148 CLASS VI. ORDER I. 



JuNcus BULBOsus. L. Bulbous Riish, Black Grass. 



Ciilm compressed, undivided; leaves linear, chan- 

 nelled, panicle cymed ; calyx obtuse, shorter than the 

 capsule ; capsule roiuidish, obtuse. 



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

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

 July. 

 * JuNcus MiLiTARis. BttT/onet Rush. 



J. folio iiit.ico, articulate, ciihnum superaitte ; pani- 

 cula terininali, prolifero ; capitiiUs siilxpii^iqiiejioi'is. 



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, jointed 

 with internal partitions, inserted below the middle of the culm, 

 and exceeding it in height by half a foot or more. Panicle ter- 

 minal, erect, of half a dozen smooth branches, most of them pro- 

 liferous, invested with sheathing, lanceolate bractes at base. 

 The branchlets end in small heads of from four to six sessile 

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

 unripe capsule is acuminate. — Discovered by Mr. Greene grow- 

 ing plentifully in a pond at Tewksbury. 



JuNcus POLYCEPHALOs. Micli. Many headed Rush. 



Culm few leaved, erect ; leaves somewhat knotty ; 

 heads round, many flowered, panicled ; calyxes linear; 

 stamens six. Mich. ahr. 



Sl/n. JuNCUS ECHINATUS. MuM. 



Common in meadows and low ground. Stem erect, firm, 

 round, smooth. Leaves round, smooth, interrupted with nu- 

 merous transverse partitions or joints. Heads resembling small 

 burrs, sessile and pedunculated, in a proliferous panicle or um- 

 bel, with very unequal branches. Calyx leaves crowded, linear- 

 lanceolate, very acute. — Perennial. 



