( 500 .) 
CLA'DIUM * *. 
IAnnean Class and Order. Dia'ndria f, Monogy'nia. 
Natural Order. Cypf.ra'ce/e Juss. — Lindl. Syn. p.278.; 
Introd. to Nat. Syst. of Bot. p. 304. — Rich, by Macgilliv. p. 392. — 
Loud. Hort. Brit. p. 541.— Mack. FI. Hibern. p. 318. — Hook. Brit. 
FI. (4th ed.) p. 427’ — Cyperoide.®, Juss. Gen. PI. p. 26. — Sm. Gr. 
of Bot. p. 68.— Cyperales ; sect. Cyperin.e ; type, Papyrace.e; 
Burn. Outl. of Bot. v. i. pp. 354 & 356. — Calamari.e, Linn. 
Gen. Char. Stems leafy. Inflorescence terminal and axillary, 
panicled. Spikelets numerous, aggregate, bracteated, 1- or 2- 
flowered (see fig. 1). Glumes (see fig. 1 to 4.) somewhat 2-ranked, 
imbricated, concave, sheathing, mostly sterile, one or two of the 
uppermost only being perfect and single-flowered (see fig. 2). 
Corolla none. Filaments (see fig. 2.) 2 or 3, strap-shaped, longer 
than their glume. Anthers strap-shaped, upright. Germen (see 
fig. 2.) superior, egg-shaped, without any bristles or scales (hypo- 
gynous setce) at the base. Style (see figs. 2 & 5.) thread-shaped, 
the length of the stamens, deciduous, but without a joint at the 
bottom. Stigmas 2, 3, or 4, slender, pointed, downy. Fruit 
fdrupa ) (fig. 7.) a nut, with a thick fleshy epicarp (external coat), 
egg-shaped, pointed (see fig. 6). Seeds smooth. 
The much-branched panicle; the 1- rarely 2-flowered, aggre- 
gate spikelets, with chaffy, sheathing glumes, the lower ones smaller 
and empty ; and the fruit without bristles at the base ; will dis- 
tinguish this from other genera, without a corolla, in the same 
class and order. 
One species British. 
CLA'DIUM MARI'SCUS. Prickly Twig-rush. Prickly Bog- 
rush. German Prickle-rush. Long Bastard Cyperus. 
Spec. Char. Culm round, smooth, leafy. Leaves serrated at 
the margins and keel with strong, upright, bristly teeth. Panicle 
much divided, leafy. Spikelets capitate. 
Brown’s Prod. p. 236. — Sm. Engl. FI. v. i. p. 36. — With. (7th od.) v. ii. p. 81. — 
Lindl. Syn. p. 283. — Hook. Brit. FI. p. 13. — Macr. Man. Brit. Bot. p. 249. — Hook. 
FI. Scot. p. 11. — Winch’s FI. of Northumbl. and Durh. p 3. — Walker’s FI. ofOxf. 
p. 9. — Murr. North. FI. p. 22. — Irv. Loud. FI. p. 89.— Baines’ FI. of Yorksh. p. 
112. — Leight. FI. of Shropsh. p. 35. — Mack. Catal. PI. of Ircl. p. 9. ; FI. Hibern. 
p. 324. — Cladium germanicum, Schrad. FI. Germ. v. i. p. 75. t. 5. f. 7.** — 
Gray’s Nat. Arr. v, ii. p. 70. — Schcenus Mariscus, Linn. Sp. PI. p. 62. — Huds. 
FI. Angl. (2nd ed.) p. 14. — Engl. Bot. t. 950. — Host. Gram. Austr. v. iii. p. 37. 
t. 53. — Willd. Sp. PI. v. i. pt. I. p. 259. — Sm. FI. Brit. v. i. p. 43. — With. 2nd ed. 
v. i. p. 42. ; 5th ed. v. ii. p. 109. — Davies’ Welsh Bot. p. 6. — Purt. Midi. FI. v. i. 
p. 61.— Relh. FI. Cant. (3rded.) p. 20. — Perry’s PI. Varvie. Sel. p. 5. — Cyperus 
longus inodorus sylvestris, Ray’s Syn. p. 426. — Johnson’s Gerarde, p. 29. f. 3. — 
Bauh. Hist. v. ii. p. 504. f. 1 . — Cyperus longus inodorus vulgaris, Park. Theat.. 
Bot. p. 1263. f. 1. in p. 1264. — Cyperus longus inodorus major foliis et 
Carina serratis, Moris, v. iii. p. 237. sect. 8. t. 11. f. 24. — Pseudo-cyperus 
palustris, foliis et carina serratis, Scheucliz. Agr. p. 375. t. 8. f. 7 — II. 
Fig. 1. A Spikelet. — Fig. 2. An inner Glume, with its Flower. — Figs. 3 ft 4. 
Two of the outer Sterile Glumes. — Fig. 5. Gerrncn. Style, and Stigmas. — Fig. C. A 
Nut, with its loose external covering. — Fig. 7. The same with the coat removed. — 
Fig. 8. Portion of the root. — All, except figs. 6, 7, & 8, magnified. 
* From clados, Gr. a branch ; in allusion to the branchy appearance of the 
inflorescence. + See fol. 50, note t, $ See fol. 436, a. 
