282 JUNCACEAE 
Auricles at the summit of the leaf-sheath mem- 
ranous or scarious, whitish. 
Auricles membranous, scarcely scarious, 
rarely if at all DIOOnBen beyond the 
point of insertio 
Sepals and DA 2. ‘Be 4m long : capsule 
about as long as ie | perianth. 
Flowers and fruit conspicuously se- 
nd: perianth 2.5-3.5 mm. long: 
Sates longer than the filaments: 
ee shorter n the inflores- 
capsules o 
Flowers Cty pel mof at all secund : 
perianth long: anthers 
E than the 1 filaments : bracts 
DE the’ inflorescence: cap- 
ules AER ellipsoid or ellipsoid. 
Sepals and petals 4-6 mm. long: capsule 
shorter than a perian nih, 
Auricles scarious, ao prolonged beyond 
the point of inserti 
AC at the summit of "the e carti- 
aginous, yellow to yellow-brow 
Leaf- Ren terete, chanaeled along the upper s 
side. 
Lowest bract les SS than 4 times the length of the n 
pence: capsule ellipsoid or obovoid, with the ordinar 
dehiscence. 
Lowest d rarely less than 4 times the length of the in- 
ede : eapsule globose- overs: breaking up irregu- 
ariy 1 TA 
HI. MARGIN 
Stem floating, X SEDE or diffusely dico pira virens of a 
subulate t 
Stem erect or Hone So: capsule of an obovoid type. 
T n nth at least 144 longer than the capsule: anthers 
'ellow. 
Perianth equalling or barely exceeding the capsule: an- - 
hers reddish- brow 
ro dur 
IV. ABORTIV 
ooo thick and woody: leaves rigid: eae compound, 
the slender branches diffuse: flowers scattered. 
V. ARTICULATI 
Leaf-blades divergent from the stem: sepals longer than the 
petals. 
VI. ACUMINATI 
Capsule truly subulate. 
Uppermost leaf-shea "s with an almost ROE blade, this 
seldom exceeding 1 or 2 cm. in lengt 
Uppermost a -sheath with a normal blade few to several 
em. i 
Stamens Yu long as the petals, the anthers exserted be- 
tween 
nine considerably shorter than the petals: anthers 
Leaf-blades flattened and usua with i incomplete 
septa: capsule markedly red the valves in de- 
ile eurved n rd in the middle, but united 
above 
Leaf- blades ore compressed, the septa complete: 
2: D e beak pen the valves Separating through- 
i Scene, 
ae ellipsoid to linear- Tanceolate in outline, obtuse or 
E the apex, or sometimes mucronate, but not truly 
ate. 
Capsule one-half to two-thirds as long as the perianth. 
-] 
12. J. 
bo 
13. J. 
C2 
15. J. 
16. J. 
17. J. 
-J 
18. 
19. 
20. J. 
22. J. 
24. 
. d. 
d. 
n 
J. 
. Seeunaus. 
interior. 
georgianus. 
tenuis. 
Dudleyi. 
dichotomus. 
setaceus. 
repens. 
filipendulus. 
marginatus. 
aristulatus. 
abortivus. 
. Torreyi. 
megacephalus. 
8cirpoides. 
polycephalus. 
validus. 
brachycarpus. 
