THE DICTIONARY OF GARDENING, 
Iris—continued. 
broad, as long as the broad claw ; standards oblanceolate, erect, 
jin. in. broad ; spathe 2in, to 3in. deep, with lanceolate, acuminate 
valves. May and June, l. numerous, superposed, terete, under 
one line thick ; lower ones 1ft. — Stems flexuose, terete, lit. 
to 14ft. high, ‘ending in a gs spathe. North Africa, 1869. 
In Algeria, according to Mr. Baker, the bulbs of this species 
are eaten. . M. 5890.) 
Fig. 335. IRIS PERSICA. 
I. ca (Persian).* fl. violet-scented ; limb 1łin. to 
n. deep; falls oblong-spathulate, sin. broad, cuneate 
at the base, pale yellowish-lilac, with a bright yellow 
s keel, eae at the edges. February and March. 
Stem — 'l, four or five in a basal tuft, linear, re- 
curved, to šin. long at the flowering season. ‘Asia 
Aino bo South Persia Fig. 335. (B. M. 1.) 
I. reticulata (ne ft tube 2in. to 3in. long, exserted ; 
limb deep vole —— 1}in. ; lamina of falls —— half 
sa ing, as th — W, with a narrow paler keel, 
viole! 
j —— Bg oblanceolate ; 
growing after- 
h of lft, or more, one "ine thick. Caucasus, 
(B. M. 5577; L. B. C. 1829; R. G. 452; S. B. 
wards to a len 
&e. See Fig. 
F. G. ser. ii. 189. 
“This “ differs from the type in being 
` with a tube not exserted from the 
— a more ~ pang te with the 
— , and the claw not 
1 with blotches and 
: o: KN oe 
, tube 13in. 1 limb lilac-purple, 
shorter than the panduriform 
ate ; spathes two-flowered, Sin. to 
te valves. ., lower ones linear- 
. broad after leaving he stem ; 
Lr. 
nearly or — ina 
spathe, and the — 
yellow keel of th 
t 
Iris—continued. 
er ones gradually smaller. Stem stout, terete, aft. to 3ft. high, 
aiding H a single spathe. Tangiers, 1872. (B. M. 6775 5.) 
vulgare (common).* A., tube scarcely any; limb 2in. to 2sin. 
falls with an orbicular reflexing blade lin. broad and deep, 
ed with bright purple down the centre, and a broad erecto- 
atent claw ; standards purple, erect; spathe valves 3in, to 4in. 
ban June. l. four or aa Jow the spathe valves ; lowest lft. 
or more long, linear-sub-terete, deeply ee — ones 
gradually resembling the spathe valves. — ee 
one or two-flowered, Portugal, 1596. ee Fix. ESA M. 6 
under name of I. Xiphium.) 
1. vulgare 
— 
Fig. 337. IRIs VULGARE, showing Habit and detached Flower. 
I. v. lusitanicum (Portuguese). f/i. bright yellow, or more or less 
suffused with brown. (B. M. 679, under name of I. lusitanica.) 
I. xiphioides (Xiphion-like).* fl., limb di le, 24in. 
3in. deep ; blade of falls a ene, flushed — own down 
the face, and rather exc the deltoid — standards purple, 
erect, oblanceolate ; spathe about šin. * l. about six 
liver pase lf! eee ee Stem below 
lower ones lft. lo: 
Stem lft. to 2ft. 
IRISH HEATH. See Dabæcia polifolia. 
IRIS-ROOT. The same as Orris-root (which see). 
IRON-TREE. See Parrotia persica. 
IRON-WEED. See Vernonia. 
TRONWOOD. A name applied in different countries 
_ to various trees with hard timber. Jn the United States, 
it is used for Carpinus americana and Ostrya virginica.” 
IRONWORT. See Sideritis, 
IRREGULAR. Applied to flowers, * — 
— i tine, ee 
ISANDRA. Included under Thysanotus (which 
see). 
ISATIS (the old Greek name, — by Dioscorides). 
ORD. Crucifere. This genus comprises from twenty-five to 
thirty species of erect, branched, annual or biennial herbs, 
spread over Southern Europe and Western Asia. Flowers 
often yellow, loosely racemose, ebracteate. Leaves entire, 
stem ones sagittate. The only species worthy of mention 
here is the one described below. Ee mnened by seoda 
a l 
r 
