ALT 



[29] 



ALT 



A. Caracasa'na (Caraccas). 1. White. July. 

 Caraccas. 1819. 



denticula'ta (finely-toothed-leaved). White. 



July. 1822. 



filifo'rmis (thread-shaped). White. July. 



East Indies. 



fruWscens (frutescent) . 1. White. July. 



Peru. 1820. This will do in a green- 

 house. 



nodijio'ra (knot-flowered). White. May. 



New Holland. 1826. 



polygono' ides (polygonum-like). 1. White. 



July. America. 1731. 



procu'mbens (procumbent). 4. White. July. 



Brazil. 1818. 



seri'cea (silky). 2. White. July. Quito. 



1820. 



scfssilis (sessile). |. July. Brown. East 



Indies. 1778. A biennial. 



spino'sa (spinous). Yellow. June. 1823. 



Stove Annual. 



ALTHJE'A. Mallow. (From altheo, to 

 cure, in reference to the medicinal quali- 

 ties. Nat. ord., Mallowworts [Malvaceae]. 

 Linn. Sys., \Q-Monadelphia 8-polyan- 

 dria}i The biennials and annuals sow 

 in spring. The herbaceous, dividing the 

 roots, or seeds, which, if sown as soon as 

 ripe, produce flowering plants next year. 

 A. rosea is the Hollyhock. 



HARDY ANNUALS. 



A. rtcaM'fe(stemless). 2. Purple. July. Aleppo. 

 1680. 



hirsu'ta (hairy). 2. White. July. Britain. 



Ludwi'gii (Ludwig's). 2. Pink. July. Sicily. 



1791. 



sineTnsis (China), 1. Red. July. China. 



1818. 



HARDY BIENNIALS. 



A. caribce'a (caribean). 3. Pink, Stove. April. 

 West Indies. 1816. 



ficifo'lia (fig-leaved). 6. Orange. July. 



Levant. 1597. 



Frolovia'na (Frolove's). 3. July. Siberia. 



1827. 



pa' llida (pale-flowered). 6. Pale red. July. 



Hungary. 1805. 



ro'sea (the hollyhock). Red. August, China. 



1573. 

 bilo'ba (two-lobed H.). 8. Red. July. 



Siebefri (Sieber's). 4. Purple. July. Sicily. 



1829. 



stria' ta (striated). 5. White. July. 



HARDY HERBACEOUS. 

 A. cannabi'na (hemp-leaved). 6. Purple. July. 



South of Europe. 1597. 

 flexuo'sa (flexous). 3. Pink. July. East 



Indies. 1803. 



harbonc'nsis (Narbonne). 6. Pink. August. 



South of Europe. 1780. 



nudiflo'ra (naked-flowered). 6. White. July. 



Siberia. 1827. 



officina'lis (officinal. Marsh-mallow). 4. 



Flesh. July. Britain. 



taurinefnsis (Turin). 4. Red August. 



Turin. 1817. 



ALTINGIA. (In honour of Alting, a 

 Grerman botanist. Nat. ord., Conifers 

 Tinaceae]. Linn. Sys., 22-2)uecia 13- 

 monadelphia.] Greenhouse evergreens. 

 Allied to AURAUCARIA. Deep loamy soil. 

 The best plants are from seeds, although 

 ;hey may be raised from cuttings of the 

 ialf-ripened wood, under a bell-glass, 

 in a cold frame. 

 A. Cunningha'mi (Cunningham's). 30. Apetal. 



New Holland. 1824. 

 exce'lsa (tall). 100. Apetal. Norfolk Island. 



1796. 



ALTITUDE, or elevation above the sea, 

 has a great influence over vegetation. 

 The greater the altitude the greater 

 the reduction of temperature ; so much 

 so that every 600 feet of altitude are 

 believed to reduce the annual tem- 

 perature as much as receding a degree 

 from the equator, either to the north or 

 to the south. But this rule is far from 

 universally applicable ; for the limit of 

 perpetual snow at the equator is at the 

 height of 15,000 feet, whereas, in the 

 35th degree of north latitude, the limit is 

 at 11,000 feet, being an average of about 

 120 feet of altitude for every degree of 

 recession from the equator. In the 45th 

 degree, the limit is 8,400 feet, being an 

 average of 146 feet for every degree ; in 

 the 50th degree, 6,000 feet, or 180 feet 

 for each degree ; in the 60th, 3,000 feet, 

 or 200 feet for a degree ; and in the 70th, 

 from 1,200 to 2,000 feet, or about the 

 same for each degree as to the 60th de- 

 gree of latitude. Now we know of no 

 reason why the temperature of elevations 

 below the snow-line should not follow the 

 same gradations ; and if this be so, these 

 may be taken as a rule. All plants 

 growing above 7,000 feet under the equa- 

 tor, ought to grow in the open air, in the 

 latitude of London. In general, good 

 vegetation is produced at the same dis- 

 tance from the snow line in the same 

 latitudes. 



ALUMINOUS, applied to land, means 

 heavy, owing to the presence of clay. 



ALYSSUM. Madwort. (From a, not, 

 and lyssa, rage, in reference to a fable 

 that the plant allayed anger. Nat. ord., 

 Crucifers [Brassicaceae]. Linn. Sys., 

 \5-Tetradynamia). Seeds, cuttings, and 

 root divisions ; common soil. Mostly 

 yellow-flowered and hardy. The best 



