Class VI. Order I. 139 



JUNCUS BUFONIUS. L. Toad Rush. 



Culm leafy, dichotomous ; leaves angular, subseta- 

 ceous ; flowers oblong, solitary, sessile. 



A small rush of wet grounds, sometimes viviparous. July. 

 JUNCUS BULBOSUS. Li. Bulbous Rush, Black Grass. 



Culm compressed, undivided ; leaves linear, chan- 

 nelled, panicle cymed ; calyx obtuse, shorter than 

 the capsule ; capsule roundish, obtuse. 



A common rush of salt marshes, often giving, when in fruit, a 

 dark colour to the tracts where it prevails. It makes good hay. 

 July. 



JUNCUS SPICATUS. Lt. Spiked Rush. 



Leaves flat ; spike racemed, nodding, compound 

 at base ; capsules acute. 



Culm slender, with an oblong, nodding head. On the summit 

 of the White mountains, its only American locality with which 

 I am acquainted. July. 



* JUNCUS MILITARIS. Bayonet Rush. 



J. folio unico, articulato, culmum superante ; 

 panicula terminali, prolifero ; capitulis subquinquc- 

 floris. 



Leaf one, jointed, longer than the culm ; panicle 

 terminal, proliferous ; heads about five flowered. 



Root creeping, scaly. Culm as large as a goose quill, two or 

 three feet high, smooth, with a long sheath or two at base, and 

 commonly another above the leaf. Leaf cylindrical, erect, joint- 

 ed with internal partitions, inserted below the middle of the 

 culm, and exceeding it in height by half a foot or more. Pani- 

 cle terminal, erect, of half a dozen smooth branches, most of 

 them proliferous, invested with sheathing, lanceolate bractes at 

 base. The branchlets end in small heads of from four to six ses- 

 sile flowers. Calyx segments acute, brown, edged with green. 

 The unripe capsule is acuminate. Discovered by Mr. Greene 

 growing plentifully in a pond at Tewksbury. 



