﻿164 
  KEY 
  AND 
  FLORA 
  

  

  PASSIFLORA 
  L. 
  

   Characters 
  of 
  the 
  family. 
  

  

  1. 
  P. 
  incarnate 
  L. 
  PASSION 
  FLOWER. 
  Perennial. 
  Stem 
  often 
  

   20-30 
  ft. 
  long, 
  somewhat 
  angled 
  or 
  striate, 
  smooth 
  below, 
  downy 
  

   above. 
  Leaves 
  broadly 
  heart-shaped, 
  palmately 
  3-5-lobed 
  ; 
  the 
  lobes 
  

   acute, 
  finely 
  serrate, 
  usually 
  heart-shaped 
  at 
  the 
  base; 
  petiole 
  bear- 
  

   ing 
  2 
  oval 
  glands 
  near 
  its 
  summit. 
  Flowers 
  2-3 
  in. 
  wide, 
  solitary; 
  

   peduncles 
  3-bracted, 
  longer 
  than 
  the 
  petioles; 
  calyx 
  lobes 
  with 
  a 
  

   small 
  horn-like 
  appendage 
  on 
  the 
  back 
  near 
  the 
  apex, 
  white 
  within. 
  

   Petals 
  and 
  crown 
  purple 
  and 
  white. 
  Fruit 
  yellow, 
  about 
  the 
  size 
  and 
  

   shape 
  of 
  a 
  hen's 
  egg, 
  edible. 
  Seeds 
  with 
  a 
  pulpy 
  aril. 
  Common 
  along 
  

   fence 
  rows 
  and 
  embankments 
  S.* 
  

  

  2. 
  P. 
  lutea 
  L. 
  YELLOW 
  PASSION 
  FLOWER. 
  Perennial. 
  Stem 
  

   slender, 
  smooth, 
  6-10 
  ft. 
  long. 
  Leaves 
  broadly 
  heart-shaped, 
  3-lobed 
  

   at 
  the 
  summit, 
  entire, 
  often 
  mucronate 
  ; 
  stipules 
  small; 
  petioles 
  

   without 
  glands. 
  Peduncles 
  longer 
  than 
  the 
  leaves, 
  usually 
  in 
  pairs. 
  

   Flowers 
  greenish-yellow, 
  i-J 
  in. 
  wide. 
  Fruit 
  purple, 
  oval, 
  \ 
  in. 
  long. 
  

   Woods 
  and 
  thickets 
  S.* 
  

  

  69. 
  BEGONIACEJE. 
  BEGONIA 
  FAMILY 
  

  

  Chiefly 
  perennial 
  herbs 
  or 
  low 
  shrubs, 
  with 
  fleshy 
  or 
  very 
  

   juicy 
  stems. 
  Leaves 
  alternate, 
  generally 
  heart-shaped 
  at 
  the 
  

   base, 
  often 
  very 
  unsymrnetrical 
  ; 
  stipules 
  deciduous. 
  Flowers 
  

   monoecious, 
  in 
  cymes 
  or 
  other 
  clusters, 
  on 
  axillary 
  peduncles. 
  

   Stamens 
  many 
  (Fig. 
  25). 
  Pistillate 
  flowers 
  with 
  the 
  floral 
  

   envelopes 
  borne 
  on 
  the 
  ovary. 
  Ovary 
  3-angled 
  or 
  3-winged 
  

   (Fig. 
  25), 
  very 
  many-seeded. 
  

  

  BEGONIA 
  L. 
  

  

  Flowers 
  with 
  the 
  calyx 
  and 
  corolla 
  of 
  the 
  same 
  color, 
  stami- 
  

   nate 
  and 
  pistillate 
  ones 
  both 
  occurring 
  in 
  the 
  same 
  cluster. 
  

   Sepals 
  usually 
  2. 
  Petals 
  2 
  or 
  in 
  the 
  fertile 
  flowers 
  3 
  or 
  4, 
  

   sometimes 
  wanting. 
  Stamens 
  many 
  in 
  a 
  cluster, 
  with 
  short 
  

   filaments. 
  Styles 
  of 
  the 
  fertile 
  flowers 
  3, 
  often 
  with 
  long, 
  

   twisted 
  stigmas 
  (Fig. 
  25, 
  (7). 
  The 
  genus 
  contains 
  a 
  great 
  

   number 
  of 
  species 
  and 
  varieties, 
  cultivated 
  from 
  tropical 
  or 
  

   subtropical 
  regions, 
  of 
  which 
  only 
  a 
  few 
  of 
  the 
  commonest 
  

   are 
  here 
  described. 
  

  

  