STEREOCAULON. 



[ 737 ] 



STICTEI. 



globe with eight biciliated green cells, 

 placed at equal distances on the equator. 



BLBL. Cohii, Sieb. $ Kollik. Zeitechr. iv. 

 77, Ann. N. H. x. 321, pi. 6; Mic. Jn. vi. 

 131; Rabenh. Alg. iii. 100; Archer, Qu. 

 Mic. Jn. 1865, 116. 



STEREOCAU'LON, Schreb. A genus 

 of Cladodei (Lichenaceous Lichens). S. 

 fMtschale, the most distinct species, is abun- 

 dant on rocks and stones in mountainous 

 districts. Thallus greyish and rough, apo- 

 thecia conglomerated, blackish brown j sper- 

 mogonia in little brown heads, near the 

 apothecia. Other species. 



BIBL. Hook. Br. Fl. ii. pt. 1. 237 ; Tu- 

 . Ann. Sc. Nat. 3. xvii. 197 ; Engl. Bot. 

 pi. :>2 ; Leighton, Lich. Fl. 69. 



STEREOXE'MA, Kutz. A supposed 

 Alga of the family PhaBoneineae (Kiitzing), 

 stated by Cohn, however, to consist of the 

 decaying stalks of ANTHOPHYSA. (Kutz. 

 Sp. Alg. 160.) 



STE'REUM, Fr. A genus of Auricula- 

 rini (Hymenomycetous Fungi), character- 

 ized by its coriaceous substance, and even 

 hymenium without bristles, as in Hymeno- 

 chccte. 



The species are numerous, amongst which 

 Stereitm hirsutum is one of our commonest 

 Fungi. 



BLBL. Fr. Ep. 548: Berk. Outl t. 17. 

 f. 7; Cooke, Handb. 316. 



STERIG'MATA. The term applied by 

 Tulasne to the filaments forming the pedi- 

 cels of the sperinatia in the FUN<H (PL 26. 

 figs. 2, 3). 



STERROM'ONAS, Kent. A genus of 

 Flagellate Infusoria. Free, elongate, with 

 t\vo flagella, the longer rigid, the shorter 

 flexible and vibratile. S. formicina, in 

 vegetable infusions, salt and freshwater. 

 (Kent, Inf. 420.) 



STICHIDTA.' Pod-shaped processes of 

 the fronds of Florideous Algae, containing 

 the tetraspores imbedded in them (fig. 157, 

 p. 236). 



STICHOCH/E'TA, Cl. and Lachm. A 

 genus of Hypotrichous Infusoria, fam. Oxy- 

 trichina. Free, elongate, narrowed and 

 with cirri in front, and with styles and 

 seta) behind. S. pediculiformis ; marine. 

 (Kent, Inf. 775; 01. & Lachm. Inf. 

 152.) 



STICHOCOC'CUS, Nag. A genus of 

 Palmellaceae, consisting of very minute, ob- 

 long, thin- walled, green cells, single, or usu- 

 ally arranged in rows. S. bacillaris (PI. 3. 

 fif. 25), on dump decaying wood, especially 



of willows, walls, &c. (Rabenhorst, Fl. Alg. 

 iii. 47.) 



STICHOSTE'GIA, D'Orb. (RHABDOI- 

 DEA, Schultze). D'Orbigny arranged all 

 Foraminifera having uniserial or linear 

 growth under this head as an Order ; but, 

 besides the many straight Nodosarince, 

 there are several rectilinear forms of other 

 genera belonging to different Natural 

 Orders, as Lituola, Pavonia, Articulina, &c. 



STICHOT'RICHA, Perty. A genus 

 of Hypotrichous Infusoria. Elongate, va- 

 riable, narrowed in front; outer anterior 

 cilia very long, in a lateral row ; often con- 

 tained in a cylindrical carapace. 



Several species; salt and freshwater. 

 (Kent, Inf. 775 ; Perty, Lebensf. 153.) 



STIC 'T A, Ach. A genus of Phyllodei 

 (Lichenaceous Lichens), with a tough fo- 

 liaceous thallus, growing over rocks and 

 trunks of trees, mostly in mountainous dis- 

 tricts. S. pulmonaria forms large shaggy 

 fronds of olive-green colour when fresh, 

 pale-brown when dry, pitted and reticu- 

 lated; apothecia mostly marginal, red- 

 brown. Sperinogonia occur scattered on 

 the upper surface, mostly near the ends of 

 the lobes. 



BIBL. Hook. Br. Fl. ii. pt. 1. 208; Tu- 

 lasne, Ann. Sc. Nat. 3. xvii. 169, pi. 1; 

 Engl. Bot. pi. 572; Leighton, Lich. Flor. 

 11]. 



STIC'TEI, Fries. A group of Helyel- 

 lacei (Ascomycetous Fungi), containing 



Fig. 697. 



Fig. 699. 



Fig. 698. 



Stictis versicolor. 

 Fig. 697. An open disk, emerged on the surface of 



wood, having an irregular border. 

 Pig. 698. Vertical section of the same. 

 Magnified 20 diameters. 



Fig. 699. Asci and paraphyses from the last. Magni- 

 fied 200 diameters. 



several genera of plants, growing on wood, 



3s 



