IRIS—JUNCXJS. 
107 
IRIS. 3—1. ( Iridees .) [From iris, the rainbow.] 
crista/'ta, (b-y. Ap. Of.) bearded; beard crested ; scape general^ I-flowered, 
as long as the leaves. 2-4 f. S. 
tri'petale , (E. M. 2]..) beardless-; stem terete, longer than the leaves; rudi¬ 
ments of the inner petals 3-toothed ; middle tooth acuminate. 2 f. S. 
cupre'a, (r-y.) beardless; stem terete, flexuous, equalling the leaves; capsules 
large, 6-angled. 3 f. $. 
ver"na , (b. M.) without beard or stem; I-flowered; leaves grass-like; tube 
very long. On the earth. S. 
versid'olor, (blue-flag, b. J. 2L.) leaves ensiform ; stem acute on one side ; cap¬ 
sules oblong, 3-sided, with obtuse angles. 2-3 f. 
prismal"ica, (b. y. J. 2J_.) flowers beardless; leaves linear ; stem round,many- 
flowered ; germs triangular, twice grooved on the sides. 1-2 f. 
plica'La, (garden iris, p. w. M. 2]..) bearded ; stem many-flowered, higher than 
the leaves; petals undulate-plicate, erect ones broadest. 18-24 i. Ex. 
pu’mila , (dwarf flower-de-luce, b. M. 2j_.) 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. (Labiates,.) [From isos, equal, anthos, flower.] 
caeru'leus, (blue gentian, false pennyroyal, b. Ju. fy>.) viscid, hairy; leaves 
lance-oval, acute at both ends, 3-nerved ; peduncles 1-2-flowered. 
ISATIS. 14—1. ( Crucifercs .) [Name given by Dioscorides, origin unknown.] 
tincto'ria, (woad, J. J'.) radical leaves crenate, caulineones sagittate, oblong. 
ITEA. 5—1. ( Saxifrages.) 
virgin"ica, (w. J. f>.) leaves alternate, lanceolate, acuminate, serrulate, pu¬ 
bescent beneath ; flowers in terminal racemes. 4-8 f. 
IV A. 17—4. ( Corymbifercs.) 
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. (Iridees.) [From iksos, glue, from the gummy juice of some plants which first 
bore the name.] 
chinen"sis, (blackberry lily, y. r. J. %.) corolla about 6-petalled; stem flexu¬ 
ous ; leaves ensiform. Ex. 
codes"tina , (b. M. 2]-.) leaves linear-subulate, much shorter than the l-flower¬ 
ed scape. S. 
JASMINUM. 2—1. (Jasmines.) [From ion, a violet, and asms, odour.] 
fruti'eans, (jasmine, y. H) leaves alternate, ternate, simple; leafets obovate, 
wedge-form, obtuse; branches angled. Ex. 
offcina'le, (jasmine, w. k>) leaves pinnate, opposite ; leafets acuminate. Ex. 
JATROPHA. 19—15. (Euphorbias.) [From Jatros, an ancient physician.] 
stimulo'sa, (w. Ju. 2J-.) hispid, with prickles; leaves palmate-lobed; lobes 
toothed; cymes short-peduncled. 6 8 i. S. 
elas"tica, the juice affords the elastic gum called caoutchouc, or Indian-rubber. 
maivi'hot, affords the cassada root. (S'. 
JEFFERSONIA. 8—1. (Papaveracece.) [In honour of Thomas Jefferson, named by Barton.] 
diphyV'da, (twin-leaf, w. M. 2]..) stemless; peduncles naked, l-fiovrered; 
leaves in pairs. 
JUGLANS. 19-12 (Terebintacees.) 
cine'rea, (butternut, M. T7.) leafets numerous, lanceolate, serrate, rounded at 
the base, soft-pubescent beneath; petioles villose; fruit oblong-ovate, vis¬ 
cid, long-peduncled. 
JUNCUS. 6—1. (Jnnci.) 
effu'sus, (2j..) 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* 
