DOU 



[ 340 ] 



DBA 



plant. Seeds ; peat and loam ; should be used 

 as an Alpine plant, and protected in winter; it 

 will not bear sudden changes. 

 D. niva'lis (snowy). 5. Purple. June. Rocky 

 Mountains. 1827- 



DOTE FLOWER. Peristc'ria. 



DRA'BA. (From drabc, acrid; refer- 

 ring to one of the universal characters 

 of its Nat. ord., Crucifers [Brassica- 

 ceae]. Linn., 15-Tetradynamia. Con- 

 nected but not in close alliance with 

 Aubretia, Alyssum, and Cochlearia.) 



Hardy rock or Alpine plants. Yellow-flowered, 

 except where otherwise mentioned. Perennials 

 by dividing the roots ; also with the annuals 

 and biennials by seeds in spring, and under a 

 hand-light in summer ; peat and loam for the 

 tenderest ; sandy loam and dry situation for 

 the hardiest. They make interesting pot-plants, 

 treated as Alpines, and that is the safest way to 

 treat many of them. 



ANNUALS. 



D. gra'cilis (slender). . June. North Ame- 

 rica. 1827. 



lu'tea (yellow). . June. South Europe. 



1820. 



mura'lis (wall). . White. June. England. 



nemora'lis (grove). 4. June. Europe. 1759. 



BIENNIALS. 



D, au'rea (golden). J. June. Denmark. 1820. 



cine'rea (grey). . White. July. Siberia. 



1818. 



confu'sa (confused). 3- White. July. North 



Europe. 



dau'rica (Daurian). . White. July. 



Dauria. 1824. 



inca'na (hoary), jj. White. May. Britain. 



HERBACEOUS PERENNIALS. 

 D. Aizni'des (Aizoon-like). $. March. Wales. 



.dizo'on (Aizoon). $. May. Carinthia. 1823. 



Alpi'na( Alpine), i- April. Lapland. 1820. 

 sili' culis-pilo' sis (hairy-podded), &. 



August. Greenland. 1820. 



a'spera (rough). June. Siberia. 



austri'aca (Austrian). . White. June. 



Austria. 1824. 



brachyste'rnon (short-stamened). . March. 



Switzerland. 1819. 



bruniaefu' tin (Brunia-leaved). i. June. 



Caucasus. 1820. 



bryoi'des (Bryum-like). . March. Tauria. 



1820. 



cilia'ris (hair-fringed-/ent>ed). . March. 



Switzerland. 1731. 



corymbo'sa (corymbed). 3. White. May. 



Baffin's Bay. 1823. 



crassifo'lia (thick-leaved). $. June. North 



America. 1826. 



cuspida'ta (spine-point-/eaerf). . March. 



Iberia, 1820. 



dasyca'rpa (hairy-fruited). White. May. 



Altai. 1837. 



enceefo'lia (Heath-leaved). &. June. Cau- 

 casus. 1821. 



fladnice'nsis (Fladniso). . White. June. 



Switzerland, is 19. 



D. glacia'lis (icy). . June. Siberia. 1826. 



Gmell'ni (Gmelin's). . June. Siberia. 



1823. 



grandiflo'ra (large-flowered). $. White. 



May. Altai. 1832. 



helve 1 tica (Swiss). . August. Switzerland. 



1819. 



hi'rta (hairy). 3. White. June. North 



Europe. 1823. 



inco'mpta (rough). . April. Caucasus. 1821. 



Lappo'nica (Lapland). . White. April. 



Lapland. 1810. 



lasioca'rpa (woolly - fruited). 3. White. 



May. 1820. 



murice'lla (small-prickly). . White. June. 



Lapland. 1810. 



niva'lis (snowy). ^. White. June. Swit- 



zerland. 1824. 



oblongu'ta (oblongate). . White. May. 



Baffin's Bay. 1823. 



pilo'sa (soft-haired). . White. June. 



Siberia. 1825. 



re'pem (creeping), . June. Siberia. 1818. 



ruspe'stris (rock). 3. June. Scotland. 



siliquo'sa (/arg-e-podded'i. 4> White. June. 



Caucasus. 1822. 



stella' ta (starry). . White. June. Pyrenees. 



1820. 



stylo! ris (^ong-styled). 



tomento'sa (woolly)- White. June. 



Switzerland. 181Q. 



tridenta'ta (three-toothed). 1. August. 



Russia. 1838. 



DRAG^NA. (From drakaina, a female 

 dragon ; because if this Dragon-tree is 

 wounded the milky juice on drying 

 becomes a hard gum, having the same 

 properties as the resinous substance 

 called Dragon's-blood. Nat. ord.. Llly- 

 ivorts [Liliacese]. Linn., ti-Hexandria 

 I-Monogynla.} 



Evergreens, with Avhite flowers, except D. 

 nutann. Large pieces of the branches strike 

 when put in strong bottom-heat ; rich fibry 

 loam, well drained. Summer temp., 60 to 80; 

 winter, 48 to 55. 



GREENHOUSE. 



D. nodo'sa (knotted). 4. 1820. 



nu'tans (nodding). 4. Brown. July. New 



Holland. 1820. 



undula'ta (waved). 6. Cape of Good Hope. 



1816. 



STOVK. 



D. arbo'rea (tree). 30. May. Sierra Leone. 

 1800. 



Brasilie'nsis (Brazilian). 6. Brazil. 1825. 



ce'rnua (drooping). 10. May. Mauritius. 



Dra'co (Dragon. Common). 10. East Indies. 



1640. 



ensifo'lia (sword-leaved). 4. 1800. 



fe'rrea (iron). 8. April. China. 1771. 



fro.' grails (sweet-scented). 6. April. Africa. 



1?68. 



interru'pta (interrupted). 2. June. Sierra 



Leone. 1798. 



Leone'nsis (Sierra Leone). 3. June. Sierra 



Leone. 1824. 



