1264 -
ARBORETUM AND FRUTICETUM.
PART 111.
CHAP. LXXX.
OF THE HALF-HARDY LIGNEOUS OR SUFFRUTICOSE PLANTSBELONGING TO THE ORDER COBtE^' CEM.
Cobce'&scdndens Cav. Icon. Rar. 1. p. 11.1.16., N. Du Ham., 4.t. 50., and oiir^g. 1098., is a tendriled climber, well known forthe rapidity of its growth, the fine glaucous green of its smoothleaves and shoots, and the beauty of its large, solitary, axillary,nodding flowers, with bell-shaped violet or purple corollas, andits large, oval, pendent fruit. Plants should either be raised inautumn, and preserved in apit, and turned out in spring (whichis the general practice about London ), or they may be sown inspring, and brought forward in a hot-bed. In mild winters,plants, in dry soil, against a conservative wall, maybe preservedalive by covering them with mats. A plant of Cobce'rr scandensagainst the veranda at the Castle Inn at Slough, in 1806, is saidto have extended its shoots upwards of 100 ft., on each side ofthe root, in one season. Astonishing effects might be producedby this plant in a single season, if it were thought desirable toincur a little extra expense. By preparing a large mass of turfyloam well enriched with leaf mould, or thoroughly decomposedmanure, and by mixing this mass with a quantity of small sand-stones, as recommended byMr.M‘Nab for the culture of thegenusErica, a large fund of nourishment would be produced. Now,in order that this nourishment might be rapidly imbibed by theroots, it would be necessary to supply it with bottom heat earlyin the season, and with liquid manure from a surroundingtrench, three parts filled with that material, during the wholesummer. A plant so treated would cover several thousandsquare 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 BELONGINGTO THE ORDER CONVOLVULA'CE^.
There area few species of Convolvulus which are technically considered shrubby; and, thoughfor all practical purposes they may be treated as herbaceous plants, we shall, for the sake of thosewho wish to gather every thing into an arboretum that can be included in it, here notice two orthree species.
- 2 k Convdlvulus 'Dorycnium L., FI. Grac., t.
200., and our fig. 1100., is a native of the Levant, 1100
and is common on the road sides near Corinth,where it forms a little bush about the height ofl^ft., producing its fine rose-coloured flowers in
1099
June and July. It was introduced in 1806, and
is occasionally met with in collections. It is suit- \VT < ? i'ia
able for rockwork. W ;|IH
it C. CttebrumL., FI, Grac., t. 200., and our (1 \k/ .LV'iM/
Jig. 1099., is a native of Spain , Crete , &c., with a ^ 1 » ~ v ---
shrubby-branched stem, and the whole plaat covered with soft silvery down. It was introduced in1640.; grows to the height of 2 ft. or 3 ft.; and produces its white and pale red flowers from May toSeptember. It is about as hardy as Cnebrum tricoccum (see p. 560.).