 
sentatives is not in evidence. Hyen in winter the lovely 
I. wnguicularis (I. stylosa), I. reticulata histrioides, I. alata, 
I. Vartani, and I. persica may be enjoyed if they are 
planted in a sheltered sunny spot, or better still upon the 
rockery. Of early spring-flowering, bulbous kinds there 
are a still greater number, rich in colour and fragrant as 
to flower—I. reticulata, I. Rosenbachiana, and the lesser- 
known I. Bakeriana. There are many others, but those 
named are gems of the first water in their respective 
sections. They are, moreover, species which should receive 
far more encouragement from gardeners than is usually 
given them. 
In late spring there are several species quite as 
charming in their way as the three named, the best being 
I. sindjarensis, I. assyriaca, I. susiana, I, iberica, 
I. Helene, I. Gatesii, I. atrofusca, I. lwpina (with its 
curious beard), and I. Lortetii. A little later, in May, the 
delicately beautiful I. cristata, so well fitted for either 
rockery or border, is in flower. This last is one of the 
species that cannot be too freely planted where a sandy 
peat soil can be given it. May, however, is the 
month of Irises, as June is of Roses; then the lovely 
Rhizomatous section generally, from the common blue 
germanica to the finer descendants of pallida, neglecta, 
squalens, variegata, &c., are in full beauty. Nor is June 
without its special Iris, for then the flat, Clematis-like 
flowers of I. levigata (better known as I. Kempferi) com- 
mence to blossom, and continue right into late summer; 
while contemporary with them are many little known but 
lovely species in JI. Boissieri, I. tingitana, and I. jwncea, 
the familiar but charming I. sibirica, and the English and 
Spanish Irises in great variety. 
Coming, as the Irises do, from many quarters of the globe, 
their treatment varies considerably, not only with species 
and varieties from the same countries, but often with 
individuals. Some, like the common Flag Irises, will 
flourish with a minimum of attention in almost any soil, 
providing it is fairly rich, and eyen in town gardens. 
Many, as already pointed out, require a sheltered sunny 
rockery ; a few, like JI. Lortetii, I. susiana, I. tectorwm, 
I. lupina, &e., require a position where they can literally 
have a ‘‘roasting’’ in summer, and a light, well-drained 
soil. Those growers who are most successful with this 
singularly beautiful section advocate lifting the roots a 
month after flowering and placing them on a sunny shelf 
until planting-time again arrives in December. TI. tectorwm, 
as its name implies, grows upon roofs in its native country, 
but here a less elevated position will suffice if it be on a 
neeery with plenty of sun, and protected from cutting 
winds. 
