372 90. JCTTCAOEiB. 



summit,— J. atrdtus (Krock.), R. ix. 407, haviiif? "more deeply 

 striate 1." than either of the two preceding species and the inner 

 acute perianth-segm. about equalhng the ovate-attenuate cap- 

 sule, — and /. mg'ricam (Drej.), R- ix. 407, with unequal acute 

 perianth-segm. and a subglobose capsule will perhaps be 

 found.] 



17. J. nigritel'lus (D. Don) ;' 3 — 4-leaved St. and internally 

 joined I. nearly cylindrical, panicle slightly compound erect, 

 per.-segm. nearly equal (3 inner rather longer and broader) all 

 acute falling short of the linear-ohlong trigonous beaked (black) 

 capsule.— £'. B. S. 2643, not of Koch.—Qt. erect, 6— 12 in. high. 

 L. scarcely compressed. Clusters of more fl. than in Sp. 16. 

 Caps, brown, at length black and glossy, more abruptly pointed 

 than in J. lamprocarpus. — Boggy places in the north. P. VII. 

 VIII. E.S.I. 



18. J. supinus (Moench) ; St. flhform, 1. setaceous slightly 

 channelled faintly jointed internally, panicle nearly simple ir- 

 regular long with few distant clusters, per.-segm. equal acute 

 (3 inner rather blunt) nearly equalling the oblong vei-y blunt 

 mucronatc (pale brown) capsule, anth. as long as their filaments. 

 — E. B. SOl. -R. ix. 397. J. vliginosus and J. subverticillatus 

 Sm. — Extremely variable in size and the direction of its stems, 

 sometimes erect, at others prostrate and rooting at every joint, 

 or floating, Fl. often viviparous. Stam. 3 or 6. — ^. Kochii ; 

 caps, shorter, stam. 6, filaments nearly twice as long as the 

 elliptic anthers. J. nigritellus Koch. St. 78. 2. — Boggy and 

 wet places. 0. Ivy Bridge, Devon (in a bog). Oonnemara, 

 Gahvay. P. VI.— Vm. E.S.I. 



ttl Flowers solitary, remote, or corymbose and forming a 

 terminal panicle. Seeds not appendaged. « 



19. J. squarr6sus (L.) ; st. leafless simple, 1. linear channelled 

 radical, panicle terminal compound with oymose branches, per.- 

 segm. ovate-lanceolate acute or bluntish equalling the. obovate 

 blunt mucronate capsule, anth. 4 times as long as their filaments. 

 —E.B.Qn. -Si!. 36. II. ii. ix. 400.— St. erect, 6— 12 in. high. 

 L. many, somewhat spreading, rigid, half as long as the stem. 

 Caps, pale brown, shining. — Wet heaths and moors. P. VI. VII. 



E. S. I. 



20. J. compres'sus (Jacq.); st. with I leaf in the middle, 1. linear 

 channelled, panicle terminal compound subcymose usually fall- 

 ing short of the bract, per.-segm. oval-oblong blunt falling short 

 of the roundly ovate shortly mucronate capsule. — E. B. 934. St. 

 36. 13. a. ix. -399. — St. slender, erect, round and leafy below. 



