ACA 



[5] 



ACA 



A. *vert.iciUrt ta (whorl-leaved). 10. Yellow. 

 April. Van Diemen's Land. 1780. 



angu'sta (narrow-leaved) . 10. Yel- 

 low. April. New Holland. 1780. 



latift/lia (broad-leaved). 10. Yel- 

 low. April. New Holland. 1780. 



vesti'ta (clothed). 6. Yellow. June. New 



Holland. 1820. 



vimiiia'lis (twiggy). Yellow. April. New 



Holland. 1820. 



virga'ta (branchv). 4. Yellow. May. 



New Holland. 1824. 



viridira'mis (green-branched). 4. Yellow. 



Cape of Good Hope. 1816. 



vomerifo' rmis (plough-share shaped). Yel- 



low. April. New Holland. 1818. 

 HALF-HARDY SPECIES. 



A.julibri'ssia (silk-tree). 20. White. August. 



Levant. 1745. 



ACANTHOPHI'PPIUM. (From acmthos, a 

 thorn, and ippi-on, a horse, but why is 

 not apparent. Nat. ord., Orchids [Orchid- 

 aceoe]. Linn. Sys., 20-Gynandria l-mon- 

 andria}. Loam and peat in a rough state ; 

 division or pseudo bulbs ; 50 to 60 

 when at rest ; 70 to 80 when growing. 

 A. bi' color (two-coloured). Yellow and red. 



June. Ceylon. 1833. 

 java'nicum (Javanese) . Crimson rose. August 



Java. 1844. 



stria' turn (striped-flowered). White-striped. 



June. Nepaul. 



sylhete'nse (sylhet). White. June. Sylhet. 



1837. 



ACANTHOSTA'CHYS. (Acanthos, a spine, 

 stachys, a spike. Nat. ord., Bromeliads 

 [Bromeliacese]. Linn. Sys., -Hexandria, 

 \-monogynid). Stove herbaceous plant. 

 Suckers ; equal parts of sand, leaf mould 

 and decayed wood. 



A. strobila'cea (cone-fruited). Red and Yel- 

 low. June. Brazil. 1840. 



ACA'NTHUS. Bear's Breech. (Acanthos, 

 a spine ; some being prickly. Nat. ord., 

 Acanthads [Acanthaceae]. Linn. Sys., 14- 

 Didynamia, 1-angiospermia.} Herbaceous 

 plants. Seeds and root division ; light 

 rich garden soil. 



HARDY SPECIES. 



A. hispa'nicus (Spanish). 2. White. August. 

 Spain. 1700. 



mofllis (soft). 3. White. August. Italy, 1548. 



The leaves of this are said to have 

 given rise to the Corinthian style in 

 architecture. 



ni'ger (black). 3. White. August. Portu- 



gal. 1759. 



spinosi' ssimus (most spiny). 3. White. 



August. South of Europe. 1629 



spinofsus^ (spiny). 3. White. August. 



GREENHOUSE SPECIES. 



carduifo'lius (thistle-leaved). 1. Blue 



August. Cape of Good Hope. 1816. 



A'CARUS. The Mite. Those most fre- 

 quent in our gardens are the following : 

 A. tetta'rius. The Red Spider. This 

 is one of the gardener's greatest pests, 



NATtKAL SIZE, AND MAGNIFIED. 



though so small as to be scarcely visible 

 to the naked eye ; yet when a plant is 

 much infested by them it has the appear- 

 ance of being scorched. Coloiir some- 

 times yellowish, at others brown, but 

 oftener a dull red ; on each side of its 

 back is a blackish spot. In November 

 it may be found under the bark of the 

 lime-tree ; but at all times it is to be 

 found in greenhouses and hothouses that 

 have been kept too hot and dry. In the 

 summer time it may be found, occa- 

 sionally in myriads, upon the under 

 sides of the leaves of kidney-beans and 

 limes; even the apple, pear, and plum 

 suffer much from its ravages, as well as 

 various in-door plants. The injury they 

 occasion by sucking chiefly the elabo- 

 rated sap, and by their webs embarrass- 

 ing the breathing of the plant through 

 the pores of its leaves, is told by the 

 brown colour which these assume. To 

 destroy these insects in the greenhouse, 

 or hothouse, or cucumber-frame for 

 they attack this plant also there is no 

 plan so effectual as heating the hot- water 

 pipes of the houses, or having hot- water 

 plates, filled with boiling water, placed 

 in the frames, sprinkling upon them 

 flowers of sulphur, which begin to va- 

 porize at a heat of 170, and then shut- 

 ting up the houses or frames. The 



