ATH 



[87] 



ATP, 



Greenhouse evergreen shrub. Cuttings of half 

 ripened wood in sand, under a bell-glass; loam 

 and peat. Winter temp., 40 to 45. 

 A. inna'na (mouldy-looking). Slate. Swan River. 



ATHAIJA SPINAUUM. The Turnip Saw- 

 fly. "The grub of this insect known 

 as the Black Caterpillar, Black Canker. 

 Black Palmer, Negro, and Nigger, or 

 Black Grub sometimes destroys thou- 

 sands of acres of our turnips. Its body 

 is cylindrical, as thick as a crow-quill, 

 about half an inch long, greenish-black, 

 with a darker line down the back ; then 

 a line of dull, yellowish-grey, and a third 

 of dark slate. Underneath, the body is 

 paler; it is wrinkled, and the head is 

 black. When alarmed, this grub curls 

 itself together in a somewhat spiral form. 

 They feed on the leaf of the turnip, 

 leaving nothing but its largest ribs, from 

 the middle of August until about the 

 same period of October. They never 

 attack the Swedish turnip. "When full 

 grown, the grubs bury themselves just 

 below the surface of the earth, each 

 forming a small, oval cocoon of earth, 

 formed into a paste with a gummy mois- 

 ture from its mouth. It remains in the 

 chrysalis state until July, when the per- 

 fect insect, or Turnip Saw-fly, comes 

 forth. Our drawing represents it magni- 1 

 fwd, the natural size being shown by the i 

 cross lines. It is the Athalia centifoHte \ 

 of some, and A. spinarum of other na- 

 turalists. Its colour is bright orange, 

 head black, upper lip pale yellow, anten- 

 iite black, thorax has two large dark spots, 

 and other dark marks are about the body 

 and wings. On small plots of turnips 

 the black grub may be easily removed by 

 hand-picking, and from larger breadths 

 by turning upon, them some broods of 

 ducks." (Cottage Gardener, hi. 149.) 



ATHEROPO'GON. (From ather, an awn, 

 and porjon, a beard ; in reference to its 



bearded awns. Nat. crd., Grasses [Gra- 

 minaceae]. Linn., %'3-Poli/ffanfia 1-Mo- 

 ncecia. Allied to Chloris.) 



A hardy perennial grass 5 seeds and division ; 

 common soil. 



A. aphidoi'des (aphida-like). f. Apetal. August. 

 South Europe. J76&. 



ATHEROSPE'RMA. (From ather, an awn, 

 and sperma, seed; seeds awned. Nat. 

 ord., Plum-Nutmegs [Atherospermacese]. 

 Linn., 21-Monoccia 8-Icosandria.) 



This beautiful New-Holland tree attains the 

 great height of 150 feet, and has the aspect of a 

 stately conifer, with a girth of 6 to 7 feet. The 

 colonists make a pleasant tea- beverage from the 

 bark, either dried or in a green state. " Its 

 effects are, however, slightly aperient." Back- 

 house. Greenhouse evergreen tree ; cuttings ; 

 "oam and peat, Winter temp., 40 to 50. 

 A. moscha't-t (musk). White. June. N. Hol- 

 land. 1824. 



ATIIRI'XIA. (From a, not, and thrix, a 

 lair; the receptacle being destitute of 

 lairs. Nat. ord., Composites [Asteracese]. 

 Linn., Iti-Syngenesia, 2-SuperJlua. Allied 

 to Leyssera.) 



Greenhouse evergreen ehrub; cuttings of rather 



young wood, under a bell-glass, in sandy soil ; 



lumpy loam and peat. Winter temp., 40 to 45. 



A. Cape'nsis (Cape). 3. Red. ApriL Cape of 



Good Hope. 1821. 



ATMOSPHERE. See AIR. 



ATRA'GENE. (From at/iron, pressed, 

 and yenos, birth ; in reference to the man- 

 ner in which the branches clasp their 

 supports. First applied by Thebphrastus 

 to our Traveller's Joy Cle'matis vita'lba, 

 Nat. ord., Crowfoots [Ranunculaceae], 

 Linn., 13-Polyandria 6-Polyyynia.) 



Hardy deciduous climbers; seeds when pro- 

 curable ; sown in a cold pit, and pricked off into 

 other pots as soon as up ; layers in summer and 

 autumn ; cuttings in spring and summer, under 

 a hand-light ; common soil. 

 A. America'na (American). 15. Purple. June. 

 N. Amer. 1/97- 



obli'qua (.unequal-sided). 15. Purple. 



June. N. Amer. 1797. 



Austri'aca (Austrian). 8. Brown, yellow. 



July. Austria. 1792. 



macrope'tala (large-petaled). Russia. 1831. 



occidenta'lis (western). JO. July. 1818. 



Ochote'nsis (Ochotsk). 12. White. June. Si- 



beria. 1818. 



Sibi'rica (Siberian). 12. Whitish -yellow. July. 



Siberia. 1753. 



A'TRIPLEX. Orach, or Arach. (From 

 ater, black, and plexus, woven together ; 

 on account of the dark colour and habit 

 of some of the species. Nat. ord., Cheno- 

 pods [Chenopodiacese], Linn., 23-Poiy- 

 gamia l-Moncccia.) 



A. hn'Umus is a hardy evergreen shrub, rather 

 ornamental, and A.portuianoi'desis a hardy under- 

 shrub ; but the species most deserving notice if. 



