IRIS-JUNCUS. 
107 
IRIS. 3—1. ClridetE.) [From iris, the rainbow.] 
crista/ta, (b-y. Ap. 'Zj-.) bearded ; beard crested ; scape generally 1-flowered, 
as long as the leaves. 2-4 f. (S. 
tri'peiaLe, (E. M. beardless; stem terete, longer than the leaves; rudi- 
ments of the inner petals 3-toothed ; middle tooth acuminate. 2 f. S. 
mpre'a, (r-y.) beardless; stem terete, flexuous, equalling the leaves; capsules 
large, 6-angled. 3 f. S". 
ver'^tia, (b. M.) without beard or stem; 1-flowered; leaves grass-like; tube 
very long. On the earth. (S*. 
versic"olo7', (blue-flag, b. J. %.) leaves ensiform ; stem acute on one side ; cap- 
sules oblong, 3-sided, with obtuse angles. 2-3 f. 
prismaV'ica, (b. y. J. %.) flowers beardless; leaves linear ; stem round, many- 
flowered ; germs triangular, twice grooved on the sides. 1-2 f. 
plica' ta, (gardeu iris, p. w. M. %.) bearded ; stem many-flowered, higher than 
the leaves; petals undulate-plicate, erect ones broadest. 18-24 i. Ex. 
pii'mila, (dwarf flower-de-luce, b. M. %.) bearded ; scape l-flowered ; leaves 
ensiform, glabrous; tube of the corolla exsert; petals oblong, obtuse. 6-10 
i. Ex. 
ochroleu'ca, (yellow iris, y. M.) beardless ; leaves ensiform, depressed, striate ; 
scape sub-terete; germ 6-cornered. Ex. 
ISANTHUS. 13—1. (Labiat(B.) [From isos, equal, anthos, flower.] 
ccBru'leus, (blue gentian, false pennyroyal, b. Ju. 0.) viscid, hairy; leaves 
lance-oval, acute at both ends, 3-nerved ; peduncles 1-2-flowered. 
ISATIS. 14 — 1. (CrucifercB.) [Name given by Dioscorides, origin unknown.] 
tincto'ria, (woad, J. (^.) radical leaves crenate, cauline ones sagittate, oblong. 
ITEA. 5—1. (SaxifragcB.) 
virgin"ica, (w. J. 17.) leaves alternate, lanceolate, acuminate, serrulate, pu- 
bescent beneath ; flowers in terminal racemes. 4-8 f. 
IVA. 17—4. (Corijmbifer(B.) 
frutes'cens, shrubby ; leaves opposite, lanceolate, deeply serrate ; heads glob- 
ular, depressed. Sea-coast. 3-8 f. High-water-shrub. Flowers green. 
IXIA. 3—1. (IridecB.) [From iksos, glue, from the gummy juice of some plants which first 
bore the name.] 
cJiinen^sis, (blackberry lily, y. r. J. %..) corolla about 6-petalled ; stem flexu- 
ous ; leaves ensiform. Ex. 
ccsles'^tina, (b. M. %..) leaves linear-subulate, much shorter than the l-flower- 
ed scape. S. 
JASMINUM. 2—1. (Jasminis.) [From ion, a violet, and asme, odour.] 
fruti'cans, (jasmine, y. leaves alternate, ternate, simple; leafets obovate, 
wedge-form, obtuse; branches angled. Ex. 
officina'le, (jasmine, w. T2 ) leaves pinnate, opposite ; leafets acuminate. Ex, 
JATROPHA. 19 — 15. (Euphorbice.) [From Jairos, an ancient physician.] 
stimulo'sa, (w. Ju. %..) hispid, with prickles; leaves palmate-lobed ; lobes 
toothed; cymes short-peduncled. 6 8 i. 8. 
das''tica, the juice aflfords the elastic gum called caoutchouc, or Indian-rubber 
mani'hot, affords the cassada root. S. 
JEFFERSONIA. 8—1. (PapaveracecB.) [In honourof Thomas Jefferson, named by Barton.] 
diphyV'da, (twin-leaf, w. M. '2|..) stemless; peduncles naked, 1-flowered j 
leaves in pairs. 
JUGLANS. 19 - 12 (TerebintacecB.) 
cme'rea, (butternut, M. T7.) leafets numerous, lanceolate, serrate, rounded at 
the base, soft-pubescent beneath; petioles villose; fruit oblong-ovate, vis- 
cid, long-peduncled. 
JTJNCUS. 6—1. {Jund.) 
effu'sus, (Qj-.) scape minute-striate, (soft;) panicle loose", very branching, 
spreading; leafets of the calyx lanceolate, acuminate, rather longer than 
the obovate, obtuse capsule. 2-3 f 
30* 
