CL. III.] TRIANDKIA. 59 



spike imbricated all round. Husks none. Style simple at the 

 base, deciduous. 



10. ELEO'CHARIS. Chaff-scales single, uniform, arranged in a 



spike imbricated all round. Husks none. Style enlarged at the 

 base, permanent 



11. ERIOPHORUM. Chaff-scales single, uniform, arranged in a 



spike imbricated all round. Husks none. Seed with numerous 

 very long hairs arising from the base. 



8. CYPE'RUS. Chaff-scales single, uniform, in two rows, ar- 

 ranged in an imbricated spike. Husks none. Seed naked at 

 the base. 



12. NA'RDUS, Chaff-scales two. Husks none. 



(Some species of Juncus.~) 



Order II. DIGYNIA. Two Pistils. 



* Flowers in panicles. Calyx of two or three chaff-scales, 

 containing one flower. 



15. ALOPECU'RUS. Chaff-scales two, nearly equal, acute. Husk 



one, awned at the ba-se. 



16. KNA'PPIA. Chaff-scales two, nearly equal, abrupt. Husks 



two, unequal, awnless. 



14. PHLE'UM. Chaff-scales two, nearly equal, pointed. Husks 

 two, concealed, awnless. Seed loose. 



13. PHA'LARIS. Chaff-scales two, unequal. Husks three or four, 



the two innermost downy. Seed invested by the hardened in- 

 ternal husks. 



17. POLYPO'GON. Chaff-scales two, equal, awned at the summit. 



Husks two, concealed, the outermost with a terminal awn. 

 Seed loose. 



18. MI'LITJM. Chaff-scales two, unequal, tumid. Husks two, con^ 



cealed. Seed invested by the hardened husks. 



19. AGRO'STIS. Chaff-scales two, acute, awnless. Husks two, 



longer than the chaff-scales, membranous, tufted with hairs at 

 the base. Seed loose. 



20. CY'NODOK Chaff-scales two, acute, lance-shaped, equal. 



Husks two, very unequal, compressed. Seed invested by the 



hardened husks. 

 34. SPARTI'NA. Chaff-scales two, lance-shaped, unequal. Husks 



two, unequal, compressed. Seed loose. 

 38. LAGU'RUS. Chaff-scales two, unequal, fringed, with terminal 



feathery awns. Husks two, unequal, the outer with three awns. 



21. DIGITA'RIA. Chaff-scales two or three, very unequal, awn- 



less. Husks two, unequal, awnless. Seed invested by the 

 hardened husks. 



(Some species of Arundo. Melica uniflora.) 



** Flowers in panicles. Calyx of two chaff-scales, containing 

 two or 



23. AI'RA. Chaff-scales two, unequal. Flowers two. Husks two, 

 the outer awned above the base. Seed loose in the husks. 



26. ME'LICA. Chaff-scales two, unequal, awnless. Flowers two, 

 together with the rudiments of a third. Husks two, awnless. 

 Seed invested by the hardened husks. 



25. HO'LCUS. Chaff-scales -two, unequal. Flowers two, one of 



