AN ENCYCLOPEDIA OF HORTICULTURE. 



181 



Incarvillea continued. 



genus, as now understood, containing three or four 

 species of erect, greenhouse or hardy glabrous perennials, 

 with racemose, bilabiate, tubular flowers. A mixture of 

 loam, peat, and sand, or any light rich soil, will suit them. 

 Propagated by divisions of the roots, or by seeds. 



L compacta (compact), fl. bright rose-pink, disposed in clusters ; 

 corolla about 2iin. in length, funnel-shaped. Summer. I. unequally 

 pinnate, with" short, ovate-acute segments, fleshy, tufted or 

 ultimately scattered. North-west China, 1881. Hardy. (R. G. 

 1068.) 



L Koopmannii (Koopmann's). A synonym of 1. Oljce. 



Fio. 288. LNCARVILLEA OLG&, showing Flowering Shoot and 

 detached Single Flower. 



I. Olgaa (Olga's).* fl. bright rose, produced in the upper axils, 

 on very short stalks ; corolla campanulate-infundibuliform, with 

 short, rounded, spreading lobes. Summer. I, opposite, pinnate ; 

 segments narrow-oblong, pinnatifid. h. 3ft. to 4ift. Turkestan, 

 1880. A very handsome hardy perennial. SYN. 1. Koopmannii. 

 See Fig. 288. (B. M. 6593 ; R. G. 1001.) 



X. sinensis (Chinese), fl. nearly sessile, in loose terminal racemes ; 

 corolla scarlet, large. I. alternate, bi- or tripinnate ; segments 

 narrow, h. 1ft. to 2ft. China. Greenhouse. 



INCISED. Regularly divided by deep incisions. 



INCLINING. Bending forwards. 



INCLUDED. Inclosed in anything. 



INCOMPLETE. One of the divisions into which 

 for the requirements of systematic botany the great 

 class of Dicotyledons is divided. The corolla, and often 

 calyx, is quite absent, and "suppression" is carried to 

 its greatest extent. Some of the more important of the 

 orders belonging to the division Incomplete are : Coniferai, 

 Cupuliferce, Salicinece, and Urticacece. 



INCURVED. Curved inwards. 



INDEFINITE. In great number; stamens are said 

 to be indefinite when they are too numerous to count. 



INDEHISCENT. Not opening in a definite 

 manner when ripe. 



INDIAN BLUE. See Nympliaea stellata cyanea. 



INDIAN CORN. See Zea. 



INDIAN CRESS. See Tropaeohim majns. 



INDIAN FIG. See Opuntia. 



INDIAN GARLAND FLOWER. See Hedy- 



INDIAN HAWTHORN. See Raphiolepis. 

 INDIAN MULBERRY. See Morinda. 

 INDIAN FINK. See Dianthus cMnensis. 

 INDIAN SHOT. See Canna. 

 INDIARUBBER FLANT. See Ficus elastica. 



INDIGOFERA (from indigo, a blue dye, and fero, 

 to bear ; on account of some of the species yielding the well- 

 known dye). Indigo. ORD. Leguminosas. A genus com- 

 prising 220 species of stove, greenhouse, or half-hardy 

 herbs, shrubs, or sub-shrubs, the greater number of 

 which belong to the African continent, but abound also 

 in America and Asia, and a few extend to Australia. 

 Flowers usually pink or purple, in axillary racemes or 

 spikes; keel of corolla furnished with a subulate spur 

 on both sides, at length usually bending back elastic- 

 ally. Leaves impari-pinnate or pinnate, rarely digitate 

 or simple. Very few species of this large genus are in 

 cultivation. They are propagated by seeds; or by firm 

 cuttings of young shoots, inserted in sandy or peaty soil, 

 under a hand glass, in a slight heat, in summer. 7. decora 

 is a very desirable greenhouse shrub of moderate growth, 

 which flowers profusely in summer, and is one of the 

 species most generally cultivated. The plants should be 

 cut in, about February or March, and started in a little 

 warmth, when any repotting should also be attended to. 

