256 Plants Collected m Paraguay. 



With slender stems 2-6 dm. high. Spikelets in lateral axillary 

 clusters on long peduncles, or in terminal long peduncled panicles, 

 3-5 in a cluster, ovoid. Glumes chestnut colored. Radical leaves 

 one-third as long as the stem or shorter. 



Ryucliospora corymbosa (L.), Britton, Trans. N. Y. Acad. Sci., 

 xi, 84. 



Villa Rica (559). January. » 



Stems triquetrous, 20 cm. or more in height, having at the stim- 

 mit a large, loosely spreading 2 or 3 times compound panicle of 

 spikelets, twice as long as the stem and spreading for 25 or 30 cm. 

 This is composed of 2 or 3 fascicles of umbels 4-6 cm. apart ; the 

 uppermost the largest, its rays 10-15 cm. in length; raylets 3-5 

 cm. long, and often again divided into shorter branches. Fascicles 

 subtended by 1-4 foliaceous bracts, 1 of them 10-40 cm. long. 

 Spikelets 2 or 3 in a cluster, at the ends of the ultimate divisions. 

 Glumes chestnut-colored. A very striking plant. In wet places. 



Ryncliospora glaiica, Valil, 1. c, 233. 



Luque (300). December. Named by C. B. Clarke. 



Rynchospora scalierrinia, Boeck., FL, 1860, p. 452. 



Luque (311); Gran Chaco (1565). December-February. Named 

 by C. B. Clarke. 



Spikelets in several compound umbelled fascicles along the stem, 

 the uppermost largest, all with numerous umbels, and subtended 

 by foliaceous bracts much larger than the flowers. Leaves firm, 

 8-13 mm. wide and longer than the culm, very rough. A coarse 

 species with rough, triquetrous stems 3-12 dm. high. Spikelets 

 narrow lanceolate, acute, 3-5 mm. long, 3-12 or more in a cluster, 

 dark chestnut-colored. 



Ryncliospora tenuis, Link, Jalirb., iii, 76. 

 Luque (1566). December. 



Ryncliospora Urbani, Boeckl., Cyp. Nov., i, 26. 

 Luque (560). December. Named by C. B. Clarke. 



Scleria liirtella, Sw., Fl. Ind. Occ, i, 93. 

 Caballero (424). January. 



