PLend.ph. 12. JUNCE^E. 104. Acorus. 159 



Fam.VII. 12. JUNCE^. De Candolle. 



Floiuers hermaphrodite, or diclinous; perigoiiviim free, 

 often glumaceous, 6-sepaled ; siamevs 6, rarely 3 iJHaments 

 inserted in the base of the sepales ; anthers 2- celled; ovary 

 1 ; 3-celled, many-seeded, seeds on the paa'titions ; or 

 1 -celled, 3-seeded, seeds at the base; style 1; stigmata 1 

 or 3 ; capsule 3-valved, valves partition-bearing ; spermo- 

 dermis neither crustaceous, nor black ; perisperm cartila- 

 ginous ; corcLilum enclosed. — Root annual or perennial, 

 mostly fibrous ; rhtzoma often creeping ; leaves sheathing, 

 or approaching to sheathing ; flowers panicled or corym- 

 bose, rarely spiked. 



Flowers in a round, lateral spike. 



Perlgoniam 6-cut ; style ; cap^ide 3-angular, 

 3-celled AcoRUs. 104. 



Flowers in a corymhus or panicle. 



Filaments naked ; caps. 1 -celled, 3-seeded Luzula. 106. 



Filaments naked ; caps. 3-celled, many- 

 seeded ; stigmata 3 Juncus. 105, 



Filaments woolly ; caps. 3-celled, many- 

 seeded; stigma 1, capitate Abajma, 107. 



I. 104. ACORUS. Dioscorides. Sweetflag. 



Spadix cylindrical, lateral, tessellated with flowers ; peri- 

 gonium glumaceous^ 6-lobed ; stamens 6 ; style ; capside 

 3-angular, 3-celled, 1-seeded. — Rhizoma creeping; leaves 

 swordshape, sheathing one another at bottom; spadix from 

 the side of the leaf. 



Acorus U7id?datus. Wavy sweetflag. 



Floral leaf m\xc\\ longer than the spike. 



Acorus vcrus, aive Calamus officinarum, Park. 140; Rail Syn. 437, 1, 



Acoras veriis officinis falso calamus, Ger. em. 62. 



Acorus calamus, Lin. S. P. 462. 



Acorus undulatus, Stokes Bot. Mat. Med. 2, 282. 



Banks of rivers ; perennial ; June. 



Spadix 3 in. long, close covered with florets in a spiral 

 line ; leaves very large, 3 or 4 feet long ; root aromatic. 



