СУРЕКАСЕЖ IN THE WELWITSCH HERBARIUM. 131 
Benguella, in humidis arenoso-argillaceis inter rivum Cavado et flumen Catumballa 
jam fere penitus defloratus, Junio 1859, no. 6894. 
Pungo Andongo, in paludosis inter Candumba et Lombe, Martio 1857, no. 6909 ; Muta 
Lucala, Condo, Martio 1857, no. 69098; in collinis rupestribus breviter dumetosis eum 
Actinopteride radiata, semper strictis culmis, Januario 1857, no. 6909 0. 
Наша, in arvis post Zee Maidis plantarum collectiones frequens, Lopollo, in hortis de 
Signor Kneissmann, Maio 1860, no. 6895. 
. A common and widely distributed tropical weed. 
C. CANCELLATUS, n. sp. Czespitosus, radicibus crebris; culmis subpedalibus triquetris 
canaliculatis ; foliis linearibus acuminatis complanatis glabris; culmis parum brevi- 
oribus; vaginis tenuibus fissis purpureo-punetatis; involucralibus 2-3-linearibus, 
acutis, uno biunciali; umbella diffusa plerumque decomposita, radiis gracilibus valde 
inzequalibus teretiusculis, ocreis longiusculis, ore obliquis purpureo-punctatis; spiculis 
patentibus 1—5-linearibus trilinealibus, 15—20-floris; squamis ovatis obtusis breviter 
mucronatis remotiusculis squarrosis, mucrone recurvo ; carina viridescente punctata, 
lateribus sanguineis ; rhacheola tenui flexuosa, foveolis angustis oblongis ; staminibus 
3, filamentis longis, antheris brevissimis ovato-oblongis ; stylo gracili breviter trifido 
rufo; caryopsi minuta subglobosa trigona, squama plus quam duplo breviore, alba 
cancellata. 
Pungo Andongo, in spongiosis inter Muta Lucala et Lombe, March 1857; ad ripas 
rivulorum prope Cabondo ipsius Preesidii, no. 6916; in pascuis depressis uliginosis 
ipsius Presidii, frequens in oryzetis ad rivulum Miege (Miesche) prope Caghuy, Febr. 
1857, no. 6917. 
Var. GRACILLIMUS. Planta flaccida gracillima ; culmis tenuibus; foliis angustioribus 
semilineam latis; spiculis paucioribus 2-3 raro 1 vel 4, semiuncialibus, squamis 
pallidioribus, mucronis longioribus ; ocreis fissis. 
Huilla, in spongiosis breviter herbidis sylvarum mixtarum de Monino, at sparsim, 
initio Maii 1860, no. 6862. : 
Nearly related to Cyperus flaccidus, В. Br.*, but easily distinguished by the form of 
the nut, which is acutely triquetrous in that species, but much smaller, almost globose, 
and cancellate in this. When the white outer coat of the nut is rubbed off, the seed 
appears to be dull red. The leaves of the typical and common form are hardly one line 
in diameter; the rays of the umbel vary from about 1 line to 3 inches in length ; the 
culms are from 8 inches to a foot high. 
С. AMNICOLA, Kunth, Enum. ii. 52. 
Huilla, in uliginosis exsiccatis prope Nene, Maio 1860, no. 6878. 
A native of 8. Africa. 
* A native of Australia. 
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