﻿OCTOBEK 
  1 
  TO 
  DECEMBEE 
  31, 
  1911. 
  33 
  

  

  32153 
  and 
  32154. 
  Convolvulus 
  spp. 
  Rose 
  -root. 
  

  

  From 
  Puerto 
  Orotava, 
  Teneriffe, 
  Canary 
  Islands. 
  Presented 
  by 
  Dr. 
  George 
  V. 
  

   Perez. 
  Received 
  November 
  23, 
  1911. 
  

   Seeds 
  of 
  the 
  following: 
  

  

  32153. 
  Convolvulus 
  floridus 
  L. 
  f. 
  Rose-root. 
  

   " 
  One 
  of 
  the 
  most 
  interesting 
  and 
  striking 
  plants 
  in 
  the 
  Canary 
  Islands 
  is 
  

  

  this 
  shrubby 
  Convolvulus, 
  known 
  locally 
  as 
  guadil. 
  This, 
  together 
  with 
  a 
  

   closely 
  allied 
  species, 
  C. 
  scoparius, 
  is 
  sometimes 
  known 
  as 
  rose-root 
  and 
  is 
  said 
  

   to 
  yield 
  oil 
  of 
  roses. 
  The 
  guadil 
  is, 
  however, 
  more 
  interesting 
  as 
  an 
  ornamental 
  

   flowering 
  shrub 
  than 
  for 
  any 
  economic 
  purposes 
  to 
  which 
  at 
  one 
  time 
  it 
  may 
  

   have 
  been 
  applied. 
  It 
  belongs 
  to 
  the 
  bindweed 
  order 
  (Convolvulaceae), 
  

   although 
  nothing 
  can 
  be 
  less 
  like 
  a 
  Convolvulus 
  in 
  habit, 
  and 
  is 
  one 
  of 
  the 
  

   comparatively 
  few 
  examples 
  of 
  this 
  order 
  (containing 
  the 
  jalap 
  plant, 
  the 
  sweet 
  

   potato, 
  the 
  scammony, 
  and 
  the 
  showy 
  ipomoeas), 
  possessing 
  an 
  upright 
  stem 
  

   and 
  a 
  treelike 
  habit. 
  It 
  may 
  be 
  described 
  as 
  a 
  compact 
  shrub 
  from 
  4 
  to 
  6 
  feet 
  

   in 
  height, 
  with 
  a 
  stout 
  woody 
  stem 
  and 
  numerous 
  branches. 
  The 
  branches, 
  

   especially 
  in 
  the 
  young 
  state, 
  are 
  white 
  powdered, 
  as 
  also 
  are 
  the 
  abundant 
  

   linear 
  undulate 
  leaves. 
  The 
  latter 
  are 
  about 
  3 
  or 
  4 
  inches 
  long, 
  attenuated 
  

   toward 
  the 
  petiole, 
  with 
  rounded 
  and 
  somewhat 
  emarginate 
  tips. 
  The 
  flowers 
  

   are 
  abundantly 
  produced 
  in 
  large 
  loose 
  terminal 
  panicles. 
  The 
  sepals 
  are 
  ovate 
  

   acuminate, 
  about 
  2 
  lines 
  long. 
  The 
  corolla 
  is 
  about 
  one-half 
  to 
  three-quarters 
  

   of 
  an 
  inch 
  in 
  diameter 
  and 
  pure 
  white. 
  The 
  capsule 
  is 
  conical 
  and 
  slightly 
  

   villose 
  at 
  the 
  apex. 
  When 
  in 
  flower 
  the 
  plant 
  appears 
  as 
  if 
  covered 
  with 
  newly 
  

   fallen 
  snow. 
  It 
  is 
  one 
  of 
  the 
  few 
  native 
  plants 
  which 
  awakens 
  the 
  enthusiasm 
  of 
  

   local 
  residents 
  of 
  Teneriffe. 
  According 
  to 
  Dr. 
  Perez 
  the 
  guadil 
  was 
  an 
  object 
  

   of 
  high 
  regard 
  by 
  the 
  Guanches, 
  the 
  aboriginal 
  race 
  of 
  the 
  island. 
  This 
  can 
  

   well 
  be 
  understood, 
  for 
  when 
  in 
  flower 
  it 
  is 
  one 
  of 
  the 
  brightest 
  and 
  most 
  attrac- 
  

