GOU 



[ 390 ] 



GEA 



Q. herba'ceum (commo/t-herbaceous). 3. Yellow. 

 July. E. Ind. 15Q4. Annual. 



Fndicum (Indian). 3. Yellow. August. E. Ind* 



1800. Biennial. 



latifo'lium (broad-leaved). 5. Yellow. July. 



1800. Evergreen shrub. 



obtusifu'lium (blunt-leaved). 5. Yellow. July. 



E. Ind. Evergreen shrub. 



religio'sum (religious). 3. Yellow. July. India. 



1777 Herbaceous perennial. 

 GOUA'NIA. (Named after A. Gonan, 

 once professor of botany at Montpelier. 

 Nat. GTcdi^Rhamnads [Rhamnacese] . Linn., 

 23-Polygamia 2-Dicecia. Allied to Tryma- 

 lium.) 



Evergreen stove climbers. Cuttings of half- 

 ripened shoots in sand, under a bell-glass, in 

 bottom-heat ; fibry peat and sandy loam. Sum- 

 mer temp., 60 to 80 ; winter, 50 to 58. 

 G. cordifo'lia (heart-leaved). 10. Yellow. Rio 

 Janeiro. 1820. 



Dominge'nsis (St. Domingo). 10. Yellow. W. 



Ind. 1739. 



integrifo'lia (entire-leaved). 10. Green, yellow. 



1800. 



Mauritia'na (Mauritian). 10. Green, yellow. 



Mauritius. 1823. 



tiliafo'lia (lime-tree-leaved). 10. Yellow. July. 



E. Ind. 1810. 



tomento'sa (woolly). 10. Green, yellow, W. 



Ind. 1823. 



GOUED. Cucu'rbita. 



GOVE'NIA. (Named after J.R. Gowen, 

 a distinguished horticulturist, and cross- 

 breeder of plants. Nat.ord., Orchids [Or- 

 chidacese]. Linn., 2Q-Gynandria l-Mo- 

 nandria. Allied to Batemannia.) 



Stove terrestrial orchids. Divisions of the plant ; 

 peat and loam, with a little charcoal and silver 

 sand. Summer temp.. 60 to 85 : winter. 50 to 

 55. 



G.fascia'ta (banded-flowered). 1^. Yellow. Ja- 

 nuary. Mexico. 1843. 



Ga'rdneri (Gardner's). 2. Green, yellow. De- 



cember. Organ Mountains. 1837. 

 t lageno'phora (bottle-bearing). lj. White. 

 January. Mexico. 1844. 



lilia'cea (lily -flowered}. 1. White. July. 



Mexico. 1837. 



supe*rba (superb). 5. Yellow. March. Mexico. 



1828. 



utricula'ta (bladdery-sAeaMed). l. Cream. 



August. Jamaica. 1843. 



GBJE'LLSIA. ( Name unexplained. Nat. 

 ord., Crucifers [Brassicacese]. Linn., 15- 

 Tetradynamia. Allied to Cochlearia.) 



Hardy herbaceous plant, suited for rock-work ; 



common, sandy soil ; division, and cuttings under 



a hand-light, in sandy soil, in summer. 



Q. sanifragcefo'lia (saxifrage -leaved), f . White. 



July. Persia. 1844. 



GRAFF, or GRAFT. This, also called 

 the scion, is the portion of a branch se- 

 lected to be inserted or grafted upon a 

 stock or rooted stem, to form the head of 

 the future plant. See GRAFTING and 

 .STOCK. 



GRAFTING is uniting a scion of one 

 plant to the root, branch, or stem of 

 another. The scion and stock must be 

 of nearly-related species. 



The objects of grafting are : 1st. To 

 ncrease choice kinds. 2nd. To increase 

 the vigour of delicate kinds. 3rd. To 

 reduce the vigour of those which are too 

 gross. 4th. To accelerate the period of 

 fruiting. 5th. To adapt kinds to soils for 

 which they would be unfitted on their 

 own roots. 6th. To renovate old kinds. 

 We now proceed to give a series of 

 cuts, illustrative of all the modes which 

 are usual in general horticulture : 



1. Whip Grafting, called also Splice 

 and Tongue Grafting. This is the most 

 ommon mode, and is that almost uni- 

 versally adopted in our nurseries; and 

 ,vhen the stock and scion are equal 

 in size, is perhaps the handiest. The 

 head of the stock is pruned 

 off at the desired height, and 

 then a slip of bark and wood 

 removed at the upper portion 

 of the stock, with a very clean 

 cut, to fit exactly with a cor- 

 responding cut which must be 

 made in the scion. A very 

 small amount of wood must be 

 cut away, and the surface 

 made quite smooth. Care must 

 be taken that no dirt be upon 

 the cuts in this, and, indeed, 

 in all the other modes. The 

 scion must now be prepared. 

 This should have at least three 

 or four buds, one of which 

 should, where possible, be at 

 the lower end, to assist in uniting it to 

 the stock. A sloping cut must now be 

 made in the scion : this cut must corre- 

 spond with that on the stock, and a slit 

 made to fit in a cleft made in the stock 

 when heading it. This slit serves to 

 maintain the scion steadily in its place 

 until properly fastened, and is more a 

 matter of convenience than anything 

 else. Care must be taken that the 

 scion fits bark to bark, on one side at 

 least; for it is not the old or existing 

 portion of wood that forms the union, 

 but a tissue which has to be produced, 

 just as when the sides of a wound have 

 to be reunited. This power exists in the 

 alburnous matter, which lays next the 

 inner bark; and the substance which 

 forms the union, and which is secreted 

 by the returning sap, is termed cambium. 



