382 



830. SCIRPUS. 



verse partition. No Sheaths or L. Stig- 

 mas 3. Bristles twice as long as 3 -edged 

 seed. a. 7, 8. Bfoist. w. shores of Kol- 

 mersee. Islands of the Elbe. Spezia. Friuli. 

 Sardinia. 



9. pauciflorus. Culm with, leafless 

 sheaths. Spike few-flowered, exceeding the 

 blunt, membrane-tipped, outer glume. Stig- 

 mas 3. Bristles short. Seed 3-edged. p. 



6, 7- Soffffy. Rare in It. 



10. alpinus. Stoloniferous. Culm some- 

 what striped. Sheath with a short L. Glume 

 with a thickened boat-like tip, falling short 

 of spike. Bristles 0. p. 7, 8. Verj/ high. 

 Zennatten. Sw. 



11. csespitosus. Upper Sheath of Culm 

 ending in short L. Outer Glimie largest, 

 with a leafy point, nearly equalling spike. 

 Bristles exceeding seed. p. 5, 6. Barren 

 moors. Not in s. It. ? 



B. Culm simple, nearly naked. Spikes ap- 

 parently lateral. 

 i. Spicules not condensed into a globe. 

 a. Glumes mucronate, entire. 



12. setaceus. Culm and L. setaceous. 

 Spicules 1-3, sessile. Seeds without bristles, 

 striped longitudinally, a. 7, 8. Wet sand or 

 gravel. Not in Sic. 



13. Savii. Culm and L. setaceous. Spi- 

 cules 1 or 2, sessile. Seeds without bristles, 

 marked with rough dots. a. 5-7. Wet. 

 s. Eng. It. 



fi. Minace, Pael. Culm rooting at base. 



14. supinus. Culm terete, naked. Spi- 

 cules 3-8, crowded, sessile on middle of stem. 

 Seeds without bristles, transversely rugose, a. 



7, 8. JFet banks. Rhine. Berlin, lower Aust. 

 Pdm. Mantua. Versailles. 



15. mucronatus. Cuhn 3-edged, leaf- 

 less, the top at last bent down. Spicules nu- 

 merous, crowded, sessile. Larger L. of Invol. 

 refract in fruit. Glumes ovate, obtuse, hardly 

 pointed. Bristles of Seed with reversed prickles. 

 Seed 3-edged, transversely rugose, p. 7, 8. 

 Stillwater. Baden. Carin. Cam. Pisa. Mantua. 

 Fen-ara. 3Ioist meadows. Pr. rare. s. Sw.' 

 This seems to have the habit of the following 

 division. 



b. Glumes mucronate, emarginate. 



16. lacustris. Culm round, with 2 or 3 

 scariose sheaths at base. Spicules in a termi- 

 nal panicle. Glumes smooth, fringed, pubes- 

 cent at top. Seeds 3-edged, smooth. Stig- 



mas 3. Bristles with reversed prickles, p. 

 6-8. Still water. 



17. Tabernsemontani {glaucus. Smith). 

 Culm round. Spicules ovate, crowded in a 

 terminal panicle. Glumes with rough dots, 

 fringed. Stigmas 2. Anthers hairless. Seeds 

 obscurely 3-edged, smooth. Bristles with re- 

 versed prickles, p. 8. Still water. Br. Is- 

 lands. G. 



18. carinatus. Culm obtusely 3-edged 

 above the middle. Pan. cymose. Outer L. 

 of Invol. erect, channeled, pungent. Glumes 

 smooth, fringed. Stigmas 2. Seeds convex 

 on back. Bristles of Seed mth reversed 

 prickles, p. 8. Water. Thames. Rhine in 

 Ober Baden. L. of Const. Danube. 



19. triqueter. Stem acutely 3-edged, 

 with 2-3 sheaths and a solitary L. Stigmas 

 2. Seed smooth, convex. Bristles with re- 

 versed prickles. Glume fringed, p. 7, 8. 

 Water. Fr. rare. G. rare. Thames. Mantua. 

 Pisa. 



20. littoralis. Culm acutely 3-edged 

 with 1 or 2 leafy sheaths. Stigmas 2. Seed 

 smooth, convex. Spicules sessile and stalked, 

 in a lateral, twice compound cyme. Bristles 

 feathery with upright hairs. Glumes subden- 

 ticulate. p. 6, 7. Marshes on coast of Mdt. 



21. Kothii. Stem acutely 3-edged, with 

 about 2 L. Stigmas 2. Spicules all sessile. 

 Glumes ciliato-lacerate, emarginate, with a 

 straight point. Seeds smooth, convex. (Bristles 

 half or one-third of seed, Koch,) (altogether 

 wanting, Bekt.) p. 7, 8. Ditches and pools. 

 Jersey. Pisa. Teste de Buch. Piave Vecchio. 



ii. Spikelets condensed into a globe. 



22. ISoloschcenus. Heads 1 or 2, or 

 in a simifle umbel. Stigmas 3. Seed haiiiess, 

 obovoid, 3-edged. Bristles 0. Invol. very 

 long, of 2 very unequal, reflexed, pointed L. 

 L. semiterete, channeled. Cuhn terete, with 

 1 or 2 acuminate scales at base. p. 6-8. 

 Moist sandy, s. and w. Fr. G. rare. It. 



iS. australis. Heads small, few, or solitary. 



7. romanus. Heads large, nearly solitary. 



5. globiferus. Heads proliferous, forming 

 a spurious decompound umbel. 



G. Panicle leafy. L. grass-like. Stein 

 Z-edged. 



23. maritimus. Spikelets few, crowded. 

 Stigmas 3. Bristles of Seeds with reversed 

 prickles. Glimies with sharp teeth ; (the mid- 

 dle Tooth awned, Bert.) L. of Invol. flat. 



