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# 



136 



Curtis^ $ Enumeration of 



corol, the exterior half tlie size of the other, very acute, 

 nerveless except the midrib, the interior 6 nerved (5-7 

 nerved?); Sterile flower of two nearly equal valves, 

 acute, pubescent under a lens, exterior 5 nerved, interior 



2 nerved, enclosing three filaments; valves of the perfect 

 flower rigid, outer ^one longest, enclosing the inner, ob- 

 scurely 5 nerved, inner one enclosing the seed, obscurely 



3 nerved ; Styles 2 ; seed obovate, obtuse. 



In a careful comparison of this plant with C. echinatus 

 and tribuloides I find no difference in their flowers. The 

 involucrum is less spiny, naked at the base, spines shorter, 

 and the plant more robust. I found it preserving its 

 character throuo;h two seasons, and for distinction's sake 

 have imposed a trivial name upon it, but am far from 

 being certain that it is more than a variety of C. echinatus. 



Found at Smithville in cultivated fields. It approaches 

 nearer to C. tribuloides than C. echinatus. 



\ 



(45) Fe 



Stem 2^ feet high, round, 



J- 



very smooth; Lower leaves 18 inches long, 1-2 lines 

 wide, carinate, slightly scabrous, and with elevated nerves 

 on the upper surface ; Sheaths not half as long as the 

 joints ; Panicle erect, secund, with short, racemose 

 branches; Spikelets linear lanceolate, compressed, 9-12 

 flowered ; Calyx unequal ; Exterior valve of the corol 

 3 nerved, acute ot with a short awn, interior valve 



emarginateb 



May 



Mink Island, Masonborou 



o 



with F, elatior- Neither of them are found on the main, 

 to my knowledge. 



(46) Liimnetis jincea 



Stem about 



3 feet high; Leaves 8-12 inches long; Spikes 3-6, 

 about their length distant from each other ; Style 2 cleft 

 like L. cynosuroides. In every other particular acrreeing 



