Am.  Jour.  Ptaarm.  > 
March,  1906.  / 
London  Botanic  Gardens. 
117 
nalis,  L.,  or  Lungwort,  whose  leaves,  still  retained  in  the  Codex,  are  a  relic  of 
the  old  doctrine  of  signatures  ;  Quercus  pedunculata,  Bhrh.,  and  Q.  Suber,  L. ; 
Rhamnus  catharticus,  L. ;  Rheum  officinale,  Baill.,  and  R.  palmatum,  L.,  var. 
tanguticum,  sources  of  Chinese  Rhubarb  ;  Rosmarinus  officinalis,  L.,  or  Rose- 
mary ;  Ruta  graveolens,  L-,  or  Rue  ;  Rubia  tinctorum,  L.,  Madder  ;  Sambucus 
nigra,  L-;  Sctnguinaria  Canadensis,  L  ;  Solanum  Dulcamara,  L.  ;  Tanacetum 
vulgare,  L.  ;  Taraxacum  officinale,  Weber  ;  Trigonella  Fcenum-grcecum,  L., 
or  Fenugreek;  Tussilago  Farfara,  L.;  Valeriana  officinalis,  L. ;  Veratrum 
viride,  Solaud.;  and  Verbascum  Thapsus,  L.,  or  Mullein. 
The  range  of  Economic  Houses  was  first  erected  in  1873,  under 
the  secretaryship  of  Mr.  W.  Sowerby.  It  was  entirely  rebuilt  last 
year  (1904),  and  although  several  plants  were  lost  owing  to'the  severe 
weather  that  occurred  while  the  work  was  being  proceeded  with 
these  are  being  rapidly  replaced.  The  following  is  a  list  of  some  of 
the  more  interesting  plants,  from  the  pharmacist's  point  of  view, 
growing  in  these  houses  at  the  present  time ;  they  are  being  added 
to  every  day,  and  the  collection,  which  is  already  the  most  complete 
one  of  living  exotic  economic  plants  in  London,  will  be,  before  long, 
a  thoroughly  representative  one  : — 
Aloe  vera,  L.,  and  other  species  of  Aloe  ;  Areca  Catechu,  L. ;  Balsamodendron 
Myrrha,  Nees  ;  Bixa  Orellana,  L.;  Ccssalpinia  Sappan,  L.,  whose  heart-wood 
is  official  in  the  Colonial  and  Indian  Addendum  of  the  British  Pharmacopoeia, 
under  the  name  of  "Sappan;"  Canella  alba,  Murr.;  Castilloa  elastica,  Cerv., 
source  of  Central  American  rubber  ;  Chondodendron  tomentosum,  R.  &  P.,  the 
source  of  true  Pareira  Brava;  Cinchona  officinalis,  L.,  and  other  Cinchonas 
yielding  medicinal  barks  ;  Cinnamonum  Camphora,  Nees  ;  Convolvulus 'Stam- 
monia,  L.,  source  of  Scammony  root,  Scammony,  and  Scammony  resin  ;  Croton 
Eluteria,  Benn.,  from  which  Cascarilla  bark  is  obtained,  and  C.  Tiglium,  L. ; 
Curcuma  longa,  L.;  Dipteiyx  odorata,  Willd.,  the  plant  which  yields  Tonka 
beans  ;  Drymis  Winteri,  Forst.,  the  source  of  true  Winter's  bark  ;  Eucalyptus 
globulus,  Labill.,  and  other  species  of  Eucalyptus ;  Euphorbia  resiniferat 
Berg;  Ficus  elastica,  Roxb.,  from  which  Bast  Indian  rubber  is  obtained;  Gos- 
sypium  herb  ace  um,  L.,  and  other  species  of  Gossypium  ;  Gynocardia  odorata, 
R.  Br.,  formerly  supposed  to  be  the  source  of  Chaulmoogra  seeds  and  oil  ; 
Hevea  Braziliensis,  Muell.,  from  which  Para  rubber  is  obtained  ;  Illicium 
verum,  Hook.  f. ;  Landolphia  gummifera,  Lam.,  the  source  of  Madagascar 
rubber;  Musa  sapientum,  L.,  and  var.  Paradisiaca ;  Nicotiana  Tabacum,  L.; 
Nopalea  coccinellifera,  Salm-Dyck  ;  Opoponax  Chironium,  Koch. ;  Peumus 
Boldus,  Molina  ;  Piper  an^ustifolium,  L-,  P.  Betle,  L.,  P.  Cubeba,  L.,  and  P. 
longum,  L.;  Pogostemon  Patchouli,  Pellet.,  the  essential  oil  of  which  is  used 
in  perfumery  ;  Ricinus  communis^  L.,  Santalum  album,  L.;  Smilax  officinalis, 
Kunth,  the  reputed  source  of  Caracas  Sarsaparilla  ;  Strychnos  Nux-vomica,  L.; 
Styrax  Benzoin,  Dry.;  Terminalia  sp,,  yielding  Myrabolans;  and  Urginea 
maritima,  Baker. 
