KCIUISETUM. 
405 
(). E. palusire (h.) ; st. with (I — H deep furrows branched 
throughout, sheaths loose ])ale witli acute wedgeshaped teeth 
ti])])ed witli brown and membranous at the edges. — E. B. 2021. 
N. 40, 47 and 49. — St. slightly rough. Catkin blunt. Sheaths 
of the colour of the st. or paler ; teeth brown with nearly trans- 
parent margins, rib furrowed on the hack. Branches usually 
barren, or (ji. polystachion) each terminating in a catkin. Occa- 
sionally (y. iiudum DC.) the angles and teetli are fewer and the 
st. nearly or quite simj)le and dwarf. — Sj)ongy hogs. y. Sandy 
places. P. VI. VII. 
7. Jf. hyemule (L.) ; st. simi)le very rough with 14 — 20 slender 
furrows, sheaths close whitish but the top and bottom black, teeth 
slender black deciduous. — E. B. 915. iV. 17- — St. 1 — 2 ft. high, 
simple. Catkin with an aj)icidus. Sheaths widest at their top, 
at first green with a black crenate rim after the teeth have fallen, 
then entirely black and ultimately jiale in the middle and black 
above and below. — Damp banks and woods. P. VII. VIII. 
8. E. Mackaii (Newm.); st. simple or very slightly branched 
very rough with 8 — 12 furrows, sheaths close ultimately wholly 
black, teeth slender j)ersistent. — JV. 24. E. elonyatum Hook, not 
AVilld. E. trachyodon (Braun) Koch?— St. 1 — -3 feet high, 
simple or with solitary distant branches. Catkins with an api- 
culus. Sheaths quite cylindrical, i)ale green with a black band 
beneath the teeth but ultimately wholly black. Teeth much more 
persistent than in the preceding, usually black.— Mr. Newman 
has shown [Phyt. i. 306.) that this is not the E. elonyatum 
CWilld.), the European form of which is the same as E. ramo- 
sissimum (Desf.) and E. ramosum (Schleich.) Koch. — Mountain 
glens. P. VII. VIII. 
9. E. varieyatum (Weber and Mohr); st. simple or very 
slightly branched very rough with 4 — 10 furrows, sheaths sliyhtly 
enlaryed upwards yreen below black above, teetli obtuse each 
tijiped with a deciduous bristle. — JV. 31. — St. about a foot high, 
erect, usually simjile except at the base. Lower half of the 
sheaths green like the stem, u])jier part black ; teeth persistent, 
ovate, black in the centre, with a white membranous margin. 
Catkin apiculate. — /3. arenarium ; st. procumbent, usually more 
slender, teeth of the sheaths wedgeshaped. E. varieyatum Sm., 
E. B. 1987. — y- Wilsoni (Newm.); st. erect tall (3 ft.), sheaths 
with a black ring at the summit : teeth short obtuse. JV. 39. — 
Wet jilaces, or in water, chiefly in mountainous districts. /3. sandy 
iilaces near the sea. y. “in a ditch at Mucruss, Killarney.” Jlir. 
IV. Wilson. P. VII. VIII. 
