AN ENCYCLOPAEDIA 
OF HORTICULTURE. 
ISCHARUM (from ischein, to check; in reference to 
the impoverished nature of the upper portion of -the 
spadix) ORD. Aroidee (Aracee). A small genus of 
greenhouse tuberous herbs, now united, by Bentham and 
Hooker, to Biarum, from which they differ only in 
botanical details. For culture, see Typhonium. 
angustatum (narrow). fl., sheaths nearl white, embraci 
the base and middle of the spathe ; spathe ‘bin, long, sheathing 
—— nearly white, gradually expanding into an erect, almost 
lack-purple blade ; spadix —— the female portion very 
short, the neutral part jin. long and vhe, the male part lin. 
long 'and black- -purple. December, long, thick, petiolate, 
oblong- a ae sub-acute, Tuber the size of a I potato. 
Syria, 1860. (B. M. 6355.) 
I. Pyrami (Pyramus). fl., spathe dark velvety-purple, short, 
broad - lanceolate, long - acuminate, twist sted; tube ventricose ; 
Semin ot ai aienea tt, Sa by ahaa eae 
nerved. Syria, 1861. (B M. oben), tes 4 
ISERTIA {named after E. Teort, a German sur- 
geon). Sywns. Brignolia, Bruinsmania, ORD. Rubiacee. 
A genus comprising fifteen species of shrubs or trees, 
natives of Brazil, Guiana, and New Grenada, Flowers 
scarlet or red, rarely white or yellow, rather large, in many- 
flowered, thyrsoid, terminal, corymbose cymes, shortly 
pedicellate, Leaves large, opposite, rarely ternate, verti- 
cillate, thick, coriaceous, acuminate. I. coccinea, perhaps 
the only species in cultivation, is a very handsome stove 
evergreen shrub, requiring a compost of peat and loam, 
with the addition of a little charcoal and silver sand. 
Increased by cuttings, inserted in sandy soil, in heat, 
during spring and summer. 
——— Ji. scarlet, velvety Re Sag be vapor m lin. long ; 
thyrse terminal, many-flowered, panicled. J l, oval, acu- 
minated at both warg downy beneath. A. 8ft. T. adie: Guiana, 
ISMELIA. Now included under Chrysanthemum. 
ISMENE. Included under Hymenocallis (which 
see). 
— icon Maan), aaa hilo lip; in 
allusion to the shape of the labellum). ORD. Orchidec. 
A genus of four or five species of epiphytal stove orchids, 
from Mexico and the West Indies to Brazil. 
Flowers rose or red, in one row, in spike-like racemes, 
small or medium; labellum free from the column, con- 
tracted at the base with a slight S-like curvature. 
Stems bearing the leaves in two rows. Perhaps the only 
species at present in cultivation is I. linearis.. For 
culture, see 
linearis (l small, in shori spikes, Spring, 
= short, Se ns tl ye: ish, am stems lft . high. exico, 
&e., to Brazil, 1791. EECA 1341.) 
This genus is now included, | Fes 
ISOLEPIS. 
authors of the “Genera Daas” — 
—— see). 
— slender). A garden. name * Scirpus tns 
(which see). ‘ - = 
ISOLOMA (from isos, equal, and — ier; o 
of corolla equal). Syn. Kehleria. Including Brachyloma, 
. Calycostemma, Pearcea, and Tydea. ORD. Gesneracee. 
A genus comprising about sixty species of ornamental 
stove herbs, often confused with i re and Gesnera, 
en, oF sp 
Leaves opposite, often- softly villous. For 
Gesnera. 
1. bogotense (Bogo tan). fl. copious, rather large, dro 
ant years rich red above, streaked and — 
funnel-shaped, gibbous above; limb 
trose; inside of the 
I. Ceciliæ (Cecilia Franchomme’s). —— —— Com: 
alhanin ON. T — 
dinamarca, 1877. 
Vol. IL T 
Isoloma—continued. 
I. 4 
— — —— A. orange-red, in four-flowered 
vato- 
ted and —— — oS as lee tae — 
ual. Summer, Z, 3in, to 6in. | iin ean 
and ‘decussate, te, petiola a oe ee! acuminate, 
: su 
y dollezod;, a 
tted purple ; ‘panies toe, 
do 
gg A s erect, hairy, 
(Foxglove-flowered la 
corolla sh: , rosy- 9— above, whe | oe 
spotted — crimson ; limb green, 
terminal. 1. large, ovate-acuminate, hairy 
New Grenada, 
, calyx five-toothed, 
in, pot Inne sa Pag mcrae 
mouth contracted. limb’ f five sh ual ing l 
clothed with bright 36 aa? ——— nat —— 
i opposite, spreading, ovato, toe gether, hal —* 
ne 
code se ae in. to fin. 8 — oreet Tr J 
ow Grenada bas, i oh is plant —— 
py Antes 4 og the year. yom —— hondensis (under which 
name it is figured iB M. 421 on 
—— testy gi sige ater ae ses 
t, nearly —** 
cordate-ovate, —— geal ren, irav traversed ved by 
se i emer a, Ern Gle 
Spare oe by a deep > He pen ns 
— —— — —— 
—— l tubes aie a dash of yellow and 
e; ovate, hairy, ol — 
* nd neal v 4 eins — — 
v 5 
Rounder, 3 * 
molle three to five i extremely short 
F peduncles (soft). — = Pa n Lag mee 9 
— roTg ly etc 
S 
—— YN, Gesneria mollis (under which name it 
figured in B. M. BID) 
ocellatum eyleted). “y hai , tube red; corolla } 
"i ‘ : Mae p —— 
a black 
ted — 
Gaara SH dP Pu a bat — 
name it is figured in B. M. 4359). 
ted in —— fe 
Z. plotuna (pain df —— E. t 
pene 
f ones 
or ma, 1 ByN. |: 
aniier which name is figured in B. M. 4508), 
in umbels of three, on s 
ig spotted rentrcone, densely, “calyx 
3 ; um ve- ad; caly 
Summer. l n. to bin.. 
+” 
name tt fs figured in a 
ISOLOMA (of J. Smith). See — oer 
——— (from iae see, al EEEE t 
arideæ. A pa 
half-b iduous shrub, having a d 
a long tap root, and a very 
