10 CARL SKOTTSBERG, A BOTANICAL SURVEY OF THE FALKLAND ISLANDS. 



Cyperaceae. 



Scirpiis L. 



72. S. cermius Vahl (Isolepis magellanica Gaud., I. pygmsea Kunth, var. 

 brevis Brongn., Scirpus brevis d'Urv.) 



Common in moist places near the sea, round ponds and streams. E. F.: Port 

 Stanley! Sparrow Cove! Port Harriet! Arrow Harbour! North Arm! W. F. 

 Westpoint Island! — Nearly cosmopolitan. Chile, Juan Fernandez, Atacama — Fnegia, 

 S. Patagonia. 



*118. S. riparius PreSL. 



Very rare. E. F., Lafonia, pond near Low Bay ! — N. and S. America, as far 

 S. as Ushuaia! Sandwich Islands. 



Heleocliaris R. Br. 



780. H. ulbibracteatu Nees? 



W. F., wet slope on Mount Maria! Rev. G. Kukenthal is not sure of the 

 determination, as the few samples are in an imperfect state. — Juan Fernandez, S. 

 Chile — Fuegia. 



88. H. iiielanostachys (d'Urv.) Kunth. (Scirpus melanostachys d'Urv., 

 Eleocharis palustris Hook. Fl. ant., H. macrorhiza Boeck.) 



Not rare in swamps, ponds and streams (found by various collectors). E. F., 

 Port Louis! Lafonia, Mapa! Arrow Harbour! Low Bay! W. F., Mount Maria! — 

 S. Chile — Fuegia. 



Oreoboliis Gaud. 



90. O. obtusanguliis Gaud. (obtangulatus BiRGER.) 



According to Pax in Natiirl. Pflanzenfam. the genus Oreoholus has 1-flowered spi- 

 kelets, which are single and apical. I should prefer to describe the organisation as 

 foUovvs. O. obtusangulus, and as far as I know also the New Zealand species, has 

 axillary vegetative-floral shoots, ending in a terminal, 1-flowered spikelet. The 

 peduncle carries distichous leaves, of which the three uppermost are closely approached 

 and separated from the lower ones by a long, thick, slightly fusiform internode. Of 

 the three upper leaves the uppermost always seems to be empty ; of the other two 

 each embraces a 1-flowered spikelet on a long peduncle. The axillary peduncle bears 

 a basal 2-pointed, 2-keeled bracteole without lamina, and turned inward. The 

 glumes are 4 according to Gaudichaud, I have found this number on the terminal 

 peduncle, but not always, and as a rule the lateral have only 3 glumes. Stamens and 

 stigmae are well exserted. In the axils below the long internode are young shoots, 

 whose first leaf is a 2-keeled sheath. For further details, see fig. 1 — 2 on pl. I. 