   tive 
  objects 
  in 
  the 
  Teneriffe 
  landscape. 
  The 
  pale 
  powdered 
  green 
  of 
  the 
  leaves 
  

   forms 
  an 
  excellent 
  background 
  for 
  the 
  masses 
  of 
  pure 
  white 
  flowers. 
  The 
  only 
  

   pity 
  is 
  it 
  is 
  so 
  rarely 
  seen. 
  In 
  the 
  search 
  for 
  rose-roots 
  for 
  export 
  purposes 
  this 
  

   and 
  the 
  allied 
  species 
  have 
  been 
  nearly 
  exterminated 
  in 
  the 
  wild 
  state. 
  In 
  

   Teneriffe 
  it 
  grows 
  from 
  sea 
  level 
  up 
  to 
  elevations 
  of 
  about 
  1,000 
  feet. 
  It 
  evi- 
  

   dently 
  prefers 
  a 
  free 
  porous 
  soil 
  and 
  thrives 
  in 
  exposed 
  situations 
  on 
  rocks 
  and 
  

   slopes. 
  In 
  rich 
  soil 
  the 
  plant 
  appears 
  to 
  put 
  on 
  a 
  looser 
  habit 
  and 
  when 
  laden 
  

   with 
  flowers 
  the 
  panicles 
  become 
  almost 
  pendulous. 
  It 
  is 
  readily 
  increased 
  by 
  

   seed, 
  and 
  as 
  it 
  is 
  a 
  fast 
  grower 
  it 
  should 
  flower 
  in 
  the 
  second 
  or 
  third 
  year." 
  

   (Extract 
  from 
  D. 
  Morris, 
  Kew 
  Bulletin 
  of 
  Miscellaneous 
  Information, 
  1893, 
  

   pp. 
  183-1 
  34.) 
  

  

  32154. 
  Convolvulus 
  scoparius 
  L. 
  f. 
  Rose-root. 
  

   "This, 
  as 
  its 
  name 
  denotes, 
  is 
  a 
  Convolvulus 
  with 
  the 
  habit 
  of 
  the 
  common 
  

  

  broom. 
  It 
  is 
  an 
  erect 
  shrub 
  7 
  to 
  8 
  feet 
  high 
  with 
  a 
  few 
  long 
  narrow 
  branches 
  and 
  

   somewhat 
  short 
  linear 
  leaves. 
  The 
  flowers 
  are 
  produced 
  in 
  many 
  flowered 
  

   axillary 
  cymes. 
  The 
  corolla 
  is 
  slightly 
  plaited 
  with 
  a 
  5-partite 
  limb 
  ; 
  it 
  is 
  tinged 
  

   with 
  red 
  outside 
  and 
  white 
  within. 
  This 
  is 
  known 
  locally 
  as 
  Lena 
  Noel 
  or 
  Lena 
  

   Loel. 
  It 
  is 
  only 
  rarely 
  met 
  with; 
  Teneriffe 
  specimens 
  in 
  the 
  Kew 
  Herbarium 
  

   are 
  from 
  Guia 
  on 
  the 
  southwestern 
  slopes 
  of 
  the 
  island 
  and 
  from 
  Barranco 
  Santo. 
  

   It 
  is 
  said 
  to 
  be 
  more 
  common 
  at 
  Palma, 
  but 
  owing 
  to 
  the 
  excessive 
  digging 
  of 
  the 
  

   roots 
  many 
  years 
  ago 
  for 
  export 
  purposes 
  it 
  is 
  restricted 
  to 
  very 
  few 
  localities. 
  

  

  "There 
  is 
  a 
  single 
  specimen 
  of 
  the 
  root 
  of 
  Convolvulus 
  scoparius 
  in 
  the 
  Kew 
  

  

  Museum. 
  It 
  is 
  about 
  8 
  inches 
  long, 
  2\ 
  inches 
  wide, 
  and 
  1 
  inch 
  thick. 
  The 
  

  

  heartwood 
  occupies 
  about 
  three-fourths 
  of 
  the 
  entire 
  diameter 
  of 
  the 
  specimen 
  

  

  and 
  is 
  of 
  a 
  distinct 
  orange-yellow 
  color, 
  very 
  dense, 
  marked 
  by 
  closely 
  lying 
  

  

  52863°— 
  Bull. 
  261—12 
  5 
  

  

  