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a 
1900 SUPPLEMENT—RECENT INTRODUCTIONS, 
i 
INTEGUMENT. A covering layer or membrane. 
INTER. In compound words this signifies ‘‘ between” ; 
e.g., Intercostal, between the ribs of a leaf. It shonld 
not be confounded with Intra, which means “within.” 
INTERMEDIATE HOUSE. In large gardens the 
value of the Intermediate House is great. It is, as it were, 
‘a connecting link between the stove and the greenhouse, or 
between the warmest Orchid-houses and the cool ones. 
Not only are there a multitude of plants that require the 
temperature of the Intermediate House all the year 
through, but there are also many other plants from the 
cooler structures that need a little extra heat at certain 
periods to make good growth, and there are also plants 
in the hottest honses that need a lower temperature, or 
period of rest, which can be best given in the Intermediate 
House, for which reasons such a house is practically a 
necessity where there are many plant-houses. 
INTRA. In compound words this signifies “‘ within” ; 
£9. Intramarginal, within bat near the margin. See 
Inter. 
INULA. Of late years many species of these showy 
border plants have been introduced to gardens. They are 
much superior to the older I. Heleniwm, which is coarse and 
only suited to the wild garden. They are dwarf of habit, 
and some of them have bold foliage—I. grandiflora, for 
instance. They may be planted in either spring or 
autumn, at which svasons, too, they may be divided for 
purposes of increase. 
To the species described on p. 190, Vol. II., the following 
should be added: 
I. ensifolia (ensate-leaved).* l.-heads one or several to a stem; 
scales lanceolate, erect, leaf-like, cobwebby-tomentose beneath. 
August. J. sessile, linear, strongly acuminate, many-nerved, 
per rons. Stems erect. f. Sin. Caucasus, &c., 1793. (J. F. A. 
) 
I. jae (large-flowered). i., involucral scales linear- 
subulate, fulvous-hirsute. July. 7. sessile, oblong, slightly 
villous, serrated, the serratures glandular at apex. Stems 
simple, one-headed. h. 2ft. Caucasus, Persia, &c., 1810. (B. M. 
1907, under name of J. glandulosa var.) 
I. hirta (hairy). f.-heads solitary or almost ternately corymbose ; 
involucral scales hairy-ciliated, linear-lanceolate, the outer ones 
exceeding the inner ones. July. J. sessile, lanceolate-oblong, 
rigid, sore entire, the margins and nerves hairy. Stems erect, 
somewhat branched, pilose-hairy. A. lft. South Europe, 1759. 
(J. F. A. 358.) 
I. salicina (Willow-like).* 1.-heads, involucre campanulate, the 
seales ovate-lanceolate, serrulate-scabrous, slightly reflexed at 
apex. July. 7. half-amplexicaul, lanceolate, lise seabeas on 
the margins, somewhat recurved at apex. Stems erect, corym- 
bosely branched ; branches one-headed. /. 14ft. South Europe, 
&c., 1648. (F. D. 786.) 
I. saxatilis (rock-loving). A synonym of J. viscosa. 
I. squarrosa (squarrose). fl.-heads solitary or corymbose at the 
tips of the branches; involucre campanulate, the scales ovate, 
spreading-reflexed at apex. July. /. oblong, acuminate, serrated, 
more or less scabrid, reticulate-veined. Stems erect, slightly 
branched. A. lft. France, &c., 1768. 
I. viscosa (clammy). /l.-heads having linear involucral scales. 
July. 2. lanceolate, serrated, glandular-pilose, sessile, cordate- 
auricled ; auricles reflexed. Stems erect, pilose-viscous, panicu- 
lately branched at apex; lateral branches leafy, few-headed. 
h, 15ft. South Europe, 1596. Syn. J. saxatilis. 
I. montana is also suitable for naturalising in the wild garden. 
INVOLUCRARIA. Included under Trichomanes 
(which see). 
IOCHROMA. Iyciwm fuchsioides is synonymous 
with I. fuchsioides. ‘To the species described on p. 190, 
Vol. II., the following should be added: 
I. flava (yellow). fl. in rite & clusters; corolla pale yellow, 
tubular, 1sin. long, with five short lobes. J. alternate, ovate- 
lanceolate, petiolate, glabrous above, finely puberulous below. 
h. O6ft. Cordilleras of Colombia, 1898. A bushy shrub, 
(R. H. 1898, p. 360.) 
IONIDIUM includes Pombalia. I. capense is known 
as the Cape Violet. 
IONOPSIDIUM. 
ander Cochlearia. 
IPHIGENIA (named after Iphigenia, daughter of 
Agamemnon). Orp, Liliacee. A small genus (four species) 
of stove or greenhouse, bulbous plants, closely allied to 
Ornithoglossum (which see for culture), natives of 
India, Africa, and Australia. Flowers small, erect, 
This genus is now included 
- I. Cavanillesii (Cavanilles’). 
&c. 448 
Iphigenia—continued. 
solitary or corymbose; perianth six-partite, stellate, 
deciduous; stamens six, hypogynons. Leaves few. 
scattered, linear, the upper ones bract-like. Only one 
species calls for description here. 
