582 Morphologie, Biologie und Systematik der Phanerogamen, 
268. Will. Boott (70) giebt lateinische Diagnosen der folgenden neuen Species und 
bespricht dieselben so wie bereits einige bekannte Arten: Rhynchospora Harveyi, Carex 
straminea Schk. var. invisa, var. u. ©. praegracilis, O. Assiniboinensis, C. Lemmoni. 
269. Borbas (71) schildert die vegetative Vermehrung von Scirpus radicans Schk. 
und Heleocharis Carniolica var. prolifera. Staub. 
270. N. L. Britton (84) beschreibt eine neue Oyperus-Species aus Neu Mexico: (. 
Rusbyi. Culm slender, triangular, smooth, about a foot in height; leaves narrowly linear, 
smooth, sharter than the culm; involucre about five-leaved, equalling the rays; umbel 
three-to fiverayed, one or two of the rays elongated to a length of about three inches; 
headscomposed of four to seven, lanceolate, dente spikelets, which are thirteen-to twenty- 
flowered, their axes not wingend; scales about eleven-nerved, the mid-nerve slightly darker, 
keeled, distichously arranged, broadly ovate andoltuse when unfolded, all fertile; achenium 
black, smooth, sharply triangular obovate; stamens three; roots fibrous, with short, scaly 
rhizomes.“ 
271. N. L. Britton (85) beschreibt folgende neue Arten und Varietäten: Cyperus 
rufescens Torr. et Hook. var. denticarinatus n. var. „Scales with a prominent keel, which 
is armed with small hyaline teeth near its apex. Stamen solitary. Umbel appearing somewhat 
lateral.“ ©. Buckleyi n. sp. „Culm quite stout, triangular, smooth, one to two feet high. 
Leaves long, linear, about 3 lines wide, smooth. Involucre of about four, mostly elongated, 
linear, smooth leaves. Rays of the umbel about five to seven, the longest about four inches 
in length. Spikelets broadly linear, .5 to .75 inch long, 15 lines wide, 12 lines wide, 12—20- 
flowered, clustered in loose heads of 12—30 at the ends of the rays, spreading or in part 
reflexed, their axes zig-zag, not winged. Glumes oblong, or oblong-ovate, obtusish or truncate, 
with a dark keel and lighter brown, somewhat scarious margins, prominently 9—11 nerved. 
Achenium obovate; very sharply triangular, obtuse, with a short point. Stamens 3.* 
0. oxycarpoides n. sp. Culm about two feet high, smooth, bearing on its lower portion 
about three elongated, linear leaves (S—10 inches long, 3 lines wide), which are slightly 
rough-margined. Involucre of about six elongated leaves, resembling those of the culm. 
Inflorescence of a single, terminal, dense, globular head, about au inch in diameter, com- 
posed of a very great number of sharply acute, teretish, about five-flowered spikelets, one- 
eishth to one-quarter inch in length. Scales oblong-ovate, acutish. Achenium triangular, 
oblong, acute, about one-half the length of the scale (one-half line long). Stameus 3. 
Resembling the genus Oxycarpum, Rees, in outward appearance.“ ©. uniflorus Torr. var. 
pumilus n. var. — „Culm about three inches high, equalling the leaves. Inflorescence of 
a single, occasionally slightly compound head of from 8 to 20 spikelets, mostly composed 
of three glumes; the lower persistent, empty; tho middle one fertile; tho upper sterile, 
subulate.* Fuirena squarrosa Michx. var. macrostachya n. var. „Spikes 8 to 12 lines 
long, lanceolate, stont. Perianth-scales tipped with a downwardly-barbed own of their own 
lenght, or longer. Plant one to two feet high stont; leaves broadly linear, nearly smooth, 
‚some of themslightly ciliate towards the base.“ Heleocharis Texana n. sp. „Culm very 
slender, less than half a line wide, three-angled, apparently erect. Spikes linear, slightly 
compressed or terete, one line wide, .5 to .75 inch long, acutish. Scales very numerous, 
the lowest ovate and obtusish, the others ovate-lanceolate and acute, all with broad hyaline 
margins. Achenium obovoid, contracted at the neck, tipped with a conical, acute tubercle. 
Style deeply three-cleft, roughened. Stamens three, longer than the achenium,“ 
272. 0. B. Clarke (102). Der erste Theil der Abhandlung bespricht im Vergleich 
mit den indischen Arten die einzelnen Theile von COyperus: 1. das Rhizom; 2. den Halm; 
3. die Blätter; 4. die Bracteen; 5. den Blüthenstand („the umbel“); 6. die Aehrchenspindel 
(„the Rhachilla of the Spikelet“); 7. die Glumae; 8. die Staubblätter; 9. den Griffel; 
10. die Nuss. 
Der zweite Theil bespricht einige schwierige Arten und bestrittene Gattungen: 
1. Subgenus Anosporum; 2. Cyperus pygmaeus und Isolepis Micheliana; 3. Oyperus alo- 
‚pecuroides und CO. dives; 4. Cyperus inundatus und C, procerus; 5. Genus Kyllingia. 
Der dritte Theil giebt den „Conspectus generis“: 
