360 WEEDS AND USEFUL PLANTS. 
_. Root (or rhizoma) creeping extensively, and sending — numerous suckers,—the fibro’ 
branches — terminating in tubers the size of a pea. Culm 1 to near 2 feed high, trque- 
trous, very smooth. Leaves 9-18 inches long, and 2-3 lines wide, keeled, om ooth o 
slightly scabrous on the margin, yellowish ea. 5 ne “ine prada, y—the 
on ved. inch 
asta — — lowest ones often in pairs 0. Mr fasciculate ; oblong, rather acute, 
nerved, pale tawny. les 3, united in one, distinct at ree Bay Akene triquetrous, ob- 
cy eg agape punctate. 
of streams, pastures, and cultivated grounds : New England, west and south. 
Fe 
Obs. This species is, fortunately, rather rare, in the Northern and Mid- 
dle States ; but it is said to be a troublesome plant, in the South. 
3. C. rotun’dus, L., var. Hy’ Gray. Rhizoma creeping, tuber- 
iferous ; umbel mostly simple, 3—4-rayed ; involucre 2— ue eavi ved, about 
as long as the rays ; spikes distichous ; spikelets 4— 9 on each ray, lance- 
aca acute, much compressed, 10— iottoweret dark chested potpie 
Hypra Cyperus. “ Nut-grass,” of S. Carolina. “ Coco-grass.”? 
izoma creeping,—its branches ending in tubers nearly half an inch in meter 
Gun 3-8 and 12 amin — ne smooth, naked. Leaves all oo shorter than 
the culm, about acu lightly channelled, often recurved, so _— glau- 
! “ol: ; wr at i a ay of the umbel 2- ip es long, 
erect or beige A spreading. Spikes fant a an on ie Seerante and distichous’ som the 
upper part of the rays,—the scales closely imbricated, bright chestnut-color wit es ‘a green 
eel, not nerved, slightly mucronate. Styles 3, united below, distinct at summit. Akene 
trigietro as 
sui 2 tields, sand drifts, along the Sea-coast : Virginia to Florida, and Arkansas. Fl. 
Obs. This is stated to be one of the greatest pests of the Southern 
Planters. It seems to be an inhabitant of all the 4 quarters of ins globe. 
ci: 
coming a great scourge to our planters. It shoots from the base of its 
stem a thread-like fibre, which descends perpendicularly 6 to 18 inches, 
and the: apdumes small tuber. From this, horizontal fibres Aitea: id in 
out lateral fibres to form a new progeny. This Se is Cinteomianl 
se8 it i bapsetions to see what.a chain or net-work of plants and tubers ean, 
austed and perish,—or if a fe appear the next spring, they can 
be dug up.” J. 8. Skinner, sq. in a letter written during an excursion 
i sage 
