462 POACE.E. 



107. (201). SIEGLINGIA Beruh. Syst. Verz. Pfl. Erf. 40 (1800). 

 Triodia R. Br. Prod. 182 (1810). Tricnsjns Beauv. Agrost. 77, t. 

 15, /. 10 {1812). Triplas is Beaux. Agrost. 81, t. 16,/. 10 (1812). 



Spikelets several- flowered, paniculate, rachilla articulate above 

 the empty glumes and between the florets, hairy round them orgla- 

 Tarous, flowers perfect or the upper ones male. Empty glumes firm, 

 acute, unawned, 1-3-nerved, keeled, glabrous or the keel, scabrous- 

 ciliate; floral glume unawned, the lower part rounded on the back, 

 more or less 3 -nerved at first, often hardened and nerveless in fruit, 

 with 3 terminal 1-3-nerved lobes or teeth; palea broad, about as 

 long as the entire part of its glume, witli two prominent nerves. 

 Stamens 3. Ovary glabrous, styles very short, distinct. Grain 

 somewhat dorsally compressed, enclosed by glume and palea but 

 not adherent. 



Perennial grasses, often firm and branching or stoloniferous at 

 the base; blades narrow, firm, often involute. Panicles narrow 

 and simiDle, with few spikelets, or ample like those of many species 

 of Eragrostis. Spikelets mostly erect. 



There are about 20 species, mostly found in temperate regions of 

 Europe, America, Africa, Australia. It has the typical characters 

 of the tribe without the peculiarities of the other genera, the lobes 

 of tlie floral glume reduced to short teeth or points, or the central 

 one sometimes lengthened into a short awn. 



Four sections have been proposed : 



1. Isotria, — three lobes of the floral glume narrow, lanceolate, 

 and equal. 



2. Uralepsis {Sieglhigia 'Beruh., Men'aachne Tr'm.). — the lateral 

 leeth of the glumes broad and not pointed, and sometimes very 

 minute. 



3. Triciispis Beauv, ( Windsoria Xutt.), — nerves of the lateral 

 teeth produced into short jooints. 



4. Leptocarydion Hochst., — tlie deuse soft panicle almost of 

 Tricldoris, but with the spikelets of Triodia. 



A. Second empty glume 3-nerved 1, 2 



B. Second empty glume 1-nerved (a) 



a. Floral glume 2-3 mm. long (b) 



