384 JUNCACEAE. 
5. Juncus Balticus Willd. Baltic Rush. 
(Fig. 923.) 
Juncus Balticus Willd. Berlin Mag. 3: 298. 1809. 
Stems erect, 8’-36’ high, %’/-11{’’ thick, arising 
at intervals from a stout creeping rootstock 1//-1 4/7 
thick; basal leaves reduced to bladeless sheaths; 
panicle commonly 1/-234’ high; perianth 1 4//-2 4’ 
long, its parts lanceolate, acute, or the inner some- 
times obtuse, nearly equal, brown with a green mid- 
rib and hyaline margins; style '4’/-1’’ long; stigmas 
a little shorter; stamens 6, about two-thirds the 
length of the perianth; anthers about 3/// in length, 
much longer than the filaments; capsule about as 
long as the perianth, pale to dark brown, narrowly 
ovoid, conspicuously mucronate, 3-celled; seeds 
usually with a loose coat, nearly 14’ long, oblong 
to narrowly obovoid, oblique, about 4o-striate. 
On shores, Labrador to Alaska, southern New York, 
Ohio and Nebraska; far south in the western moun- 
tains. Alsoin Europe and Asia. Variable. 
6. Juncus Roemerianus Scheele. Roemer’s Rush. (Fig. 924.) 
Juncus Roemerianus Scheele, Linnaea, 22: 348. 1849. 
Stems 20’-4° tall, erect, arising singly from a 
tough scaly horizontal rootstock 2%4’/-5/’ thick; 
inner sheaths bearing erect blades of about the 
same length as the stem; inflorescence 214 /—6/ 
high, diffusely spreading, its leaf 4/-10’ long; 
heads 2-6-flowered; perianth pale brown, 1//-13¢/’ 
long, the parts linear-oblong, the outer acuminate, 
the inner shorter and bluntly acute; flowers imper- 
fectly dioecious; stamens 6, on fertile plants re- 
duced to sterile staminodia; capsule brown, about 
as long as the perianth, narrowly obovoid, obtuse 
or truncate, mucronate, 3-celled; placenta very 
thick and spongy, about one-third as broad as the 
valve; seed dark brown, //-3¢’’ long, obovoid, 
abruptly apiculate, indistinctly reticulate or dis- 
tinctly 20-26-ribbed and the intervening spaces im- 
perfectly cross-lined. 
In brackish marshes, New Jersey to Texas. Long 
confused by American authors with the following species. 
7. Juncus maritimus Lam. Sea Rush. (Fig. 925.) 
Juncus maritimus Lam. Encycl. 3: 264. 1789. 
Stems 20-40’ high, 1’’—2’’ thick, erect from a stout 
horizontal rootstock. Outer basal leaves reduced to 
bladeless sheaths, the innermost foliose, with a long 
terete stout blade about equalling the stem; leaf of the 
inflorescence erect, sometimes 1° long, sometimes 
barely exceeding the panicle; panicle 3/—8’ high, its 
branches stiff, erect; heads 2-6-flowered; perianth 
14//-14’ long, its parts green, lanceolate, with hya- 
line margins, the outer acuminate, the inner a little 
shorter; flowers perfect; stamens 6, two-thirds as long 
as the perianth; filaments about as long as the anthers; 
capsule 114//-134/’ long, narrowly ovoid, acute, mu- 
cronate, brown above, 3-celled, with thin placentae; 
seed brown, about 14’ long, the body narrowly and 
obliquely oblong, about 3¢’’ in length, 20-30-ribbed, 
indistinctly reticulate, tailed at cither end. 
Coney Island, New York. Common on the coasts of 
the eastern hemisphere. 
