JUXCACEjE. 
313 
**** No barren stems. Flowers in a terminal head or 2 heads 
one above the other, or in paniclcd heads. Seeds not 
appeudayed. 
13. J. capitatus (Weigel) ; st. naked erect simple, 1. radical 
filiform, head terminal mostly solitary shorter than the setaceous 
bract, segments of the perianth ovate-lanceolate acuminate-aristate 
twice as long as the truncate apiculate caps., stam. 3. — E. B. S. 
2644. St. 13. /.—Plant 1 — 4 in. high. L. half as long as the 
stems. Heads large, of 3 — 6 sessile flowers. — Sandy ground in 
Guernsey and Jersey. A. VI. VII. 0. 
14. J. obtusiforus (Ehrh.) ; st. 2-leaved and as well as the in- 
ternally jointed I. terete, panicle repeatedly compound spreading 
divaricated, segments of perianth equal obtuse as long as the ovate 
acute trigonous capsule. — E. B. 2144. St. 77- 12. — Erect, 2 — 3 
feet high. St. and I. not compressed. — Marshes, rather rare. 
P. VII.— IX. 
15. J. acutiforus (Ehrh.) ; St. 3 — 4-leaved and as well as the 
internally jointed /. subcompressed, panicle compound pyramidal, 
segments of perianth acuminate-aristate inner ones longest all rather 
shorter than the narrow-ovate acuminate rostrate triquetrous 
capsule. — E. B. 238. J. sylvaticus Hoppe in St. 78. 1.— St. erect, 
1^ — 2 feet high. L. slightly compressed. Clusters 5 — 6-flowered. 
Caps, pale brown. — Boggy places. P. VI. — VIII. 
[J. fusco-ater (Schreb.), J. alpinus (Vill.), differs from the pre- 
ceding and following species by the acute dorsal angle of the 
sheaths of its leaves and the blunt segments of its perianth which 
are mucronate below their summit. It is common throughout 
Europe and no doubt will be found in Britain.] 
16. J. lamprocarpus (Ehrh.) ; st. 3 — 6-!eaved and as well as 
the internally jointed /. compressed, panicle repeatedly compound 
erect forked, segments of perianth equal acute the inner ones obtuse 
all shorter than the ovate attenuated mucronate triquetrous cap- 
sule.— E. B. 2143. — St. erect, 12 — 18 in. high. L. compressed, 
with numerous internal divisions. Clusters 4 — 8-flowered. Caps, 
dark brown. — Boggy places. P. VII. VIII. 
17. J. nigritellus (Don) ; st. 3 — i-leaved md together with the 
internally jointed /. nearly cylindrical, panicle slightly compound 
erect, segments of perianth nearly equal (3 inner rather longer 
and broader) acute shorter than the linear-oblong trigonous 
rostrate capsule. — E. B. S. 2643. not Koch, Kunth. — St. erect, 
6 — 12 in. high. L. scarcely at all compressed. Clusters of more 
numerous fl. than in the preceding. Caps, brown, at length 
black and glossy, more abruptly pointed than in J. lamprocar- 
pus. — Boggy places in the north. P. VII. VIII. 
18. J. supinus (Moench) ; st. filiform, 1. setaceous slightly 
p 
