CYPERACEJE IN THE WELWITSCH HERBARIUM. 163 
A very distinct plant, with slender culms and leaves and the spikelets closely compacted, 
a quarter of an inch in length. The glumes are of a deep claret-colour, very finely striated, 
broadest at the apex, with a very long curved mucro, which, with the carina, is yellow. 
L. ARGENTEA, R. Br., in Tuckey's Voy. Congo, p 459. 
Pungo Andongo, ad rivulum Calunda in conyallibus rupestribus Preesidii, in medio 
Jan. 1857, no. 6778. 
Huilla, ad stagna sylvatica in sylvis mixtis de Monino, rarior, versus finem Martii 
1860, no. 6777. 
Oceurs also in Madagascar, India, Malaya, and South America. 
Г. ALBICEPS, n. вр.  Glaucescens, rhizomate repente tenui, stolonifero ; culmis singulis 
gracilibus striatis triquetris sesquipedalibus; foliis setaceis culmo brevioribus, vaginis 
fissis striatis; foliis involucralibus duobus patentibus demum recurvis, uno longo» 
altero breviore; spiculis 4 vel 5, arcte glomeratis ovatis albis; squamis parvis anguste 
lanceolatis acuminatis supra albis, basi purpuratis; squamulis duobus lanceolatis 
trinerviis; stamine uno; stylo trifido brevi; caryopsi parva ovata lanceolata trigona 
punctata fulva. 
Pungo Andongo, in pratis paludosis prope Catete cum Ascolepidibus, по. 6786; in 
decliviis spongiosis Præsidii cum aliis glumaceis et Ascolepidibus intermixta, no. 6785, 
ex parte. Sansamande, no. 6786. 
This plant, at first sight, looks like a slender form of Г. argentea, В. Br., but is dis- 
tinguished by its slender rhizome, setaceous leaves and culms, shorter ovate spikelets 
with lanceolate, somewhat spreading, glumes (very different from the almost cylindrical 
spikelets of L. argentea), and the small and narrower nut. The culms measure from 8 
inches to 15 foot. The leaves sometimes attain a length of 10 inches; the spikelets are 
4 inch in length; in glumes 14 line in length by 3 line in breadth. The latter are white 
above; but the base is dark purple or blood-red, which, however, is generally not visible 
till the glume is removed. The nut is 1 the scale in length. 
L. PURPUREO-LUTEA, n. sp. Glauca, rhizomate repente crasso lignoso ; radicibus validulis; 
culmis singulis 5—7-pollicaribus rigidis triquetris; foliis paucis rigidis linearibus 
obtusis recurvis, culmo brevioribus; vaginis integris ore membranaceis purpuras- 
centibus, vetustis multis brunneis persistentibus ; foliis involucralibus duobus vel 
tribus, demum patentibus, uno 1-14-pollicari, altero breviore, linearibus rigidis basi 
dilatatis purpuratis; spiculis 8-5 glomeratis ovatis; squamis ovato-cuneatis, acumi- 
natis striolatis, acumine dorsoque luteis, lateribus atro-sanguineis ; squamulis duobus, 
ovatis lanceolatis, uno apice purpurascente ; staminibus tribus, apiculatis, apicula 
conica, antheris fulvis, filamentis latis crassis; stylo bifido basi incrassato; ovario 
obovato; caryopsis deest. 
Huilla, in pascuis dumetosis æstate inundatis, prope Humpata, Martio 1860, no. 6784. 
This plant is remarkable for the long woody rhizome throwing up distant tufts of 
3 ' 2с2 
