“pe ; 
202 
THE DICTIONARY OF GARDENING, 
Isomeris—continued. 
best in a compost of sandy loam and leaf mould. Pro- 
pagated in autumn, by cuttings of ripe shoots. 
I. arborea (tree-like). fl. yellow, large, in terminal racemes ; 
petals four, — sessile. May. J. trifoliolate, lanceolate, mu- 
cronulate, glabrous. Stem thick, very knotty. h. 10ft. Cali- 
fornia, 1839. (B. M. 3842.) ; 
ISONANDRA (from isos, equal, and aner, andros, 
the stamen; number of fertile and barren stamens equal). 
ORD. Sapotacee. A genus comprising six species of 
glabrous or pubescent milk-bearing trees, natives of 
India and Ceylon. Flowers small, inconspicuous, pro- 
duced in little clusters, either in the angles of the leaves 
or at the ends of the young branches. Leaves entire, 
leathery. The species described below is a stove evergreen 
tree, of great commercial value and utility. It thrives in 
a compost of sandy peat and fibry loam. Increased by 
_ Cuttings, inserted in sandy soil, under a bell glass, in 
- heat. 
giar E dent alates arn i meri a err epeen 
orneo, 1847. The correct name of this tree, which yields the 
well-known Gutta-percha of ce, is Dichopsis gutta. 
ISOPLEXIS (from isos, equal, and pleko, to plait; 
the upper segment of corolla is equal in length to the 
lip). Syn. Callianassa. ORD. Scrophularineæ. A genus 
comprising two species of ‘very handsome greenhouse ever- 
green shrubs. Flowers. in terminal pedunculate racemes ; 
corolla tubular at the base, campanulate; upper segment 
of limb equal in length to the lip, and, like it, incum- 
bent in mstivation. The species thrive in a compost of 
sandy loam and leaf mould. Half-ripened shoots will root, 
during spring, in sand, under a bell glass. 
canariensis lden- i z ents of 
* corolla acute. dune. "2 perman inet onia amine 
h. 4ft. to 6ft. Canary Islands, 1698. SYN. Digitalis canariensis. 
(B. R. 48.) 
I. — sce) = owish-brown, dense ; segments of 
coro en ge D vate - lanceolate, denticulated. 
h. 3ft. to 4ft. Madeira, 1777. Syn. Digitalis sceptrum. 
(S. E. B. 73.) 
in dense spikes or cones, each flower sessile, within a 
bract or scale ; the cones hemispherical, globular, or ovoid, 
terminal, or rarely axillary. Leaves rigid, entire or 
divided, terete or flat, and sometimes broad. For culture, 
see Protea. The following is a selection of the species 
introduced : 
anemonifolius (Anemone - leaved). Pa perianth yellow, 
glabrous, except the terminal tufts of short hairs; cones sessile, 
_ solitary, or in clusters of two er three at the ends of the branches, 
nearly globular. July. 7. on rather long petioles, once or twice 
- trifid or pinnately divided, with linear or linear-acute, entire, bi- 
 ortrilobed segments. A. 4ft. to 6ft. 1791. (L. B. C. 1337; B. M 
697, under name of Protea anemonifolia.) 
I attenuatus (attenuated). fl., perianth pale yellow; laminz 
, illous pas ake tube EM i nearly so ; cones terminal 
or in the upper axils, sessile, depressed, globular. | — 
1. oblong-s to almost linear, with a small straight or 
hooked point, much narrowed into the petioles, thick, and almost 
veinless, h. 2ft. to 3ft. (B. M. 4372.) j 
I. Baxteri (Baxter's). /l., perianth pink, very villous ; cones de- 
ressed, globular, teem often l porri amongst numerous 
Foral leaves. broadly cuneate, undulate, and 
toothed only at the end, to twice or thrice three-lobed. A. 2ft. 
1831. (B. M. 3639.) 
cuneatus (cuneate) perianth pale purple, glabrous, or 
. small tufts at the ies of the k pae p cones terminal, de- 
June. l. from obovate-oblong to lanceolate 
int, rather thick, 
. 3421, under name 
ssp ade Tom gons 
) ceo: 0 y a 
obscurely veined. h. Tit. to 8ft. 1830. (B. 
E toudi) 
. 
Isopogon—continued. 
I. roseus (rose). fl., perianth Fors glabrous, tipped with small 
tufts of hairs; cones terminal, globular, solitary or clustered. 
April. Z. once or twice ternately divided or shortly pinnate; the 
segments linear or cuneate, entire or three-lobed, rigid, flat, con- 
cave or channelled, acute, but scarcely pungent. A. lft. to 4ft. 
1840. (B. M. 4037, under name of J. scaber.) 
I. spherocephalus (globe-headed). /l., perianth tube glabrous: 
the lamin densely hirsute, with yellow hairs; cones solitary and 
terminal, or two or three crowded at the ends of the branches, 
globular. March. J. linear or almost lanceolate, obtuse, with a 
short callous point, slightly contracted towards the base, but 
sessile; margins often recurved, and the midrib prominent be- 
neath. h. 4ft. (B. M. 4332.) 
ISOPYRUM (from isos, equal, and Pyros, Wheat; 
a Greek name applied to another plant). Including 
Enemion and Leptopyrum. ORD. Ranunculacee. This 
genus contains about seven species of dwarf, slender 
perennial herbs, natives of the temperate regions of the 
Northern hemisphere. Flowers white, solitary or loosely 
paniculate. Leaves ternate, decompound; leaflets stalked, 
three-lobed, or cut, membranous. The only species in 
cultivation is I. thalictroides, which is a very graceful 
little subject, with foliage resembling a Maidenhair 
Fern. It looks extremely pretty when grown on rock- 
work or a border, and thrives in almost any moderately 
good garden soil. Propagated by seeds; or by division of 
the roots, in autumn. a 
ten |b. He 
È 
ACY 
Fic. 338. ISOPYRUM THALICTROIDES, showing Habit and 
etached Leaflet. 
É ides (Thalictrum-like).* A. white, small; sepals 
blunt. Spring. Zl, leafstalks dilated at the base into mem- 
branous auricles. Root creeping, fascicled, or grumose. h. 9in. 
to 15in. Europe, 1759. See Fig. 338. 
ISOTOMA (from isos, equal, and toma, a section; 
segments of corolla equal). ORD. Campanulaceer. A 
genus comprising eight species of stove or greenhouse 
herbaceous perennials, formerly included under Lobelia. 
Flowers in axillary or terminal racemes. Leaves alter- 
nate, entire, largely dentate or pinnatifid. For culture, 
see Lobelia. Ñ - 
I. axillaris (axillary-flowered). A. blue; corolla flat, with bse 4 
f i and one-flowe 
peoe benag Har repre tid, toothed tee Australia, 1824. 
Š ile, pinna $ 
Greenhouse precast 9 (B. M. 2702, under name of Lobelia 
senecioides.) 
I. a. su (sub-pinnatifid) has the lacini of the leaves 
longer than in the type, and not- ntly a pinnatifid. 
SYN. L i matifida (under which name it is 
figured in B. M. 5073)... 
Brownii (Brown’: é racemose. Autumn. Z. linear, 
a —— Shots slate setae h. 1ft. West Australia, 1829, 
reenhouse annual, (B. M. 3075, under name of Lobelia hypo- 
crateriformis.) 
