GLOSSARY 523 



Silique (Sil'-ique), a dry fruit of two united carpels which separate at 

 maturity leaving the partition wall persistent, 209. 



Simple, said of a pistil which consists of a single carpel. 



Soredium (So-re'-di-um, plural, soredia), a small body formed on the 

 thallus of certain lichens and containing the fungal and algal com- 

 ponents which separate from the thallus and by growth form new 

 ones, 299. 



Sorus, a group of spore cases as in the ferns; in the fungi a fruiting pustule 

 bearing the spores which ruptures the epidermis of the host at maturity, 

 3 J 2, 359, 3- 



Spadix, a flower cluster in which the axis of the spike or head is fleshy, 



!5> J 53> !7 8 - 



Spa the, a strap-shaped leaf below or nearly enclosing a spadix, 150, 

 178. 



Sperm, in botany applied to the male sexual cell or nucleus; also called 

 spermatozoid, or antherozoid, 199-202, 242, 244, 245, 247, 252, 255, 

 260, 262, 281, 338, 366, 372, 375, 378, 380, 401, 419. 



Spermatium (Sper-ma'-ti-um; plural, spermatia), minute spore-like bodies 

 developed in spermogonia, of unknown function, once supposed to be 

 the sperms of the rusts, sac-fungi and lichens, 311, 316, 319, 320. 



Spennatophyta (Sper-ma-toph'-y-ta) or Sper / -ma-to-phytes, branch of the 

 Plant Kingdom including the seed plants, 387-421. 



Spermatozoid (Sper-ma-to-zo'-id), a motile sperm. 



Spermogonium (Sperm-o-go'-ni-um, plural, spermogonia), flasked-shaped, 

 or conoid conceptacles bearing minute spores of unknown function 

 called spermatia, once supposed to be the sperms in the rusts, sac- 

 fungi and lichens, 311, 316, 319, 320. 



Spike, a flower cluster with a long axis thickly covered with flowers having 

 very short flower stalks, 150, 153. 



Spikelet, a small spike, or a secondary lateral spike in a larger one, 



172, 173- 

 Sporangiophore (Spor-an'-gi-o-phore = sporangium bearer), the stalk which 



bears the sporangium, 275. 

 Sporangium (Spor-an'-gi-um = spore case), an organ or structure which 



contains spores, 273, 276, 293, 330, 358, 360, 397. 

 Sporidium (Spor-id'-i-um, plural, sporidia), spores borne on the promycelia 



of the smuts and rusts; sometimes applied to ascos pores, 305-309, 



3 X 5, 3 l8 - 



Sporocarp (Spor'-o-carp), a spore fruit, or spore fruit body, 246. 

 Sporogonium (Spor-o-go'-ni-um, plural, sporogonia), spore producer, 



the capsule, with its stalk, which bears the spores in the Broyphytes, 



339, 340, 342, 343, 345, 348, 350, 355. 

 Sporophore (Spor'-o-phore = spore bearer), a single hypha, or a more or 



