DUV 



C 348 ] 



EAR 



DUVA'LIA. Applied by Haworth to a 

 section of Stapelia, but the name was 

 pre-occupied by Nees von Esenbeck 

 for a genus of Liverworts, of which 110 

 account is taken in this work. The 

 species will be found under Stapelia. 



DUVAU'A (After Duvau, a French bo- 

 tanist. Nat. ord., Terebinths or Ana- 

 cards [Anacardiacese]. Linn., 21-Mo- 

 ncecla 1 -Octandrla. Allied to Schinus.) 



Fine evergreens, requiring greenhouse pro- 

 tection north of London. 



D. denta'ta (toothed). 20. 



Owyhee. 1/95. 

 depe'ndens (hanging). 2 



1/90. 



White. June. 

 White. Chili. 

 0. Yellowish. 



latifo'lia (broad -leaved). 



June. Chili. 1830. 



longifo'lia (long-leaved). 3. Pale yellow. 



June. Buenos Ayres. 1835. 



ova'ta (egg-leaved). 6. Greenish. Chili. 



1824. 



DWARF FAN-PALM. Chamce'rops hu' mi- 

 lls. 



DWAKF STANDARD is a fruit-tree on a 

 very short stem, with its branches un- 

 trained. 



DY'CKIA. (Named in honour of 

 Prince Salm-Dyck, a German author 

 of a splendid work on succulents. 

 Nat. ord., Bromelworts [Bromeliacese]. 

 Linn., Q-Hcxandrla 3-Tryginia. Allied 

 in appearance to a small Pitcairnia.) 



Like a pine-apple plant in miniature ; usually 

 grown with small greenhouse succulents. Suck- 

 ers; loam and peat, with lime rubbish, and 

 well drained. Summer temp., 56 to 75; 

 winter, 38 to 45. 



D. alli'ssima (tallest). Orange. September. 

 Buenos Ayres. 



variflo'ra (scattered-flowered). 2. Orange. 



June. Brazil. 1832. 



DYER'S GREEN-WEED. Genista tlnc- 

 to'ria. 



DYSOPHY'LLA. (From dysodes, fetid, 

 and phyllon, a leaf; referring to the 

 strong peppermint-like smell of the 

 leaves. Nat. ord., Lipivorts or Labiates 

 [Lamiacese]. Linn., l^-Dt/dynamia 1- 

 Gymnospermia. Allied to Mint.) 



Division of the roots just as fresh growth is 

 commencing in spring ; common sandy soil. 

 D. pu'mila (dwarf). . Purple. August. Ne- 

 paul. 1826. Hardy herbaceous. 



quadrifo'lia (four-leaved). 2. Purple. July. 



Nepaul. 1820. Greenhouse evergreen. 



stella'ta (starry-cowered). 1. Purple. India. 



1816. Greenhouse herbaceous . 

 verticilla'ta (whorled). Lilac. Nepaul, 1828. 

 Greenhouse herbaceous. 



E, 



EARI'NA. (From earinos, the spring, 

 the time of their blooming. Nat. ord., 

 Orchids [Orchidacese]. Linn., 2Q-Gy- 

 nandrla \-Monandrlu. Allied to Pho- 

 lidota.) 



Stove orchids, from New Zealand. Division 

 of the plants when fresh growth is commencing ; 

 sphagnum moss and fibry peat, in which the 

 roots are fixed above the surface of a pot, or in 

 a shallow basket, and suspended from the roof. 

 Summer temp., 60 to 85, with moisture; win- 

 ter, 50 to 60, and rather dry. 

 E. mucrona'ta (sharp-pointed). White. May. 



1845. 

 suave'olens (sweet-scented); White. May. 



1843. 



EARTH. Every cultivated soil is 

 mainly composed of four earths in va- 

 rious proportions : Silica, or pure 

 flint; Alumina, or pure clay; Lime, 

 combined with carbonic acid in the 

 state of chalk ; and Magnesia. See 

 Soil. 



EARTHING-UP, or drawing the soil in 

 a ridge to the stems of plants, is bene- 

 ficial to fibrous-rooted plants, by re- 

 ducing the distance from the surface 

 of the extremities of the plant's roots ; 

 by inducing the production of rootlets 

 from the stem ; and sheltering the 

 winter standing crops, for the closer 

 the leaves of these are to the earth the 

 less is the reduction of heat from the 

 latter, either by radiation or contact 

 with the colder air. But to tuberous- 

 rooted plants, as the potato, it is de- 

 trimental. In our experiments, it has, 

 on an average, reduced the produce 

 one-fourth. 



EARTH-NUT. A'rachis. 



EARWIG. Forft'cula auricula' ris. This 

 destroyer of the peach, apricot, plum, 

 dahlia, pink, and carnation, commits 

 its ravages only at night, retiring 

 during the day to any convenient 

 shelter in the vicinity of its prey. Ad- 

 vantage must be taken of this habit, 

 and if small garden pots with a little 

 moss within be inverted upon a stick, 

 and pieces of the dry hollow stem of 

 the sunflower, or Jerusalem artichoke, 

 be placed in the neighbourhood of the 

 fruits and flowers enumerated, many 

 of the insects will resort thither, and 

 may be shaken out and destroyed. As 



