GROUND CHERRY. 



134 



GUM CISTUS. 



constructed of rock-wovk, or of brick 

 or stone, covered internally with spar 

 or other curious stones, and sometimes 

 ornamented with marine productions, 

 such as corals, madrepores, or shells. 

 A kind of grotto is also constructed of 

 roots ornamented with moss. Per- 

 haps the most generally effective 

 grotto is one formed with blocks of 

 stone, without ornaments either ex- 

 ternally or internally, with the floor 

 paved with pebbles, and with a large 

 long stone, or a wooden bench painted 

 to imitate stone, as a seat. The roof 

 should be rendered waterproof by 

 means of cement, and covered with 

 ivy ; or a mass of earth may be heaped 

 over it, and planted with periwinkle, 

 ivy, or other low-growing evergreen 

 shrubs, which may be trained to hang 

 down over the mouth of the grotto. 

 In some cases it answers to cover 

 grottoes with turf, so that when seen 

 from behind they appear like a knoll 

 of earth, and in front like the entrance 

 into a natural cave. As, grottoes are 

 generally damp at most seasons of the 

 year, they are more objects of orna- 

 ment or curiosity than useful as seats 

 or places of repose. One of the 

 finest grottoes in England is that at 

 Pain's Hill, formed of blocks of stone, 

 with stalactite incrustations hanging 

 from the roof, and a small stream 

 running across the floor. Pope's grotto 

 at Twickenham ; the grotto at Wey- 

 bridge, and that at Wimbourne St. 

 Giles, which last cost 10,000/., are 

 also celebrated. A fountain or a 

 gushing stream is a very appropri- 

 ate ornament to a grotto ; though, 

 where practicable, it is better in an 

 adjoining cave, when a person sitting 

 in the grotto can hear the murmur of 

 the water, and see the light reflected 

 on it at a distance, than in the grotto 

 itself. 



Ground Chkrry. — Cerasus Cha- 

 mcecerasus. 



Ground Ivy. — See Glechoma. 



Groundsel. — Senecio vulgaris. — 

 I mention this troublesome weed, to 

 enforce on amateur gardeners the 

 necessity of pulling it up as soon as it 

 appears, without suffering it to open 

 its flowers, lest it should ripen any of 

 its seed. The plant belongs to the 

 Composita?, and the seeds are each fur- 

 nished with a feathery wing or pap- 

 pus, by means of which they are 

 distributed in all directions. 



Groundsel-tree. — Bdccharis ha- 

 limifdlius. A shrub with blueish 

 green leaves, and rather pretty flowers, 

 which are produced in autumn. It 

 will grow in any common garden soil, 

 but it is killed in severe winters if in 

 an exposed situation. It may be pro- 

 pagated by cuttings, which will strike 

 if planted in the open border in 

 autumn ; or by layers. 



Gu.uacum. — Zygophyllece. — Lig- 

 num-vitse tree. Hothouse trees which 

 are grown in loam and peat, and pro- 

 pagated by cuttings. When trans- 

 planted, great care should be taken 

 not to injure the roots, which are 

 small and very brittle. 



GuaVa. — See Psidium. 



Guelder Rose. — See Viburnum. 



Guernsey Lily.- — Nerine sarni- 

 ensis, Ker. — See Neri v ne v . 



Gypsoca'llis, Sal. — Ericacece. — 

 The moor, or Cornish heath, sepa- 

 rated from the genus Erica by Salis- 

 bury. For culture, see Erica. 



Gypso'phila. — Carophyllacece, or 

 Silenacece. — Small-flowered creeping 

 or trailing plants, annuals and peren- 

 nials, which require a calcareous soil, 

 and are well adapted for rockwork. 



Gypsum. — Sulphate of lime, com- 

 monly called plaster of Paris. 



Gum Arabic Tree. — Acacia vera, 

 or Ardbica. — See Acacia. 



Gum Cistus. — Cistus Cyprius, 

 or ladaniferus. See Ci'stus. 



