EQirisEmi. 429 



throtighmd, sheaths loose pale with acute wedgeshaped teeth 

 tipped with brown and membranous at the edges, branches 

 simple.— j;. J?. 2021. S.Q. X 43, 47 & 49. —St. slightly rough. 

 Barren st. whipshaped at the end. Spike blunt. Sheaths 

 coloured like the st. or paler ; teeth brown with nearly transpa- 

 rent edges, ribs furrowed on the back. Branches usually barren 

 or (Ji. polystachion) each ending in a spike, hoUou: with shallow 

 furrows, lowest joint of branch (often reduced to its sheath) /aW- 

 ing short of the st. sheath. Occasionally (y. )H(rf!/m DC.) the angles 

 and teeth are fewer and the st. nearly or quite simple and dwarf. 

 — Spongy bogs. y. Sandy places. P. VI. VII. E. S. I. 



7. E. hyemule (L.); st. simple very rough with 14 — 20 slender 

 furrows, sheaths close whitish hut. the top and 'botfotn black, teeth 

 with slender black -brown very deciduous tips. — JE. £. 915. S. 8. 

 I\\ 17. — St. 1 — 2 ft. high, simple, biennial, its central hollow 

 equalling at least f of diameter. Spike apiculate. Sheaths 

 widest at their top, at first green with a black crenate rim after 

 the teeth have fallen, then entirely black, and ultimately pale 

 in the middle and black above and below. — Damp banks and 

 woods. P. YU. VIIL E. S. I. 



8. ? JE. Mooi-'ei (Xewm.) ; st. simple annu^ very rough with 

 about 12 furrows, sheaths loose white with the base black, teeth • 

 black-based rather persistent. — Phytol. v. 19. >S. 12. — St. 1 — 2 

 ft. high, never branched, its central hoUow equalling about f of 

 diameter. Spike apiculate. Sheaths loose, pearly white ; teeth 

 long, usually light brown, whiti.sh above, more persistent and 

 longer than those of JE. hyeinale. — Wicklow. P. V III. I. 



9. E. trachxfodun (A. Br.) ; st. simple or ver,- slightly branched 

 very rough with 8 — 12 furrows, sheaths close ultimatdy wholly 

 black, teeth slender persistent. — E. Mackaii N. 24. 8. 9. — St. 

 1—3 feet high, simple or with solitary distant branches, biennial, 

 its central hollow equalling ^ of diameter. Spike apiculate. 

 Sheaths quite cybLndrical, pale green with a black band beneath- 

 the teeth but ultimately wholly black. Teeth more persistent 

 than in the two preceding, usually black. — Mountain-glens. P. 



■^Tt. vin. S. I. 



10. E. variegdtum (Schleich.) ; st. simple or slightly branched 

 very rough with 4 — 10 furrows, sheaths slighUy enlargedwpwards 

 green below black above, teeth blunt each tipped with a deciduous 

 bristle. — X. 31. — St. about a foot high, erect, usually simple 

 except at the base or irregularly branched, its central hollow 

 equalling y of diameter. Lower half of the sheaths green like 

 the stem, upper part black ; teeth persistent ovate, black in the 

 centre, with a white membranous margin. Spike apiculate. — 

 E. Wilsoni (Newm, 39. S. 10) is probably a large form.^-i3, are- 



