OLOSSAUr OF 



Duration. 



Ft'GACious or Caducous : falling off as soou as the flower 

 ofKMis, as in Bloo«lroot and Poppy. 



Dkciduous : falling off about the same time as the corolla and 

 stamens, as in Buttercup. 



Peksiste.\t: remaining after the corolla has fallen off, as in 

 Hollyhock and Sweet-Brier (Fig. 121). 



As the sepals are only modified leaf-forms, they may 

 be further descriljed by means of the terms already 

 explained for leaves, such as lanceolate, pubescent, etc. 



THE COROLLA. 

 Cohesion. 



PuLYPFrrALOus : when the petals are entirely distinct from 

 each other, as in Buttercup (Fig. 110). In such petals 

 two parts may often be distingui.shed, abroad upjierpart, 

 the litnh, and a narrower lower part, the claw (Fig. 122). 



Gamopetalous : when the petals are grown together in how- 

 ever slight a degree, so that the corolla may be pulled off 

 in one piece, as in Convolvulus, etc. (Fig. 123). 



The terms tube, limb and throat are applicable to such 

 corollas, as well as to the gamosepalous calj'x. 



A gamopetalous corolla is further described by stating 

 its Form. It is 



(a) Tttftular, when of nearly the same width from top 

 to bottom (Fig. 124). 



(b) Funnel-shaped , when the tube spreads out gradu- 

 ally into a wide border (Fig. 123). 



(c) CatnpantUato, or bell-shai>ed, when the tube is 

 short and wide, with a slightly spreading border (Fig. 12.')). 



(d) Salivr-shajM-d, when the tube is long and narrow 

 with a spreading border at right angles to it (Fig. 12()). 



(e I Hotate, when the tube is very short with a spread- 

 ing l)order (Fig. 127). 



yl) Urceofaff, or urn-shape<I, when the tube is swollen 

 Vjelow and contrar.te<l at the mouth (Fig. 12H). 



(g) Labiate, when distinctly two-lipped as in Catnip 

 and Turtle-head (Fig. 129). 



A Labiate corolla is further de.scribed as 



(1) liinrjfnt, when the mouth is wide open (Fig. ii'l';. 



(2) Prr • ■' . when the mouth is closed by an 

 upward i , -n of thr- lower lip called the palate 

 (Fig. 130). 



(h) Liyulafc, when one side of the tube is prolonged 

 into a ribbon or strap, as in Dandelion (Fig. 119). 



— Calyx. 



Fig. 121. 



Fig. 122. 



.^ 



Fif,'. 123. 



V\\!. 126. 



Fig. 125. 



^ 



VxiC. 12a 



KiK. U'7. 



Fig. 130. 



