IRIS-JUNCUS. 107 



IRIS. 3—1. {Iridem:) [From iris, the rainbow.] 



crista' taA^-y- Ap. 'Zj..) bearded; beard crested ; scape generally 1-flowered, 

 as long as the leaves. 2-4 f. S'. 



tri'petak, (E. M. '2J..) 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. S. 



ver"na, (b. M.) without beard or stem; 1-flowered; leaves grass-like; tube 

 very long. On the earth. S'. 



versic"oln'r, (blue-flag, b. J. %.) leaves ensiform ; stem acute on one side ; cap- 

 sules oblong, 3-sided, with obtuse angles. 2-3 f. 



prismafica, (b. y. J. %.) flowers beardless; leaves linear ; stem round, many- 

 flowered ; germs triangular, twice grooved on the sides. 1-2 f. 



plica'ta, (garden iris, p. w.M. '4-) bearded ; stem many-flowered, higher than 

 the leaves; petals undulate-plicate, erect ones broadest. 18-24 i. Ex. 



jm'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. 



ochroleii'ca, (yellow iris, y. M.) beardless ; leaves ensiform, depressed, striate ; 

 scape sub-terete; germ 6-cornered. Ex. 



ISANTHUS. 13—1. {LaUatce,.) [From isos, equal, anthos, flower.] 

 cmru'leus, (blue gentian, false pennyro)ral, b. Ju. ©.) viscid, hairy; leaves 

 lance-oval, acute at both ends, 3-nerved ; peduncles 1-2-flowered. 



ISATIS. 14 — 1. (Crucifera.) [Name given by Dioscorides, origin unknown.] 

 tincto'rm, (woad, J. c?.) radical leaves crenate, caulineones sagittate, oblong. 



ITEA. 5—1. iSaxifraga.) 

 virgm"ica, (w. J. \i.) leaves alternate, lanceolate, acuminate, serrulate, pu- 

 bescent beneath ; flowers in terminal racemes. 4-8 f. 



IV A. 17-^. (.Corymbiferct.) 

 fruies'cens, shrubby; leaves opposite, lanceolate, deeply serrate ; heads glob- 

 ular, depressed. Sea-coast. 3-8 f. High-water-shrub. Flowers green. 



IXIA. 3 — 1. (Iridpoi.) [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. 

 c(zles"tina, (b. M. %..) leaves linear-subulate, much shorter than the 1-flower- 

 ed scape. S. 



JASMINUM. 2—1. (Jasminm.) [From ttm, a violet, and osnie, odour.] 

 fruti'caiis, (jasmine, y. b.) leaves alternate, ternate, simple ; leafets obovate, 



wedge-form, obtuse; branches angled. Ex. 

 qfficina'le, (jasmine, w. T2 ) leaves pinnate, opposite ; leafets acuminate. Ex. 



JATROPHA. 19—15. {Euphorbim.) [From Jatros, an ancient physician.] 



stimulo'sa, (w. Ju. %.) hispid, with prickles; leaves palmate-lobed ; lobes 



toothed ; cymes short-peduncled. 6 8 i. iS. 

 elas"tica, the juice afibrds the elastic gum called caoutchouc, or Indian-rubber. 

 mani'hot, affords the cassada root. S, 



JEFFERSONIA. 8—1. (Papaveracea.) [In honour of Thomas JeiFerson, named by Barton.] 

 diphyV'da, (twin-leaf, w. M. %.) stemless ; peduncles naked, 1-flowered; 

 leaves in pairs. 



JUGLANS. 19 - 12 {Terebintaceeb.) 

 cine'rea, (butternut, M. T2.) leafets numerous, lanceolate, serrate, rounded at 

 the base, soft-pubescent beneath ; petioles villose ; fruit oblong-ovate, vis- 

 cid, long-peduncled. 



JUNCFS. 6—1. (Junci.) 

 effu'sus, (%.) 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* 



