174 |. Dx. Goopenoven’s Olfervations 
" Gramen paluftre echinatum. Ger. 17. Park, 1187. | 
Fl Suecica, n. 943. Leers, t. 15. f. 6. FL Dan. 1047. Fi. 
Angl. 407. Fi. Scot. 551. Withering, 1037. 
Habitat in paludofis paffim. Maio, Junio. 
Radix repens, perennis. Fota amoené viridia, ad margines cari- 
namque afperiufcula, culmo longiora. Culmus erectus, triqueter, 
angulis acutis, glabris, altitudine varius, uncialis, pedalis, & ultra, 
Spice una mafcula, tres fœmineæ—Spica maícula terminalis, fubli- 
nearis, ereéta, femuncialis-uncialis, fub-triquetra; fquamis ovato- 
oblongis, obtufiufculis, fulvis, nervo dorfali viridi. Spice fœ- 
minez modo omnes ad fummitatem culmi congeftz ; modo inferior 
remota, ceteris prope mafculam congeftis, modo, quod fæpe acci- 
dit, omnes a fe invicem remotz, fubrotundz, fed variant & præ- 
fertim inferior, oblongz, pedunculo vagina fuà pauló longiori. 
Squamz fere ut in mafcula, capfulà breviores—Ad bafin omnis pe- 
dunculi bra&ea, f. folium vaginans, vagina pedunculi longitudine. 
Veruntamen eft ubi pedunculus inferior, precipué cum remotus 
fit, vaginam fuam fere dimidio fuperat. Vagina in foliolum abit, 
culmo longius, divaricatum. Cap/ula fub-triquetra, ovata, roftrata, 
roftro fæpe fub-reflexo, ore plerumque indivifo, & ad bafin fpicæ, 
ex rotunditate f. contraétione receptaculi, deorfum fpeétans.  Fi/a- 
menta ut in ceteris. Svy/us ftigmatibus tribus. 
Of. Variat fed rariüs fpicis mafculis duabus, tum culmi angulis 
afperiufculis. | 
The long divaricated foliaceous bractea is a very conftant difcri- 
minating mark in this fpecies : this, together with its round prickly 
heads, renuer the inveftigation perfectly eafy. 
It - 
