22 
Am.: Labrador. As.: Mouth of the Kolyma. 
Geogr. area: North America, Iceland, Europe, Siberia, Asia Minor 
to Tibet and Japan. 
A. 
B. 
Bb. 
Order XI. JUNCACEAE Vent. (By O. GELERT). 
Capsule with many seeds, Leaves terete or channelled, glabrous, sheaths split 
Juncus. 
Capsule with 3 seeds, Leaves flat or channelled, generally hairy with long 
hainsvatithesmarginss sheathsvemtines.) scr enc) «tela sonst) ici) tet teemenicmte Luzula. 
1. JUNCUS L. 
Stem leafless, inflorescence apparently lateral, because the involucral leaf is 
terete and appears as a continuation of the stem. 
a. Panicle dense, few-flowered, involucral leaf about as long as the stem. 
Sepals acuminate longer than the capsule ............ J. filiformis. 
b. Panicle compound many-flowered, involucral leaf about half as long 
as the stem, sepals about as long as the capsule, the inner obtuse mu- 
CRONAte Asie Vtoceaxe toe pn setts aot cohen cle, Coane emonse tars hence J. balticus. 
c. Panicle dense, few-flowered, involucral leaf short, sepals shorter than the 
Capsules. cits toy oye. tafe te) ae alerts news, vie tl a) (eh fayetace feetol econ fell mre J. arcticus. 
Stem leafy, inflorescence terminal. 
a. Leaves knotted. 
a. Culms at the base generally bulbous thickened, leaves capillary, panicle 
loose:swith fewwlheadsss 2... pen egies ie el sper pe Ceenenee J. bulbosus. 
6. Culms not bulbous thickened, leaves not capillary, nearly terete, panicle 
compound with numerous few-flowered heads on erect branches J. alpinus. 
b. Leaves not knotted. 
a. Flowers in close heads, culm with leaves at the base 
1s Heads 137 capsullevacute’, teen eis actu ay sis tes J. castaneus. 
2: Head\solitary, ‘capsulesobtuse ie. ois siens aii, siren clic J. triglumis. 
3. Head solitary, capsule obtuse emarginate......... J. biglumis. 
p. Flowers in few-flowered heads, culm leafless at the base, 2—3-leaved 
atgthessumamitryrsc caw memeb eM Eee ego ele) caseclmecats J. trifidus. 
y. Flowers solitary, panicled. 
1. Perennial, densely tufted, only with basal leaves. . . J. squarrosus. 
2. Annual, stem branched, diffuse, leafy ........... J. bufonius, 
47. J. filiformis L. 
Lge. Consp. Fl. Groenl. p. 124; Ledeb. Fl. Ross. IV p. 228. 
Stems densely tufted from the creeping rhizome, pliable, leafless, 
covered with leafless sheaths at the base, minutely furrowed. In- 
florescence apparently lateral, dense, few-flowered, involucral leaf 
long, about as long as the stem. Sepals lanceolate acuminate, the 
inner somewhat shorter and less acute, longer than the nearly globose 
capsule. Anthers shorter than the filaments. Sheaths shining brown, 
sepals and capsule greenish or pale brown. 
