CYPERACE^. 



389 



acute, lenticular, not nerved, somewhat spread- 

 ing, witt a short, entire beak. Sheaths of L. 

 with a slight web. Glume lanceolate, dark 

 'purple, p. 5. Br." — JBab. 



b. Barren Spikes more than one. 

 * Without fertile flowers at base. 



68. aquatilis. "Spikes erect, barren, 1 

 or more : fertile 3 or 4, elongated, narrowed 

 below ; lower ones stalked. Bracts leaf-like, 

 erect, exceeding stem. IV. elliptic, lenticular, 

 without nerves, broader than glume. Stem 3- 

 edged, smooth. Root tufted. Sheaths of L. 

 not filamentous, p. 7. Ciova." — Bab. 



69. trinervis. Spikes oblong. Fr. oval, 

 subacute, with 4 or 5 complete nerves on back 

 and 3 on the inner face. Bracts of all the 

 fertile Spikes extending beyond the barren 

 spikes. L. keeled. Root stoloniferous. p. 

 5, 6. Sandy shores, w. Er. 



70. stricta. Spikes cylindrical ; the fer- 

 tile often tipped with barren florets. Fr. ob- 

 ovate, with many aerves. Lowermost Bract 

 short and slender. Sheaths of L. filamentous. 

 p. 6. Marshes. There is sometimes only one 

 barren spike ; and we find also a plant with 

 filamentous sheaths to L., with only one bar- 

 ren spike, and oblong fertile spikes, not tipped 

 with barren florets, -usually put with this, but 

 which seems to me rather a form of C. vulgaris. 



71. panormitana. "All Spikes long 

 linear ; barren 2 or 3 ; fertile 3 or 4 ; latter 

 somewhat nodding in fruit : lower remote, 

 somewhat stalked ; upper sessile. Bracts leafy, 

 without sheaths. Fr. smooth, elliptic, convex 

 on back, obsoletely nerved, terminating in a 

 very short and smooth, subbidentate beak. 

 Lower part of Spike closely tiled. Glumes lan- 

 ceolate, acute, hardly as long as fruit. L. flat. 

 Root fibrous, p. 4. Banks of streams. Pal." 

 ■ — Guss. 



72. acuta. Fr. elliptic, nerved, gibbous. 

 Barren Spikes 1-3 ; fertjle 3-4, cylindrical, 

 slender, often attenuate, and lax at base. 

 Lowermost Bract leafy, with long auricles. 

 Sheaths of L. not reticulate. Culm rough at 

 top. p. 6. Water. 



** Barren Spikes with fertile floivers at 

 base. 



73. moencliiana. Fertile Spikes erect, 

 acute, on short stalks. Fr. smooth, ovate, ob- 

 tuse, shorter than lanceolate, acute glume. 

 Root creeping. Lower Bracts long. p. 5. 

 Devil's ditches at Marburg in Hesse. — Rchb. 



Q. Spikes separate ; upper barren, solitary. 

 Stigmas 3. 



i. Beak short, membranous, or wanting. 



a. Spikes nearly sessile. {A long-stalked 

 Spike is occasionally met with, from the 

 root, or lower part of the stem, in some 

 species.) 



* Spikes approximate near top of culm. 



74. supina. Fr. elliptic, without nerves or 

 hairs. Beak long, truncate. Fertile Spikes 

 ovate. Root stoloniferous. p. 4, 5. Open 

 hills, n. and e. G. 



75. platystachya. Fr. elliptic, few-nerved, 

 downy. Beak long, membranous. Fertile Spikes 

 1-3 ; stalks included in the membranous 

 sheaths of the leafy bracts. L. channeled, not 

 keeled, p. MountaAns. Apenn. 



76. macrolepis. " Fertile Spikes 2 ; up- 

 per sessile, -close to the barren spike ; lower on 

 a short stalk, shorter than its leafy bract. 

 Glumes large, scariose, emarginate, mucronate ; 

 those of barren Spike obtuse, with a white 

 border. Fr. oblong, 3-edged." Apenn. Be- 

 tween C. clandestina andj C. ericetonim. — 

 KuNTH,/rowz DC. 



77. gynobasis. Fr. eUiptico-obovate, with 

 small bidentate beak, striate. Fertile Spikes 

 1-3, about 5-flowered; upper approximate; 

 lowest on a long stalk from base of culm. 

 Scales of fertUe Catkins hardly or not at all 

 cuspidate, p. 3, 4. Grassy hills, s. Sw. It. 



78. basilaris. Fr. elliptico-obovate, with 

 a short bidentate beak, hardly nerved. Fertile 

 Spikes 2-4, of 15-20 flowers; 1, or rarely 2, 

 near the barren spike, others on long stalks 

 from the base of the culm. Scales of fertile 

 Spikes with a strong cusp. p. 4. Damp. Cape 

 la Croisette near Cannes. — Jordan. 



79. Grioletti. Fr. obovate, with 2 smooth 

 teeth. Fertile Spikes about 4, erect; upper 

 sessile ; lowermost distant, on a long stalk. 

 Bracts leafy. Sheaths membranous, short ; 

 upper without sheath, p. PegK in Ligui'ia. 

 Kunth thinks it a var. of C. tomentosa. 



80. tomentosa. Fr. obovate. Beak in- 

 conspicuous. Bracts leafy, -with short, mem- 

 branous sheaths. Fertile Spikes 2, neaiiy ses- 

 sile. Root with long stolons, p. 6. Moist 

 meadows. G. and Fr. occ. 



13. thuringiaca, Schk. ? Lateral Spikes 

 tipped with male flowers. 



81. prsecox. Fr. elliptic, minutely emar- 



