Sclioenus.'] CLXXH. CYPERACEJ:. (C. B. Clarke.) 673 



hollow of the zigzag persistent rhachilla, trigonous. Speciea 59, chiefly 

 Australian; with a few Cosmopolitan, Malayan, Japanese and Chilian. 



1. S. nigricans, Linn. Sp. PL 64 ; stem without nodes except near 

 base, spikelets almost capitate, hypogynous biistles |- nut or nearly obso- 

 lete, style 3-fid, nut sessile ovoid smooth marble-white. Boiss. Fl. Orient. 

 v. 393 ; Aitch. in Journ. Linn. Soc. xviii. 104. Chsetospora nigricans, Kunth 

 Enum. ii. 323 ; Boeck. in Linnsea, xxxviii. 290. 



PUNJAB; Kurum Valley, Aitchison. SiND; Pinwill. DISTRIB. Nearly cos- 

 mopolitan, except S. E. Asia and Australia. 



Almost glabrous. Rhizome horizontal, woody; stolons 0. Stems 4 24\in., 

 subterete. Leaves 4-12 in., often half stem, very narrow with incurved margins. 

 Spikelets 1-15, j- in. long, in a close distinctly compound head; lowest bract sub- 

 erect, often 1-4 in. Glumes ovate, obtuse, microscopically hispid on keel, chestnut 

 or brown ; three lowest empty, 1-3 next nut-bearing. Nut $ in ellipsoid, top 

 acutely pyramidal. 



2. S. calostachyus, Poir. Encycl. Suppl. ii. 251 ; stem with nodes 

 throughout its length, spikelets nearly 1 in. long loosely panicled, 

 hypogynous bristles nut white, style 3-fid, m it ovoid slightly tubercular 

 or wrinkled chestnut-black. Benth. Fl. Austral, vii. 368. Chastospora 

 calostachya, Br. Prodr. 233. Cyclocampe waigionensis, Steud. Syn. Cyp. 

 156. Cyclocarpa waigouensis, Miq. Fl. Ind. Bat. iii. 339. 



SINGAPORE ; Ridley. DISTBIB. Malaya, Australia. 



Rhizome short, horizontal, woody. Stems 1-2^ ft., rigid, rather slender, sub- 

 terete. Lower leaves 412 by ~ in., glabrous ; sheaths at their mouth scarious, 

 scarcely pubescent. Panicle 8-16 in. long, with 8-14 spikelets ; lower bracts like 

 the leaves, upper reduced nearly to sheaths. Spikelets elliptic-lanceolate, compressed, 

 chestnut or brown. Glumes elliptic-lanceolate, scarcely acute, minutely hairy on 

 margins; 4-8 lowest empty, densely packed; 3-2 following nut-bearing, distant on 

 zigzag rhachilla. Nut % in., subsessile, trigonous, curved. 



16. CZiADXUZK, P. Browne. 



Stout perennials, glabrous or inflorescence minutely hairy. Stems round 

 or flattened, leafy or leafless. Leaves equitant, xiphoid or trigonous at 

 top, or flat. Spikelets panicled, often in sessile clusters at the angles of 

 zigzag branches, small, with 4-11 glumes. Flowers J.-7, axillary, lowest 

 of each spikelet perfect, nut-bearing. Glumes imbricate on all sides ; lowest 

 1-4 (usually 2-3) empty, smaller (or not larger) than succeeding 1-3 in- 

 cluding perfect flowers; uppermost glumes male or sterile, tabescent. 

 Hypogynous bristles slender, or small, or 0. Stamens 3-2. Style linear; 

 branches 3, long ; style-base dilated, fused with nut. Nut small or scarcely 

 middle-sized ; beak large pyramidal, or smaller umbonate, or undistinguish- 

 able from nut, or reduced to a speck. Species 44; one cosmopolitan; the 

 rest insular or maritime, in both hemispheres. 



Subgenus I. EUCLADIUM, Benth. Fl. Austral, vii. 402. Stems tall, round 

 with nodes carrying leaves (or leaf-like bracts) their whole length. Leaves' 

 flat, not distichous. Panicle, oblong of several corymbs. Spikelets nu- 

 merous, clustered, most 2-fld., the lower flower nut- bearing. 



1. C. Mariscus, Br. Prodr. 236 ; stems 3-8 ft., leaves i in. broad 

 scabrous, glumes brown subobtuse, hypogynous bristles 0, style 3-fid. nut 

 ovoid acute shining chestnut-colrd. Boeck. in Linnxa xxxviii. 232. C. 

 VOL. vi. xx. 