 They may be hardened, to grow in a cold frame after- 

 wards, and watered freely throughout the growing and 

 flowering period. The wood should be thoroughly ripened 

 by exposure, in autumn, and a season of rest allowed in 

 winter. I. Gerardiana forms a compact bush in the 

 open shrubbery, and is also well adapted for covering 

 walls, where it makes better growths, and flowers more 

 freely. It is one of the hardiest species. Indigoferas 

 succeed in a somewhat rough compost of turfy loam and 

 leaf soil. To insure an abundance of flowers, the wood 

 must be well ripened. 



I. angnlata (angular). A synonym of /. austral/a. 



I. Anil. Anil. fl. pinkish ; racemes axillary, shorter than the 

 leaves. Summer. I. pinnate, with three to seven pairs of oval 

 or oblong leaflets, hardly pubescent beneath. Stems shrubby, 

 erect, h. 2ft. to t. West Indies and tropical America, previous 

 to 1731. Stove. (B. M. 6506.) 



I. atro-purpurea (dark purple). /. dark purple, crimson ; 

 racemes axillary, slender. August. I. pinnate, witn five to seven 

 or ten pairs of oval, retuse, mucronulate leaflets, rather undulated 

 OH margins, h. 5ft. Nepaul, 1816. Half -hardy shrub. (B. M. 

 3065 ; B. R. 1744.) 



I. australis (Southern).* fl. rose-coloured ; racemes rather shorter 

 than the leaves. March to June. I. pinnate, having five to seven 

 pairs of elliptic-obtuse, glabrous leaflets. Stem shrubby, h. 3ft. 

 to 4ft. Australia, 1790. A handsome greenhouse species, with a 

 neat habit; it is an excellent pot plant SYNS. /. angulata 

 (B. R. 991), /. sylvatica (B. M. 3000). (B. R, 386 ; L. B. C. 149.) 



I. decora (comely), fl. reddish, disposed in dense racemes. 

 Spring and summer. /. pinnate ; leaflets two to six pairs, 

 ovate, obtuse, mucronate, and with a few peltate hairs beneath. 

 h. 3ft. China, 1844. Greenhouse evergreen shrub. (B. M. 5063 ; 

 B. R. 1846, 22.) 



X. d. alba (white).* An elegant variety, with long racemes of 

 white flowers ; it thrives well, and proves almost hardy, when 

 planted against a wall. 



X. Dosua (Dosi-swa). fl. bright red ; racemes axillary, shorter 

 than the leaves. Summer. I. pinnate, having ten to fifteen pairs 

 of oval, retuse, mucronulate leaflets, which, as well as the 

 branches, are clothed with rufescent hairs on both surfaces. 

 h. l^ft. India. Greenhouse. 



I. floribunda (profuse-flowering). A garden name of /. Gerard- 

 iana. 



I. Gerardiana (Gerard's).* fl. pale red, in distinctly-stalked, 

 twelve to twenty-flowered racemes. July. I. shortly stalked, 

 pale grey-green, glaucous and hoary below. India. A low, much- 

 branched shrub, perhaps the hardiest species. SYN. /. flori- 

 bunda, of gardens. (B. R. 1842, 57, under name of /. Dosua.) 



I. sylvatica (sylvan). A synonym of /. aiistralig. 



L tinctoria (dyer's).* fl. with a pale vexillum, and red keel and 



wings; racemes axillary, shorter than the leaves. July. /. 



pinnate, with four to seven pairs of obovate leaflets, which are 



pubescent beneath. Stem suffruticose, erect, h. 4ft. to 6ft. 



East Indies, 1731. Stove. This is the most universally cultivated 



of all the species. 

 I. violacea (violet), fl. purple, red ; racemes axillary, longer than 



the leaves. Summer. 1. pinnate, with five pairs of obovate- 



elliptic, flat, slightly pubescent leaflets, h. 5ft. East Indies, 



1819. Half-hardy. (B. M. 3348.) 



INDUMENTUM. The hairy covering of plants, of 

 whatever kind. 



