HEXANDRIA. MONOGYNIA. 227 



jnary radical conspicuous, conic. Somorhize + roundish, 

 ar^, dark green, umbilically depressed at the summit 

 liavmg a small concealed internal cavity, and a lateral 

 snal.ow groove for the reception of the gemmula which 

 js appressed to it and curved over the greater part of the 

 somorhize. 



Of this genus there is a second species in Japan. 



. 334. ACORUS. Z. (Calamus, Sweet-Fia.^.) 



Spadix cylindric, covered with florets. Co- 

 rolla 6-petaJIed, naked. Style none; stigma a 

 mere prominent point. Capsule 3-celled, 3- 

 seeded? 



Spadix coming out laterally upon the middle of the 

 leaf, which IS produced bejond it in the form of a sword 

 blade. Leaves ensiform. Root aromatic. 



Species. 1. A Calamus. Common and indigenous. 

 Stamina varymg from 6, to 5 and 4, on the same spadix 

 Flowers tessellately aggregated, greenish. 



Common to Europe and North America, there is also a 

 second species in China. 



335. JUNCUS. L. (Rush.) 



Caliv inferior, 6-parted, equal, persistent. 

 Coroila none. Stigmata 3. Capsule 1 -celled, 

 o-valved. Seeds numerous. 



Stem simple, gramineous, without nodes, and leafless 

 or nodose with the leaves sheathing the node-, flowerb 

 terminal or lateral, corymbose or paniculate, branchlets 

 sheathed at the base- 



Species. 1. J. acntus. 2- con^lomeratus. 3 effusus. 

 A- filifortnis. 5. bicornis. 6. setaceus. 7. marginatua. 8. 

 nodosus. 9. polycephalus. 10. s>/lvaiic us. li. Terticillatus.- 

 12. acammatus. 13. aristatus- 14. bulbosus. 15. tennis. 

 l6.oufo7ims. 17. campcstris. IS. melanocarpus. 19. rcpens. 



Chiefly an European and North American genus, with 

 the exception, however, of a few species in Barbary, 

 South Am erica, and the Cape of Good Hope. 



t In this case a large round, ingerminaiive body laterally 

 connected by a vascular system to the gemmule and forraing- 

 the principal part of the seed. 



