Jennings: Contribution to Botany of Isle of Pines. 53 



First glume as long as the spikelet or nearly so. 



96. Mesosetum Rotlboellioides . 

 First glume wanting or not over one-fourth the length of 



the spikelet .91. Axonopus compressus. 



Spikelets with the back of the fruit turned towards the main 

 axis. 

 Spikelets plano-convex, subsessile in spike-like racemes, 

 typically lacking the first glume (Paspalum). 

 Racemes terminal and also from the upper sheath. 



85. Paspalum pedunculatutn. 

 Racemes terminal only. 



Racemes normally in pairs, and approximate. 

 Plants with creeping rootstocks. 



79. Paspalum distichutn. 

 Plants without creeping rootstocks. 

 Both glumes obsolete. 



87. Paspalum pulchellum. 

 First glume only obsolete. 

 , Spikelets circular, 1.5 mm. long or less. 



78. Paspalum conjugatum. 

 Spikelets lanceolate or elliptic, 2 mm. 

 long or more. 

 Spikelets loosely imbricated; spikes 

 ascending. ...81. Paspalum Neesii, 

 Spikelets densely imbricated; spikes 

 spreading. 

 Spikelets 2 mm. long. 



82. Paspalum minus. 

 Spikelets 3 mm. long. 



84. Paspalum, notatum. 

 Racemes i to several; if 2, the lower at some 

 distance below the terminal and the number 

 not constant. 

 Raceme usually i, sometimes 2. 

 Spikelets transversely wrinkled. 



Blades involute, glabrous, elongated, 

 40-60 cm. long. 



80. Paspalum filiforme. 

 Blades flat, pubescent, 5-15 cm. long. 



83. Paspalum nanum. 

 Spikelets not transversely wrinkled. 



88. Paspalum Rotlhoellioides. 

 Racemes more than i, often numerous. 



Sterile lemma transversely wrinkled; spike- 

 lets brown 86. Paspalum plicatulum. 



Sterile lemma not transversely wrinkled. 



