AN ENCYCLOPEDIA OF HORTICULTURE. 



221 



KOELREUTERIA (named after Joseph G. Koel- 

 reuter, 1733-1806, once Professor of Natural History at 

 Carlsruhe). OBD. Sapindacece. A monotypic genus. The 

 species is a small, handsome, hardy deciduous tree, from 

 North China, having a picturesque, irregular habit of 

 growth. Any ordinary garden soil suits it ; but it thrives 

 best, and flowers most freely, in a sheltered situation. 

 Propagated by cuttings of the young shoots, in spring ; 

 or by layers, in early autumn. 



Fio. 363. KOELRHUTERIA PAMCULATA, showing Leaf and Portion 

 of Inflorescence. 



K. panlonlata (panicled).* JL yellow, disposed in large, terminal, 

 many-flowered, branched panicles. June and July. fr. or cap- 

 sule "large, vesiculate, inflated, three-lobed, very conspicuous in 

 autumn. I. alternate, exstipulate, deciduous, impari-pinnate ; 

 leaflets opposite or alternate, membranaceous, deeply toothed. 

 A. 10ft. to 15ft. 1763. See Fig. 363. (B. R. 330.) 



ECEXIGA (name revived by Eobert Brown, in com- 

 memoration of Charles Kosnig, formerly of the British 

 Museum). OBD. Cruciferoe. A small genus of very 

 pretty hardy plants, included, by Bentham and Hooker, 

 under Alyssum, but which, for garden purposes, may be 

 kept distinct. Flowers racemose or clustered ; petals 

 entire ; pouch sub-ovate, with flattish leaves ; cells one or 

 few-seeded. The species are of easy culture in any 

 ordinary soil, and may be increased by seeds, sown in 

 spring. 

 K. maritima (sea). Common Sweet Alyssum. fl. white, smalli 



very sweet-scented ; racemes terminal, somewhat leafy at the base. 



Spring. 1. quite entire, almost linear, hoary, h. 6in. to 9in. 



Europe. This elegant little, much-branched, self-sowing annual 



is an excellent bee plant. SYN. Alyssum maritimum. (Sy. En. B. 



Koenig'a continued. 



K. m. variegata (variegated). I. edged with white or yellow. 



A very effective, half-hardy plant, requiring protection during 



winter. 

 K. spinosa (thorny).* fl. white, in small terminal clusters. 



Early summer. I. lanceolate, acute, silvery. Stem shrubby ; old 



branches and peduncles spiny, ft. 4in. to Sin. France, 1683. A 



pretty alpine. SYN. Alyssum spinosum. 



KOHIcRABI (Brassica oleracea Caulo-rapa). Kohl- 

 Rabi is a very distinct vegetable, not very largely cul- 

 tivated, except as a field crop. It comes between the 

 Cabbage and Turnip, and is generally used as a substitute 

 for the latter. The upper part of the stem swells into 

 a large fleshy head above ground, resembling a Turniu 



FIG. 564. KOHL-RABL 



(see Fig. 364). Kohl-Rabi has several advantages over 

 some other vegetables, and consequently deserves a place 

 in gardens. It is exceedingly hardy, withstanding even 

 severe frosts, and also resists drought much better than 

 the Turnip. 



Cultivation. Like all other plants of the Brassica 

 tribe, Kohl-Rabi is raised from seed, which should be 

 sown outside (any time from April to June, inclusive), 

 in an ordinary seed bed, or where the crop is intended 

 to be grown. In the former case, transplant, when 2in. 

 high, into any good, well-manured ground, allowing a 

 distance of about l^ft. between the rows, and 1ft. in 

 the rows; and, if the latter plan is adopted, thin out 

 to these distances. Water should be given for a time 

 until fresh roots are emitted. An occasional hoeing, 

 to keep the surface soil open and clean, is nearly all 

 that will be necessary for after-treatment. The fleshy 

 heads are fit for use when about the size of a Dutch 

 Turnip. The crop is frequently of great importance 

 when failure with Turnips is caused by insects or drought, 

 which seldom affect the Kohl-Eabi. 



Sorts. There are about half-a-dozen sorts in culti- 

 vation, but only two are recommended for garden 

 purposes ; the others are more or less coarse and 

 vigorous in habit. These are Early Purple Vienna 

 and Early White Vienna, dwarf and useful sorts, the 

 bulbs varying chiefly in the colour of their skins. They 

 are not good if allowed to get old and large before 

 being used. 



KOLA-NUT TREE. See Cola. 



KOPSIA (named after Jan Kops, 1765-1849, Professor 

 in Utrecht). SYN. Calpicarpum. OBD. Apocynacece. A 

 genus comprising four species of stove, evergreen, glabrous 

 trees or shrubs, allied to Oerbera; they are natives of 

 the Malayan Peninsula and Archipelago. Flowers white 

 or pink, very ornamental, in short cymes ; corolla salver- 

 shaped ; tube elongated, slender. Leaves opposite, mem- 



