AN ENCYCLOPEDIA OF HORTICULTURE. 



171 



Hypoxis continued. 



H. elata (tall), jl. golden-yellow, 2in. in diameter ; peduncles IJin. 

 long, slender ; scapes numerous, shorter than the leaves, bearing 

 many-flowered racemes. June. 1. very numerous, 1ft. to lift, 

 long, spreading and revolute, thinly villous above, thickly hairy 

 below. Natal, 1862. (B. M. 5690.) 



H. erecta (erect), jl. yellow ; scape four-flowered ; peduncles 

 twice as short as leaves. June and July. I. linear-lanceolate. 

 h. 6in. North America, 1752. Plant hairy. See Fig. 262. 

 (B. M. 710.) 



H. latifolia (broad-leaved). Jl. bright yellow, large, green exter- 

 nally ; peduncles axillary ; racemes spicate, many-flowered. I., 

 lower ones squamiform upwards, about 6in. long, broad-lanceo- 

 late, acuminated ; upper ones narrowest, becoming gradually 

 elongated, 2ft. long. Natal, 1854. (B. M. 4817.) 



H. longifolia (long-leaved), fl., perianth golden-yellow within ; 

 outer segments lanceolate, sub-acute, green and villous on the 

 back ; inner rather broader, with a dorsal green villous midrib ; 

 umbel four or five-flowered ; scapes several, much shorter than 

 the leaves. August, t. numerous, the outer 2ft. long, spreading 

 on the ground ; the inner sheath sub-erect ; sheath broad, mem- 

 branous, 2in. to 4in. long ; blade grass-like, very slender, flaccid, 

 bright green, with a few scattered hairs on the margin and keel. 

 Stems tufted, h. lift. Algoa Bay, 1871. (B. M. 6035.) 



H. Stellata (star-like).* fl. white, blue ; scape one-flowered, 

 shorter than the leaves. April to June. I. linear-lanceolate, 

 loose-keeled, h. 9in. Cape of Good Hope, 1752. (B. M. 662.) 

 The variety figured in B. M. 1223 is elegant. 



HYSSOP (Hyssopus officinalis). An aromatic ever- 

 green bushy herb, native of Southern Europe. It is 

 cultivated for the use of its flowers and tops, which are 

 steeped in water to make an infusion sometimes employed 

 as an expectorant. There are three varieties, known 

 respectively by their blue, red, and white flowers. They 

 may be propagated by seeds, sown in April ; by dividing 

 the plants, in spring or autumn ; or by cuttings, made 

 in spring, and inserted in a shady situation. Plants 

 raised from seeds or cuttings should, when large enough, 

 be planted out, about 1ft. apart each way, and kept 

 watered until established. They succeed best in a warm 

 aspect, and in a light, rather dry soil. The plants require 

 cutting-in occasionally, but do not need much further 

 attention. Varieties of Hyssop are sometimes employed 

 as edging plants. 



HYSSOPUS (from Hyssopos, the old Greek name, used 

 by Hippocrates). Hyssop. OBD. Ldbiatce. A monotypic 

 genus, the species being a hardy shrubby plant. For 

 culture, &c., see Hyssop. 



XL officinalis (officinal), fl. bluish-purple, rarely white ; whorls 

 six to fifteen-flowered. June to September. I. elliptic or linear. 

 h. 1ft. to 2ft. Mediterranean region and Central Asia, 1548. 



See Celsia buguli- 



IANTHA. See lonopsis. 

 IANTHE BUGULIFOLIA. 

 folia. 



IANTHINE. Pure blue stained with red, so as to 

 be intermediate between the two colours. 



IB ATI A. A synonym of Lacknostoma (which see). 



IBBETSONIA (named in honour of Mrs. Agnes 

 Ibbetson, the author of several papers on Vegetable 

 Physiology, published in " Nicholson's Philosophical 

 Journal "). A small genus of shrubby greenhouse Cape 

 plants, now referred to Cyclopia. For cultivation, see 

 Podalyria. 

 I. genistoides (Genista-like). /. yellow, pea-shaped, with an 



irregular purplish-brown spot at the base. Summer. I. sessile, 



ternate; leaflets narrow-linear with strongly revolute margins. 



