IMPATIENT 



454 



INDIGOFERA 



vigorous growth. At the last potting about half the 

 compost consisted of well-rooted and dried cow-dung 

 rubbed up fine. Liquid manure was also given when 

 the pots were fairly filled with roots, and towards flower- 

 ing-time abundance of air was given. 



IMPATIENT. A plant is said to be impatient of heat 

 or cold when it is speedily injured by a slight excess of 

 either one or the other. 



IMPREGNATION. No seed ever attains the power of 

 germinating, unless the pollen from the stamens in the 

 same, or some nearly allied flower, has reached and 

 impregnated its pistils. In favourable seasons, when 

 genial warmth and gentle winds prevail, impregnation is 

 readily effected by the plant's own provision. The pollen 

 of the same flower, in many cases, is shed before the 

 stigma of the pistil is fully developed, but such flowers 

 are dependent upon insects or the wind, and other 

 flowers supply pollen at the time it is required. The 

 stigma soon withers after it is applied. 



Insects aid in effecting this impregnation, and in 

 frames, hothouses, &c., from whence they are almost 

 totally excluded, other artificial means might be adopted 

 with success to render flowers fertile that had hitherto 

 failed in producing seed. Thus the gardener always 

 finds the advantage of using the camel-hair pencil to 

 apply pollen to the stigmas of his forced melons, cherries, 

 and peaches. See HYBRIDISING. 



INARCHING, or grafting by approach, differs Irom 

 grafting only in having the scion still attached to its 

 parent stem whilst the process of union with the stock 

 is proceeding. It is the most certain mode of multiplying 

 an individual that roots or grafts with difficulty, but is 

 attended with the inconvenience that both the stock and 

 the parent of the scion must be neighbours. One or 

 both plants may be in pots, which make the operation 

 easy. In the case of Vines, the scion may be put with 

 its end in a bottle of water, and so kept fresh while a 

 union is being formed. 



Having the stocks properly placed, make the most 

 convenient branches approach the stock, and mark in the 

 body of the branches the parts where they will most 

 easily join to the stock, and in those parts of each branch, 

 pare away the bark and part of the wood two or three 

 inches in length, and in the same manner pare the stock 

 in the proper place for the junction of the graft ; then 

 make a slit upward in the branch so as to form a sort of 

 tongue, and make a slit downward in the stock to admit 

 it ; let the parts be then joined, slipping the tongue of 

 the graft into the slit of the stock, making the whole 

 join in an exact manner, and tie them closely together 

 with bass, and afterwards cover the whole with a due 

 quantity of clay, or wax. After this let a stout stake 

 be fixed for the support of each graft, and so fastened 

 as to prevent its being disjoined from the stock by the 

 wind. 



The operation being performed in spring, let the grafts 

 remain in that position about four months, when they 

 will be united, and they may then be separated from 

 the mother-tree. In doing this be careful to perform it 

 with a steady hand, so as not to loosen or break out the 

 graft, sloping it off downwards close to the stock ; and 

 the head of the stock cut down close to the graft, and all 

 the old clay and bandage cleared away and replaced 

 with new, to remain a few weeks longer. Observe, 

 however, that if the grafts are not firmly united with the 

 stock, let them remain another year till autumn, before 

 you separate the grafts from the parent tree. Instead 

 of approach-grafting in the usual manner, it is sometimes 

 convenient to detach shoots of the kinds to be propagated 

 from the plants on which they grew, and inarch them 

 upon the single plant, leaving a piece at the bottom of 

 each shoot sufficiently long to thrust into a phial, which 

 must be kept constantly supplied with water. 



INCARVTLLEA. (In commemoration of P. IncarviUe, 

 a botanical correspondent of the great botanist Jussieu 

 about 1743. Nat. ord. Bignoniaceae.) 



Hardy, herbaceous perennials in most cases. Seeds ; 

 cuttings of young shoots from the base of the plant ; 

 divisions of the root-stock in spring. Well-drained soil. 

