VOY 



C 916 ] 



WAL 



F. vo'sea (rosy). Red. July, Guiana, 1822. 



imiflo'ra (one-flowered). Yellow. June. 



West Indies. 1824. 



VRIE'SIA. ( Named after Dr. de Vriese, 

 a Dutch botanist. Nat. ord., Bromcl- 

 worls [Bromeliacese]. Linn., 6- Hex- 

 andria \-Monogynia. Allied to Pit- 

 cairnia.) 



Stove evergreens ; for culture see Pitcairnia. 

 V. glaucophy'lla (milky -green- leaved). 1$. 

 Purple, white. September. Sta Martha. 

 1847. 



psittaci'na (Parrot-like-Jlowered). 2. Scarlet. 



July. Rio Janeiro. 1826. 



specio'sa (showy). 14. White. March. 1847. 



W. 



WACHENDO'RFIA. (Named after E. 

 J. Wachendorf, a Dutch botanist. Nat. 

 ord., Lilyworts [Liliacese]. Linn., :'- 

 Triandria \-MonogyniaS) 



Greenhouse, Cape of Good Hope, bulbs; 

 yellow-flowered, except where otherwise men- 

 tioned, and requiring the same treatment as 

 the larger Ixias. They bloom in April. 

 W. brevifo'lia (short-leaved). 1. Purple. i;p5. 



Breynia'na (Breynin's). 1. 1825. 



grami'nea (Grass-leaved)* 1 . 



Hibbe'rtii (Hibbert's). 2. 1823. 



hirsu'ta (hairy), l. Violet. 1687. 



panicula'ta (panicled). 2. 1700. 



tene'lla (tender), i. 1816. 



thyrsiflo'ru (thyrse-flowered). 2. May. 1759. 

 WAHLENBE'RGIA. (Named after Dr. 



Wahlenberg, author of "Flora Lappo- 

 nica." Nat. ord., Bellworts [Campanu- 

 lacee]. Linn., ft-Pentandria l-Mono- 

 gynia.) 



All are blue-flowered, except when otherwise 

 mentioned. Seeds, under a glass in the begin- 

 ning of April, and planted out in the end of 

 May; division of perennials, and cuttings of 

 the young shoots in the beginning of summer, 

 under a handlight ; sandy peat and loam, and a 

 cool, moist situation. 



GEEENHOUSE ANNUALS, &C. 



W. capilla'ris (h&ii-leaved) . May. N. Holland. 

 1824. Biennial. 



ce'rnua (drooping). Blue, white. July. 



C. of G.Hope. 1804. Biennial. 



dehi'scens (gaping). White/ June. Bengal. 



1H18. 



gra'cilis (slender). April. N.S.Wales. 



1/94. Biennial. 



littora'lin (sea-shore). April. VanDiemen's 



Land. 1820. Biennial. 



HARDY PERENNIALS. 

 W. arva'tica (Arvatian). May. Spain. 1825. 



cupilla'cea (hair-like-feued). White. May. 



C. of G.Hope. 1822. 



grand iflo'ra (large - flowered).- 1. July. 



Siberia. 1782. 



W. Kitaibe'lii (Kitaibel's). Violet. June. 

 Hungary. 1823. 



re'pens (creeping). $. White. July. 1830. 



HARDY ANNUALS. 



W. Cape'nsis (Cape). July. 1819- 



diffu'sa (spreading). June. C. of G. Hope. 



1787- 



diversifo'lia (various-leaved). July. C. of 



G. Hope. 1822. 



fle'xiUs( bending). May. C. of G. Hope. 



1836. 



hispi'dula (bristly). Blue, white. June. 



C. of G.Hope. 1816. 



linea'ris (narrow -leaved). White. July. 



C. of G. Hope. 1822. 



lobelioi'des (Lobelia-like). Pale red. July. 



Madeira. 1777- 



nutabu'nda (much-drooping). White. July. 



Calabria. 1830. 



procu'mbens (lying-down). July. C. of G. 



Hope. 1824. 



WALDSTE'INIA. (Named after F. von 

 Waldstein, a German botanist. Nat, 

 ord., Eoseworts [Eosaceee]. Linn., 12- 

 Icosandria \-Monogynla. Allied to 

 Geum.) 



Hardy herbaceous perennial. For culture see 

 Geum. 



W, geoi'des (Avens-like). f. Yellow. June. 

 Hungary. 1804. 



WALKE'RA. (Named after Dr. B. 

 Walker, founder of the Cambridge bo- 

 tanic garden. Nat. ord., Ochnads [Och- 

 nacese]. Linn., f> Penlandria i-Mono- 

 gynia.) 



Stove, yellow-flowered evergreens. Cuttings 

 of half-ripened shoots, or firm side-shoots, in 

 sand, under a bell-glass, in the beginning of 

 April; sandy loam and peat. Winter temp., 

 50 to 60 ; summer, 60 to 85. 

 W. integrifo'lia (entire-leaved). 12. Guiana. 



serra'ta (ssw-leaved) , 12. Malabar. 1824. 



WALKS. See Concrete and Gravel. 



WALL CRESS. A'rabis. 



WALL-FLOWER. Chelra 'nth us. 



WALLS are usually built in pannels, 

 from fifteen to thirty feet in length, one 

 brick thick, with pillars at these specified 

 distances, for the sake of adding to their 

 strength, and the foundation a brick- 

 and-a-half thick. The plan of Mr. Sil- 

 verlock, of Chichester, is worthy of 

 adoption, since, if well constructed, it is 

 equally durable, and saves one-third of 

 the expense. Walls so constructed are 

 stated to become dry after rain much 

 more rapidly than a solid wall of the 

 same or any other thickness, and there 

 appears not a shadow of a reason why 

 they should not ripen fruit equally 

 well. He forms the wall hollow, nine 