A. 3ft. to 5ft. A much-branched glabrous shrub. (B. M. 



1259). 



XBEBJDELLA (a diminutive of Iberis). OED. Cm- 

 ciferce. A genus comprising six species of herbs or sub- 

 shrubs, natives of the mountains of Syria, Persia, and 

 Asia Minor ; one being from the Himalayas. I. rotundi- 

 folia, the species usually seen under cultivation, is a 

 very pretty, densely-tufted, spreading, alpine, herbaceous, 

 tap-rooted plant, requiring a rather light soil. It may 

 be freely increased by seeds, or by divisions. 



Iberidella continued. 



I. rotundifolia (round-lea ved).* ft. rosy-lilac, with a yellow eye, 

 fragrant, about iin. in diameter, and disposed in erect, cylin- 

 drical, crowded racemes. April. I. opposite, fleshy, broadly- 

 ovate, h. 3in. to 6in. European Alps, 1868. (B. M. 5749.) 



IBERIS (from Iberia, the former name of Spain). 

 Candytuft. OBD. Cruciferce. A genus comprising twenty 

 species of annual or biennial herbs or sub-shrubs, from 

 South Europe and Western Asia. Flowers white or 

 purple, racemose or corymbose ; petals four, two outer 

 ones largest. Leaves alternate, linear or obovate, entire 

 or pinnatifid. Stems round, usually smooth. All the 

 species are of easy culture in ordinary garden soil, if 

 the position is well exposed to sun and air. The annuals 

 and biennials are increased by seeds. For summer 

 flowering, sow in March or April, and in August or 

 September for a spring display. A light sandy soil is 

 most suitable for sowing the seeds in. The sub-shrubby 

 sorts are handsome, compact-growing plants, admirably 

 adapted for the fronts of shrubberies and herbaceous 

 borders. These species may be increased by seeds, sown 

 in spring ; but the most usual method is by cuttings, or 

 by divisions, the latter of which are easily effected. 

 X. amara (bitter). Common Candytuft. Jl white, corymbose, finally 



racemose. June. I. lanceolate, acute, somewhat toothed, h. 6in. 



to 12in. Western Europe (Britain), Annual. 

 I. a. hesperidifolia (Hesperis-leaved). An improved form of the 



type ; larger, and very pretty, h. 1ft. 

 I. Bernardiana (Bernard's). JL pink, corymbose. Summer. 



I. spathulate, lobed, deep glossy gvcen, forming dense compact 



rosettes, h. oin. Pyrenees. Annual. SVN. /. Bubanii. 

 I. Bubanii (Buban's). A synonym of /. Bernardiana. 

 I. ciliata (ciliate). Jl. white. June and July. I. linear, entire, 



ciliated at the base. h. 9in. South-western Europe, 1802. Plant 



herbaceous, rather smooth. Biennial. (B. M. 1030.) 

 I. C. tanrlca (Taurian). Jl. white, corymbose. May to July. I. 



ciliated, somewhat fleshy; lower ones spathulate, somewhat 



bidentate at the apex ; upper ones linear, h. bin. to 9in. Tauria, 



1802. Annual or biennial. 



FIG. 263. FLOWERING BRANCH AND DETACHED FLOWER OF 

 IBERIS CORONARIA. 



I. coronaria (crown-flowering).* Rocket Candytuft fl. pure 

 white, in numerous long, dense heads or spikes at the tops of the 

 stems. July. 1. lanceolate, coriaceous, entire, h. 1ft 1836. 

 Native country uncertain. Annual. See Fig. 263. (S. B. F. G. 

 ser. ii. 359.) The variety known as the "Giant Snowflake" is a 

 very fine form. 



I. corresefolia (Correa-leaved).* Jl. white, large, disposed in com- 

 pact flat heads ; but, as the steins become elongated, and the 

 succession of buds open, a long round cluster is formed by the 

 old flowers remaining, such heads or spikes being Sin. long. May 

 and June. 1. spathulate, obtuse, entire, smooth, about liin. long. 



