20 TRIAND. MONOG. 



generally longer than the cyme. Spikelets very small, numerous, 

 greenish. Stigmas 3. Fruit with about 6 bristles. 

 6. ERIOPHORUM. 

 * Spine solitary. 

 f Culm naked. 



1. E. filpinum (alpine Cotton-grass), culm triangular, leaves 

 much shorter than the sheaths, spike oblongo-ovate, E. B. 

 /.311. 



HAB. Mountain bogs, rare. First discovered in a bog 3 m. E. of 

 Forfar, but which is since drained, by Mr. Brown and G. Don. 

 Mountains in Breadalbane, Mr. Somerville. Fl. June. 3/ . 



Root creeping, throwing up many upright culms, 6 8 inches high, 

 slender, with short subulate leaves from the long inner sheaths. 

 Spike very small, few-flowered. Glumes ovale ferruginous obtuse, 

 nerve green, in the 1 2 outer and sterile ones extended into a 

 macro. Stain, mostly 2, sometimes wanting. Fruit surrounded 

 by erect silken hairs more than twice as long as the spike. 

 \"\ Culm leaf-bearing. 



2. E. vaginatum (Hare's- tail Cotton-grass), culrn above trian- 

 gular, spike ovate. Lig/itf. p. 90; . B. I. 873. (E. cces- 

 pitosum. Host et Schrad.) 



HAB. Turf-bogs, not uncommon. Pentland-hills, and Dalmahoy -hill, 

 Edinb., Maugh. Appin,Argyleshire, Capt. Carmichael. Fl. May. 7/ . 



Culms, when in flower, shorter than the leaves, when bearing seed 

 much elongated, 1 I* foot high. Leaves almost subulato-seta- 

 oeous, compressed, channelled, sheathing j upper sheaths with gra- 

 dually shorter leaves, the uppermost leafless and inflated obtuse. 

 Spike large, ovate, acuminate, remarkably thin, membranaceous, 

 pellucid, blackish. Silky hairs of the seed twice as long as the spike. 



3. ft. capitatum (round-headed Cotton-grass), culm rounded to 

 the top, spike almost sphaerical. E. B. t. 2387. 



HAB. Ben Lawers, by the side of a rivulet near the limits of perpetual 

 snow, G. Don. Fl. Jul. Aug. I/ . 



Smaller than the last, 8 10 inches high, but stouter, with fewer leaves 

 on the stem. Besides the different shape of the spike, the glumes 

 are brown, more opaque, with the outer ones frequently much the 

 largest, so as to resemble an involucrum. In other respects they 

 are alike. It is, in all countries, a very alpine plant. 

 ** Spikes many, pedunculated. 



4. E. gracile (slender Mountain Cotton-grass), culms trigonous 

 channelled, spikes longer than the involucre. E. B. t. 2402. 



. (E. triqur.tr urn. Host et Schrad.} 

 HAB. Boggy places in the micaceous soil of Ben Lawers and on Clova, 



G. Don. FL July. I/ . 



Much the slenderest of this division. Leaves few, narrow, much keeled 



_ Tat the back, grooved or channelled on the upper side. Spikes 23, 



oblong, at first sessile, then pedunculated, longer than the involucre. 



,. Glumes oblongo-ovate, greenish-brown, obtuse, membranaceous 



and ribbed. 