 /. argil' ta (acute). See AMPHICOME ARGUTA. 

 compa'cta (compact). Purple. July to September. 

 China. 1880. 



/. Delava'yi (Delavay's). 1-2. Deep purple. China. 



1893. 

 grandiflo'ra (large-flowered) of Poiret. See TECOMA 



GRANDIFLORA. 



grandiflo'ra (large-flowered) of Bur and Franchet. i. 



Rich rose-red. China. 1898. 

 bre'vipes (short-stalked). Flower-stalks shorter. 



S.W. China. 1909. 



,, Koopma'nni (Koopmann's). See I. OLG.C. 

 O'lgce (Queen Olga's). 2-4$ ft. Purple. Turkestan. 



1880. 

 sine'nsis (Chinese). 1-2. Bright red. China. 



Greenhouse. 



,, tomento'sa (felted). See PAULOWNIA IMPERIALIS. 

 varia'bilis (variable). 1-2 Rose-purple. W. China. 

 1899. 



INDEHISCENT. Fruits which do not open at maturity 

 to allow the seeds to escape are said to be indehiscent. 

 The Apple, Cherry, Orange, Melon, and Gooseberry are 

 examples. 



INDIAN BAY. Lau'rus i'ndica. 



INDIAN BLUE. Nympha'a cya'nea. 



INDIAN CRESS. (Tropat'olum.) See NASTURTIUM. 



INDIAN FIG. Opu'ntia. 



INDIAN GRASS. Aru'ndo. 



INDIAN HAWTHORN. Raphio'lepis. 



INDIAN HEMP. Apo'cynum canna'binum. 



INDIAN LOTUS. Nymphce'a Lo'tus. 



INDIAN MULBERRY. Mori'nda. 



INDIAN PHYSIC. Magno'lia Frase'ri. 



INDIAN PINK. Dia'nthus chine'nsis. 



INDIAN SHOT. Ca'nna i'ndica. 



INDIA-RUBBER PLANT. Fi'cus ela'stica. 



INDIGENOUS. Native, or naturally produced. Thus 

 the Crab-tree is indigenous to England. 



INDIGO FERA. (From indigo, a blue dye, and fero, to 

 bear. Nat. ord. Leguminous Plants [Leguminosae]. Linn. 

 iJ-Diadelphia, 4-Decandria.) 



Annuals and biennials, in hotbed, in spring, potted and 

 treated as tender and half-hardy annuals ; shrubby 

 plants, by cuttings of young shoots, getting firm, in 

 summer, in sand, under a bell-glass, and a little bottom 

 heat, especially the tropical species ; sandy loam and 

 peat, equal parts. Red spider is their chief enemy. 



GREENHOUSE HERBACEOUS PERENNIALS. 



I. echina'ta (hedgehog). Red. June. E. Ind. 1824. 



Stove. 



,, gra'cilis (slender). Rose. July. S. Africa. 

 procu'mbens (lying-down). J. Blood. June. S. 



Africa. 1818. 

 sarmento'sa (twiggy). J. Purple. July. S. Africa. 



1786. 



STOVE ANNUALS. 



/. diphy'lla (two-leaved), 1. Purple. July. Africa. 



1816. 

 ,, enneaphy'lla (nine- leaved). 4. Purple. July. E. 



Ind. 1776. Trailer. 

 ,, gla'bra (smooth). See I. PENTAPHYLLA. 

 ,, glandulo'sa (glanded). i. Purple. July. E. Ind. 



1820. 

 lateri'tia (brick-coloured), i. Purple. Guinea. 1806. 



Trailer. 



,, Leschenau'ltii (Leschenault's). See I. TRITA. 

 linifo'lia (flax-leaved), i. Red. July. E. Ind. 1792. 



Trailer. 

 pentaphy'lla (fiye-leafleted). i. Red. July. Trop. 



Asia and Africa. 1820. Trailer. 

 trifolia'ta (three-leaved). J. Purple. July. E. Ind. 



1816. 

 visco'sa (clammy), i. Red. May. E. Ind. 1608, 



