41 
A NEW NITELLA. 
By James Groves, F.L.S. 
ene 536.) 
area, in the Se of Algarve, which forms the extreme southern 
portion of Portugal. In each of the ioeatitics the water was 
shallow. The plant was dicecious and both sexes were collected. 
a nd 
they oe to belong to a new acon of the group Polyarthro- 
tella Dixonii, H. & J. aieves sp. nov. Sectio Nitelle 
Polyorthrciaenes Diacia, Braun. Statura mediocris. Caulis 
usque ad 525 » crassus. Verticilli steriles ut etiam verticilli 
fertiles inferiores quam internodis breviores. Verticillorum ramuli 
pq. 8, bis-, ter-, interdum quater-furcata sed r adiorate secundari- 
orum ramuli nonnulli, et radiorum tertiariorum plurimi, simplices. 
Radii primarii circ. 2 totius ramuli longitudine. Radii ad furcam 
eave no ips m fertilium 4-5, nodorum sterilium 5-7, quum 
denuo furcati cir rimariorum radiorum longitudine, quum 
3 P 
guinea ae soseat: ad furcam secundam 4-5, quum denuo 
fureati, breves, quum simplices, elongati; ad farcam tertiam ‘3-4 
valde ineequales ; ad furcam quartam, quum quidem presentes pq. 
uartarii, aut quinarii inzquales, sed seepe elongati, 3-5- (pq. 4-) 
cellulati, cellule infimse pq. magnopere extense, superiores 
adatim di iminute sed cellule penultime haud brevissime. 
Gellula ultima brevissima conica acuta, ad basin quam um 
oe cacumene tigger angustior. Antheridia sepe gem 
nata, ad secundam, ad primam interdum, furcam pete ; 
diametro 325-410 p. Tree solitarii 475-550 p longi, 360-410 p 
lati, in furcis omnibus, sed in furea prima raro positi. Oospora 
complanata, cire. 390 plo nga, 270 p lata, 230 » hes ae liras 
tenues prominentes 8-9 exhibens. Coronula m 
A slendet 
similar to those of N. itnonoda In the form froin ¢ water- 
2 ; ; 
ee OF Bowne: oe: “a: [Fepruary, 1915.) & 