I. indica (Indian). fi. reddish or purplish, few or many; 
pecans din. to sin. long; pedicels lin. to 2in. long. June. 
. few, the lower ones 6in. to 8in. long. Stem 3in. to 10in. 
long, flexuous. India, 1818. Syn. Anguillaria indica. 
IPOMGA. (Inelnding Leptocallis, Mina, and 
Skinneria. To the species described on pp. 191-2, Vol. 
il., the following should be added. A few plants 
formerly included hereunder are now referred to 
Argyreia and Lettsomia. See also Batatas (which 
is included in this genus by Bentham and Hooker). 
Se (taper-pointed). The correct name of J. muta- 
is. 
I. angustifolia (narrow-leaved). The correct name of 
I. jilicaulis. 
I. Batatas. The plant known in gardens as Convoleulus 
chrysorhizus is a form of this species. 1888. 
I. Bona-nox. There is a form grandijlora, having very large, 
sweetly-scented flowers. 
I. bonariensis (Buenos Ayres).* _. purplish-lilac ; peduncles 
axillary, solitary, bearing a corymb of three (to seven?) 
flowers. Summer. 7. cordate, palmately three- to five-lobed. 
Stems long-twining, branched, purplish. Roots tuberous. 
Buenos Ayres, about 1826. A magnificent, stove species. 
(B. M. 3665.) 
I. Bronsoni (Bronson’s). This is described (iu G. & F. 1892, 
y., p. 345) as “a rapid grower, with white stems, gouty at 
base ; flowers not seen.” Cuba, 1892. Stove. 
I. camerunensis (Cameroons). A form of J. paniculata. 
The correct name of Batatas 
Cavanillesii. 
I. coccinea (scarlet).* fl. red, sweet-scented; corolla jin. to 
1gin. long, the limb obscurely lobed, 4in. to 4jn. wide. June 
and July. 7. on slender petioles, cordate, or with a sagittate 
or hastate base, acuminate, entire, angled, or toothed. Stems 
climbing. A. 9ft. to 15{t. Carolina, 1713. Half-hardy annual. 
(A. B. R. 499; B. M. 221.) There is a form luteola with orange 
flowers. 
I. decora (comely). . white, with a rosy-purple centre, large. 
1. oval, velvety. Stems annual, 3ft. high. Rootstock woody. 
East Africa, 1879. Stove. 
I. digitata (digitate). The correct name of J. platensis. 
I. filicaulis. The correct name is J. angustifolia. 
I. gossypioides (Gossypium-like). #. rose-coloured, with a 
reddish-purple throat, showy. 7. borne on long petioles. 
Southern Argentina, 1897. Greenhouse annual; not climbing. 
I. grandiflora (large-flowered). A form of J. Bona-nox. 
I. hederacea. Of this species there are many garden forms, 
including atroviolacea (dark violet and white), grandiflora 
(large, pale blue), Huberi variegata (variegated), and superba 
(pale blue, with a white margin). 
I. hederifolia (Ivy-leaved).* /. of a very bright reddish- 
searlet, numerous, the tube elongated, the limb abruptly 
spreading. Summer and autumn. J. with three to five more 
or less deep lobes, the middle one oyate-lanceolate, acuminate, 
the lateral ones much narrower, sinuate-angled. Mexico, 
Antilles, &e. Stove. 
I. Horsfalliz alba (white). A synonym of J. Thomsoniana. 
I. imperialis (imperial). Under this name the following half- 
hardy garden forms are desqribed: J. % aurata (golden), 
flowers blue or rosy-lilac, leaves golden; a vigorous climber. 
I. i. collata (collated), flowers variable in colour, and having 
wavy, crimped margins. 1897. 
I. Kerberii (Kerber’s).* ji. of a vivid scarlet, clustered, com- 
pletely covering the plant (when cultivated in the open air in 
Southern Italy). 7. cordate. South America, 1894. Green- 
house. 
I. leptophylla (slender-leaved). #. pinkish-purple; corolla 
funnel-shaped, about 3in. long; peduncles short, one- or two- 
flowered. 7. simple, entire, linear, 2in. to 4in. long, din. 
broad, shortly petiolate, acute. Stems erect or ascending, 2ft. 
to 4ft. high. Roots very large, weighing from 10Ib. to 100lb. 
Texas and New Mexico. Greenhouse perennial. 
I, linifolia (linum-leaved). . yellow, small; peduncles lin. 
to din. long, few- or many-flowered May. Jl. petiolate 
narrow-oblong, the lower ones often Sub-cordate and ovate- 
oblong, lsin. to 2sin. long. Stems slender, twining or 
creeping. India, 1827. Stove annual. SyN. Skinneria 
caespitosa. 
I, mutabilis. The correct name is I. acuminata. 
I. paniculata (panicled) he correct name of Batatas 
paniculata. 
I. p. camerunensis (Cameroons). A variety with entire 
leaves. Cameroons, 1891. (R. G. 1891, t. 1352.) 
