1264 



ARBORETUM AND FRUTICETUM. 



PART in. 



CHAP. LXXX. 



OF THE HALF-HARDY LIGNEOUS OR SUFFRUTICOSE PLANTS 

 BELONGING TO THE ORDER COBCEA'CEjE. 



• 

 - Coba-'uscdndcns Cav. Icon. Uar. 1. p. 11. 1. 16., N. l)u Ham., 4. 

 t. 5()., and out Jig. 1098., is a tciuirilcd climber, well known for 

 the rapidity of its growth, the fine glaucous green of its smooth 

 leaves and shoots, and the beauty of its large, solitary, axillary, 

 nodding flowers, with bell. shaped violet or [nirplc corollas, and 

 its large, oval, pendent fruit. Plants should either be raised in 

 autumn, and preserved in a pit, and turned out in spring (which 

 is the general practice about I>ondon), or they may be sown in 

 spring, and brought forward in a hot.bed. In mild winters, 

 plants, in dry soil, against a conservative wall, may be preserved 

 alive by covering them with mats. A plant of t'obceV/ scandens 

 against the veranda at the Castle Inn at .Slough, in 1806, is said 

 to have extended its shoots upwards of 100 ft., on each side of 

 the root, in one season. Astonishing effects might be produced 

 by this plant in a single season, if it were thought desirable to 

 incur a little extra expense. By preparing a large mass of turfy 

 loam well enriched with leaf mould, or thoroughly decomposed 

 manure, and by mixing this ma,ss with a quantity of small sand- 

 stones, as recommended by Mr. M' Nab for theculture of thegenus 

 i'rlca, a large fund of nourishment would be produced. Now, 

 in order that this nourishment might be rapidly imbibed by the 

 roots, it would be necessary to supply it with bottom heat early 

 in the season, and with licpiid manure from a surrounding 

 trench, three parts filled with that material, during the whole 

 summer. A plant so treatetl would cover several thousand 

 square feet of surface, either of wall, roof, or of the open ground, 

 in one season. 



CHAP. LXXXI. 



OF THE HARDY AND HALF-HARDY SUFFRUTICOSE PLANTS BELONGING 

 TO THE ORDER CONVOLVULA'ce.^. 



There area few species of Convolvulus which are technically considered shrubby; and, though 

 for all practical purposes they may be treated as herbaceous plants, we shall, for the sake of those 

 who wish to gather every thing into an arboretum that can be included in it, here notice two or 

 three si)ecies. 



-i ConvAlvulus Tiorvcnium L., Fl. Gra?c., t. • , r> 



200., and our Jig. 1100.," is a native of the Levant, 1 lOd 



and is common on the road sides near Corinth, 

 where it forms a little bush about the height of 

 1^ ft., producing its fine rose-coloured flowers in 



10<)9 



June and July. It was introduced in 1806, and 

 is occasionally met with in collections. It is suit- 

 able for rockwork. 



a. C. Cnforiim L., Fl. Graic, t. COO., and our 

 Jig. 10!'9., is a native of Spain, Crete, ^c, with a 

 shrubby-branched stem, and the whole plant covered with soft silvery down. It was introduced in 

 ](i40,-, grow.s to the height of 2 ft. or .3 ft. ; and produces its white and pale red flowers from May to 

 •*<eptemi)er. It is about as hardy as Cnp?>rum triciicciim (see p. 560.). 



