nvriQ-^ liORTUS J A MAI C ENS IS. 127 



This has a fibrous root, which sencU out many trailing, round, }'ellowish c\ilms, about 

 a foot and a half long, the joints an inch aiiri a half disiunt, at each of wliich is a leaf 

 sheatlring the inlernodes, two or threo inches long, green-coloured, and harsh like 

 those of the carex. At the top stands an inch and a half long spike, set round with 

 small burs, at intervals, having on every side strong sharp prickles, Ijcing first green 

 thea of a straw-colour. It grew at Gun Cayos, off Port Royal harbour. Sloane. 



3. ORAN'ULARlSi GRAINED. 



G'rawev ryperou/cs polysfachwn, spicis ad nodos ex utn'cidis sen folio- 

 rum alts echinatis prodcuntibus. Sloane, v. 1, p. 120, t. 80. 



Racemes double ; fruits globular, wrinkle-netted. 



TliKXAXiiC manisuris granular is oi ^wzn?,, who gives its specific character, as fol- 

 lows: Spikes lateral, outer-valves orbicular, with callous dots ; sheaths hairy; culm 

 erect. 



It has several two or three inches long strings as roots, from v/lience rises a jointed 

 stalk, three or four inches high, solid, triangular, or flat on one side and round on the 

 other. That part of. the leaf sheathing the internodes is rougli or prickly, the other 

 part harsh, grassy, with a sharp back like the cyperus grasses, and about half an inch 

 broad, next the culm, where broadest. Towards the top, the leaves, which are always 

 at the joints, are shorter and more swelled, having a row of prickles on the back. Out 

 of the alffi ri>e branches below and small footstalks above, sustaining one, two, three,, 

 or four inclics and a half long, green spikes, made up of" small seeds, standing each 

 above a very small, scarce discernible leaf. Sloane. 



4. SETOStJS. BRISTLY. 



Spike linear-oblong ; involucres bristly ; bristles unarmed, the interior ones- 

 yiliose at the base ; hairs ciliate ; glumes even. Sw. Pr. 26. 



Burn Weed See Thorn Apple. 

 Button Tree See Alder Tree. 



BUTTON WEED. SPERMACOCE. 



Cl. 4, OR. 1. Tetrandria vionosynia. Nat. or. Stellatte. 



This is so named from two Greek words signifying a sharp pointed seed, these plants 

 "having prickly seeds. 



Gen. char. Calyx a small four-toothed perianth, superior, permanent; corolla',, 

 one-petalled, funnel-shaped, border four-parted; stamens awl-shaped, shorter 

 than the corolla ; anthers simple; the pistil has a roundish germ, simple style, 

 but cloven above, stigmas obtuse ; the pericarp is two capsules, connate, oblong, . 

 gibbous on one side, flat on the other, obtuse ; each two-horued ; seeds solitary, 

 roundish. Five species are natives of this island. 



1. TENUIOR. SLENDER. 



Scandens, foliis ohtongis venis arcuatis refertis, Jioribus paucicribus 

 constipatis ai alas. Browne, p. 141. 



Smooth; 



