92 



FLOWERS. 



[SECTION 



The STAND \Ki) or Banner (/>.////,//,/), tlic large upper petal which is 



external in tlir hud and wrapped around tho others. 



The \ViM.s (.//->), i he pair of side petals, of quite different shape from 



the standard. 



The Ki i.i, (< ',i,-i,ia), the two lower aiid usually smallest petals ; these are 



lightly coalesceut into a body which bears some likeness, not to the keel, 



but to the prow of a boat; and this encloses the stamens and pistil. A 



Pea-blossom is a typical example ; the present illustration is from a species 



of Locust, Robinia hispida. 



265. Labiate Corolla (Fig. 256-25S), which would more properly have 



been called Bilabiate, that is, two-lipped. 

 This is a common form of gamopetalons co- 

 rolla ; and the calyx is often bilabiate also. 

 These flowers are all on the plan of five ; 

 and the irregularity in the corolla is owing 

 to unequal union of the petals as well as to 

 diversity of form. The two petals of the 

 upper or posterior side of the flower unite 

 with each other higher up than with the 

 lateral petals (in Fig. 256, quite to the top), 

 forming the Upper lip : the lateral and the 

 lower similarly unite to form the Lower lip. 

 The single notch which is generally found 

 at the summit of the upper lip, and the two 

 notches of the lower lip, or in other words 

 the two lobes of the upper and the three of 

 the lower lip, reveal the real composition. 

 So also docs the alternation of these five 

 parts with those of the calyx outside. When 

 the calyx is also bilabiate, as in the Sage, 

 this alternation gives three lobes or sepals 

 to the upper and two to the lower lip. Two 

 forms of the labiate corolla have been desig- 

 nated, vi/. : 



Ringeni or Gaping, when the orifice is 

 wide open, as in Fig. 256. 



Perxuitufc or Muxla-il, when a protube- 

 rance or intrusion of the base of the lower 

 lip (called a Palate) projects over or closes 



the orifice, as in Snapdragon and Toad-Flax, Fig. 257. 258. 



Fi<:. 263. C.>n.lla of a purple Gerardia laid open, showing the four stamens; the 

 cross shows where the fifth stamen would lie, if present. 



I'n:. 264. Corolla, laid open, and .stamens of Pentstemon grandifiorus, with a 

 sterile filament in the place of the fifth stamen, and representing it. 



FIG. 265. Corolla of Catalpa laid open, displaying two good stamens and three 

 abortive ones or vestiges. 



