Cee 
105 
‘mg ANTARCTIC ALGA. 
< 
“e By A. anp E. S. Gepp. 
j aoe 470. ) 
, cated to us by Mr. R. N. Rudmose Brown. The South Orkneys lie 
about 45° W. long. and 61° S. lat.; they are shasditits cited 
outside the antarctic circle, and far to the south-east of Cape 
No alge have hitherto been recorded from these islands s, so far as ia 
are aware, the nearest being from South Georgia, and described by 
P. F. Reinsch in Neumayer’s Inter nationale We eee cane 1882-3: 
Die Deutschen Expeditionen, Band ii. (1890), pp. 866-449 
There are but twelve species in the Ah. list ; four of them, 
however, are new to science, one representing a new genus. One 
of the species has been recorded hitherto only from South Georgia, 
and most . the others are known from the Falklands and Cape 
Horn. Of the four novelties, two were brought back by the British 
Antarctic expodit lon a. 
CHLOROPHYCER. 
- Monostroma endiviefolium, n. sp. Thallus vipa sub- 
nigreaal i membranaceus, callo vix ullo, mox expansus, 
maxime et — a haud Jenteaiiis parvus, 2-4 em. 
altus et rassus ; Cellulis geminis vel quaternis, in 
sectione thalli transversali verticaliter rectan ngularibus, angulis ro- 
cs cellulis basalibus longissime caudatis 
ore pools and get at low tide, No. 10, Feb. 4, 
1903, “Saddle Island, South O 
The nearest allies of M. satievafotvin are M. Blyttit Wittr. and 
M. splendens Wittr. From M. Blytii it differs in having an ex- 
pare hte a not lacerate, frond, and in being smaller. ae 
cells of M. endiviefolium seen in sass view are more widely 
se separate than those of M. Blyttii, From M. splendens it differs in 
colour, in not being coriaceous, in its corenanes size, thicker thallus, 
and longer narrower Cells as seen in sectio 
Reinsch, in his list of South Georgian _Alew (p - 420), quoted 
above, denesibes a new variety macrogyna of Tea’ 2 actuca. is 
of M. appro It is broad, large and flat like Ulva Lactuca, 
and the size of is cells is much smaller than that of our plant. 
If we r a rd var. macrogyna as a Monostroma, ee two plants are 
aa 0, 
. Lessonia grandifolia, n. sp. Callus radicalis dense et irre- 
calnstian ramosus, coriaceus. Stipes valde compressus, marginibus 
JournaL or Botany.—Vor, 48. [Aprm, 1905.) 1 
