46 OBJECT LESSONS IN BOTANY. 
cohering (united) by their edges. The Convolvulus (Figs. 
128, 144), the Phlox (Fig. 126), the Pink-root (Fig. 127), 
&c., show a similar cohesion (union) of their petals into a 
tube more or less complete. 
: \\ 
Fig. 124. Flower of Zecuma radicans 
Fig. 128. Pink: u, the five petals ; (the Trumpet-creeper): ¢ is the calyx, 
d, the calyx, composed of five united composed of five united sepals; ¢, the 
sepals, c, a bract; d, several bract- tube; 8, the segments of the corolla or” 
lets. the petals, forming the border. 
45. The calyx with united sepals is called monosepalous, 
and the corolla of united petals monopetalous (from the Greek 
monos, one), from the mistaken idea that this calyx consisted 
of only one sepal, &e. Gamopetalous and gamosepalous are 
similar words, used in the same sense. Opposed to these 
terms are polysepalous and polypetalous (Greek polys, many). 
76. The gamosepalons calyx or gamopetalous cvrolla, al- 
though composed of several pieces, is described as a single 
organ, and its lower part, formed by the united claws, 
whether long or short, is the tube (Fig. 124, 2); the upper 
%4. Describe the calyx of Pink ; corolla of Phlox. 
75. Meaning of the terms monopetalous, &c.? 
"6. Define the limb of a monopetalous corolla ; the tube ; the throat. 
