CXLVI. CTPEEACE.?:. 891 



scabrid or I'arely (S. Utoralis and -S'. Kysoor) plumose. Stamens 1-3 ; 

 anthers linear. Ovary obovoid ; style slender, the base dilated ; stigmas 

 2-3, slender. Nut obovoid, trigonous or biconvex, smooth or nearly 

 so ; the style leaving no button on the nut. — Disteib. Species about 

 13(5, spread throughout the world. 



Large or middle-sized herbs ; stems 1-6 ft. or more long, 

 leai'y only near the base, rush-like ; hypogynous bristles 

 present or not. 



Nut marked with transverse wavy lines ; hypogynous 

 bristles 0. 



Stems flowering nearer to the base than the top, 

 stout, terete, spongy ; glumes ^ in. long, with a 

 subcordate base, not inflated in front, hardly 



keeled 1. S. articulatus. 



Stems flowering nearer to the top than the base, 

 slender, obtusely trigonous ; glumes y^in. long, 

 with taperi)ig(not subcordate) base, not inflated 



i n front, strongly keeled 2. <S'. supinns. 



Stems flowering nearer to the top than the base, 

 slender, subcompressed ; glumes often 5-ranked, 

 \ in. long, with tapering (not subcordate) base, 



inflated in front, keeled 3. S. qtiinqjte farms. 



Nut not marked witli transverse wavy lines. 



Hypogynous bristles A. 8. corymbosus. 



Hypogynous bristles present. 



Hypogj-nous bristles retrorsely scabrid (not plu- 

 mose). 



Glumes 2-fid at the apex 5. 8. mari/lmus. 



Glumes not 2-fid at the apex 6. 8, grossub. 



Hypogynous bristles plumose. 



Inflorescence lateral ; nut plano-convex 7. 8. lif oralis. 



Inflorescence terminal ; nut obovoid 8. 8. Kysoor. 



Small tufted herbs with slender stems never reaching I ft. 

 long; hypogynous bristles 0. 



Pei-enuial herb 9. S. Kyllingioides. 



Annual herbs. 



Glumes elliptic ; mucro ^ the length of the blade ; 



bracts many, reaching 3^ in. long 10. 8. Michelianus. 



Glumes trapeziform ; cusp as long as the blade ; 



bracts 1-3, reaching 1 in. long 11. 8. sqnarrosics. 



1. Scirpus articulatus, Linn. Sp. PZ. (1753) p. 47. A glabrous 

 perennial (?) herb; stems 1-3 ft. long, densely tufted, as thick as the 

 little finger, spongy and transversely septate within (visible externally), 

 terete, striate, flowering nearer the base than the top. Leaves 0, or the 

 sheaths with a membranous acute tip sometimes 1 in. long. Spikelets 

 variable in length, |-| in. long, ovoid-oblong, acute, terete or obscurely 

 angular, rusty-brown, sessile in laterally stellately spreading clusters of 

 15-60 ; bracts 0. Glumes i- in. long and nearly as broad, broadly ovate, 

 acute, very shortly mucronate, closely imbricate, membranous, concave 

 persistent, scarcely keeled, with a subcordate base and hyaline margins. 

 Stamens 3, reaching i in. long; anthers linear, obtuse, ^ in, long, 

 yellow. Nut J^ in. long, obovoid, sharply triquetrous, black, opaque, 

 shortly pointed, striate with transverse wavy lines; style pr in. long • 

 stigmas 3, nearly as long as the style. Fl. B. I. v, 6, p. 6o6 ; Grab! 

 Cat. p. 233; Boeck. in Linnaea, v. 36 (1870) p. 702: Trim. Fl. Ceyl! 

 V. 5, p. 75 ; Woodr. in Journ. Bomb. Nat. v. 13 (1901) p. 432; Prain! 



