10 



CXLII. XYRIDEiE (bROWN). 



[Xyris. 



Lateral sepals ^-^ Hn. 

 broad, broadly lanceo- 

 late, acute; keel regu- 

 larly much curved from 

 base to apex, with a very 

 narrow wing below 

 Tjateral sepals ^ lin. broad, 

 linear - lanceolate, very 

 acute ; keel slightly 

 curved at the middle, 

 erect at the apex, nar- 

 rowly winged 

 Lateral sepals ^- i lin. 

 broad, oblanceolate, ob- 

 tuse ; keel nearly straight 

 in the lower § 

 broadly winged 

 ttfKeel of the lateral sepals distinctly and rather 

 coarsely serrulate ; bracts with a very 

 distinct greyish dorsal area. 

 Peduncle ^-^ lin. thick, acutely 4-6- 



angled; spike 2^-3 lin. thick . 



Peduncle stout, 1-1^ lin. thick, terete, 



many-striate; spike 5-6 lin. thick . 



tttfKeel ot the lateral sepals very distinctly 



and usually rather densely ciliate to the 



10. X. scahridula. 



11. X. humpatensis^ 



12. A', afftnis. 



25. 



26. 



X. angularis. 

 X. decipiens. 



apex. 

 Spikes not more than .5-6-flowered ; flower- 

 ing bracts all reaching to netrrly the 

 same level ; peduncles not more than ^ 

 lin. thick, slightly compressed . 

 Spikes 10-30-flowered ; flowering bracts 

 imbricated one above another. 

 Peduncles distinctly compressed ; spikes 

 blackish-brown, scarcely shining ; 

 bracts 2^-2f lin. long, without a 

 dorsal area .... 



Peduncles terete or subterete, very 

 smooth and shiniiig ; spikes chest- 

 nut-brown ; bracts If— 2^ lin. long, 

 with an indistinct dorsal area . 28. X. hatokana. 



13. A', ohscura. 



31. X. Hildehrandtii. 



1. X. foliolata, XUss.in Sv&)isk.Vet. Akad. Handl. xxiv. No. 14, 65. 



Peduncle about 2 ft. long, " teretely triquetrous," glabrous Peduncular- 

 sheath green, with a subterete leafy point 1 J in. long. Spike 4 J lin. 

 long, 3 lin. thick, ovate, involucrate ; lowest involucral bract about 

 5 lin. below the spike, 6 in. long, subterete, sheathing at the base, the 

 3 other involucral bracts reduced to flat spreading sheaths, decreasing 

 in size from IJ to J in. long, about IJ lin. broad. Flowering bracts 

 2 J lin. long, l| lin. broad, broadly obovate, obtuse, very shortly apicu- 

 late, coriaceous, cucullate, entiie, bright fuscous, lighter towards the 

 margins, slightly shining, with a triangular area on the back. Lateral 

 sepals 2 lin. long, oblong, keeled ; keel narrowly winged, ciliate. 



