386 



836. CAREX. 



flat. Fwms very large tufts, p. 6. Boggy 

 shade. 



** Root creeping. 

 t Beak round, olliquely truncate. 



21. incurva. Spikes forming a compact, 

 roundish head, bracteate. Glmnes ovate, 

 acute, slightly mucronate. Culm curved, 

 smooth. Fr. nerveless, p. 6. High mica- 

 ceous Alps. Sandy shores, Sc. 



22. foetida. Spikes in a compact head. 

 IV. acuminate, 3-edged. Beak sKghtly winged, 

 rough on the margin. Culm rough on the 

 angles from the base. p. 7, 8. High moist. 

 ra. and w. Alps. 



ft Beak flattened, ending in 2 teeth. 



23. stenophylla. Spikes in an ovoid or 

 oblong head. Fr. plano-convex, acuminate. 

 Beak rough on the edge. Nerves of Glume 

 evanescent. Culm smooth at base. p. 4. 

 Grassy hills. Boh. Mor. lower Aust. 



24. chordorhiiza. Spikes in a compact 

 head. Fr. gibbous, many-nerved, tapering 

 abruptly into a short, cloven, smooth, some- 

 what membranous beak. Culm smooth, much 

 exceeding L. p. 5, 6. Deep bogs. n. Ger. 

 Palat. rare. Sw. 



25. divisa. Spike compound, rather com- 

 pact. Fr. gibbous, many-nerved, contracting 

 abruptly into a short beak. Glume as long as 

 fruit : nerve excurrent. Stem roughish at 

 top. Root widely creeping, p. 5, 6. 3Ioist 

 pastures, occ. 



26. lobata. Spike compound, ovoid. Fr. 

 nerved. Glimies ovate, acute, pointless, p. 

 Alps of Prov. and Pdrn. — Schkuhe. Con- 

 sidered by Gay as a var. of C. divisa. 



27. schcenoides. Spike compound, short. 

 Fr. elliptic, gibbous, faintly nerved, tapering 

 into a short, smooth beak. Glume as long as 

 fruit : nerve excurrent. p. 5. Grassy hills. 

 lower Aust. 



b. Arrangement of barren and fertile flowers 

 irregular. 



28. repens. Lower Spicules fertile, rather 

 remote ; middle barren at top ; upper barren, 

 crowded. Glumes of fertile Spicules 1 -nerved. 

 Fr. acuminate, cloven, gibbous, rough on 

 margin, p. 5, 6. Pavia. Pdm. 



29. modesta. " Lower Spicules fertile ; 

 upper bai-ren ; lowermost bracteate. Glume 

 ovato oblong ; barren diandrous. Fr. ovato- 



oblong, margined, acuminate into a bidentate 

 beak. Ehizoma short and thick, p. 5, 6. 

 Marsh between Pirou and Criance in lower 

 Normandy. Differs from C. arenaria by the 

 number of stamens, by its habit and its sta- 

 tion in damp meadows, and by the rather ob- 

 tuse ghimes." — Gay. 



30. arenaria. Root far creeping. L. 

 smooth. Lower Spicules fertile ; middle bar- 

 ren at top ; upper barren. Glumes 7-nerved, 

 acuminate. Fr. ovate, acuminate : the acumen 

 with finely serrate wings, p. 6. Sand. 



31. intermedia. Root creeping. Upper 

 and lower Spicules fertile; middle barren. 

 Glumes shorter than fruit. Nerve evanescent. 

 Fr. elliptic, acuminate, with an obscure serru- 

 late margin, p. 6. Marshy meadows. 



32. Iwdibunda. " Root tufted. Spike 

 contracted, compound at base, simple and ex- 

 clusively barren at top ; a short bract at the 

 base. Spicules mostly uaisexual. Glumes very 

 obtuse, pointless. Fr. plano-convex, nerveless, 

 ovate, attenuate into a nearly entire beak. p. 

 5, 6. Bog des Rosieres near Pirou in lower 

 Normandy. The arrangement of flowers re- 

 sembles that of C. arenaria; in habit and 

 mode of growth it is like C. paniculata." 

 —Gay. 



33. microstyla. Root fibrous. Barren 

 and fertile Fl. variously intermingled. Glumes 

 ovate, acute, equalling fruit. Fr. small (a 

 line long), compressed, conical, rough at top, 

 cloven. Nut nearly round. — Gaud. p. 6-8. 

 High pastures, mid. Alps, very rare. 



c. Barren Mowers at base of each spicule. 



* Root far creeping. Fruit serrulato- 

 ciliate. 



34. brizoides. Spicules about 5, cm'ved, 

 approximate, all complete. Fr. erect, plano- 

 convex, lanceolate, serrulato-cUiate from base ; 

 tapering into a cloven beak, as long as glume. 

 Spikes pale. p. 5, 6. Gi-assy shade. G. 

 occasionally. 



35. obmulleriana. " Spike compound, 

 somewhat 2-rowed at top. Spicules 8-12, 4 

 or 6 of the upper barren at top, approximate, 

 lanceolate, at last fi'equently cm'ved ; lower 

 remote, oblongo - obovate, barren at base; 

 lowest with a leafy bract. Fr. half as long as 

 glume, acuminate into a plano-convex, cloven 

 beak. Margin serrulato-ciliate almost from 

 base. p. 5, 6. Moist meadows. Rothen- 

 bach in Bav." — Koch. 



