Mariscus.] clvi. cyperace.« (clarke). S79 



Spikelets spreading in fruit . . 23. M. sieberiamis, 



Spikelets aclpressed, erect in fruit . 25. M. suhlimis. 

 Spikelets subobtuse . . . . 31. Jf. macer. 



Spikelets with 3-2 nuts (see also M. sieheri- 

 anus, var.). 

 Spikelets white . . . - . . 30. M, tomaiophyllNS. 



Spikelets greenish- white to yellowish or 

 brownish. 

 Spikelets usually with 2 nuts. 



Spikes long-cylindric, often 1^ in. 



long ... . . 2Q. M. nossibeensis. 



Spikes usually nearly as broad as long 33. M. macrocarpus. 

 Spikelets usually with 3 nuts. 

 Glumes obtuse, submucronate. 



Spikelets subtetragonous . . 27. M. tanyphyllus, 

 Spikelets terete . . . .29. M. Mifrmecias. 



Glumes much^acuminate . . . 28. M. Fhillipsice. 



Spikelets reddish ; spikes long cylindric in a simple 

 umbel. 

 Spikelets ^ in. long, perfecting 1 nut . . 38. M. Rohlfsii. 



Spikelets \ in. long, i)erfecting 2-3 nuts . . 39. M. procerus. 



i i Subremoti. — Spikelets green, ultimately pallid ; 

 maturing 3-2 nuts. Nut-bearing glumes remote, the top 

 of one a little overlapping the base of the next . . 40, M. thomensis. 



Iff TurgiduU. — Spikelets straw-coloured to brown, thicker than in f and |f, 

 nearly terete, l-6-flov\ered. Robust plants with large compound umbels. 

 Glumes approximate, erect-adpressed even in fruit. 



Spikelets densely packed . . . . , Ail. M. rufus. 



Spikelets many, but distinct . . . . .43. M. albescens. 



Glumes less close together, looser in fi*uit. 



Leaves tlit ........ 42. M. nmbilensis. 



Leaves much enrolled (at least as seen dry) . . 44. M. dvriis. 



^f\^Flabelliformes. Spikelets linear, not flattened, dull green, 4-10-fl()wored j 

 glumes remote. 



Bracts ^ in. broad, 3-nerved ; umbel large compound . 48. M. trinervis. 

 Bracts less than ^ in. broad. 

 No horizontal rhizome. 



Spikelets |— ^ in. long, with 3-8 nuts . . 45. M. flabelliformls. 



Spikelets ^ in. long, with 5-8 nuts . . . 50. M. hiridns. 



Rhizome horizontal. 

 Leaves ^-^ in. broad. 



Spikelets \ in. long, with 4 nuts . . . 46. M. eurystachys. 

 Spikelets ^ in. long, with 7 nuts . . . 47. Jlf. aximensis. 

 Leaves \ -\ in. broad 49. M.foliosus. 



Iff If Pseudo-Cyperece. Spikelets 4-10-flowered, oblong or lanceolate, more or 

 less compressed (not linear terete). Glumes much imbricate, not (or hardly) 

 remote. 



Rhachis of spikes hairy ...... 55. M. psendopilosus. 



Rhachis of spikes glabrous. 



Fertile glunoes with long x'fcurved mucro - . .51. M. squarrostis. 



Fertile glumes with short (or no) mucro. 



