136 



THE FLOWER 



215 21(j 



Tntrnrsp. ov inrumhet-it, when facing inward, that is, toward the 

 center of tlie flower, as in Magnolia, Water Lily, 

 etc. 



Extrorse, whan facing outward, as in the 

 Tulip Tree. 



274. Anthers may become one-celled either by 

 confluence or by suppression. 



275. By confluence, when the two cells run 

 together into one, as they nearly do in most 



species of Pentstemon (Fig. 216), more so in INIonarda (Fig. 219), 

 and completely in the ilallow (Fig. 217) and all the Mallow family. 



276. By suppression i)i certain oases the anther may be reduced to 

 one cell or halved. In Globe Amaranth (Fig. 218) there is a 

 single cell without vestige of any other. Different species 

 of Sage and of the White Sages of California show various 

 grades of abortion of one of the anther cells, along with a 

 singular lengthening of the connective (Figs. 220-22-1). 



219 'I'M 221 222 223 224 225 22G 



22.5, 220. PoUiiiia: 22."i. a pair of poUiiiia i>f a Milkweed (Asclepias) attacheil 

 Ijy stalks to a gland; moderately niagiiitied ; 22t>, pollhiiinu of an 

 Orchis (Ilabenaria), \\\t]\ its stalk attaclied to a sticky gland, inag- 

 nitied; each of tlie packets or partial pollinia of whieli it is made up 

 is composeil of a large iinmher of pollen grains. 



Pollinia. — In Milkweeds and in most Orchids all the pollen of an 

 anther cell is compacted or coherent into one mass, called a polle)\ 

 mass, or Pollinium, plural Pollinia (Figs. 225, 226). 



The Ovule 



277. Ovule (from the Latin, meaning a little egg) is the technical 

 name of that which in the flower answers to and becomes the seed. 



278- Ovtdes are naked in gymnospermous plants (as above de- 

 scriljed); in all others thej- are inclosed in the ovary. They may be 

 produced along the whole length of the cell or cells of tlie ovary, and 

 tlien they are apt to be numerous ; or only from some part of it, gen- 

 erally the top or the bottom. In this case they are usually few or 

 single (solitary, as in Figs. 228-230). They may be sessile, i.e. without 



