No. 86. 



COLPODIUM PENDULINUM (Last) Griseb. in Ledeb. Fl. Boss. iv. 386 

 (1853); Glyceria pendulina Last, in Wahlenb. Fl. Suec. ii. 1088 (1824-26). 



Plant x>erennial, «soinewhat tufted, from a creeping rootstock. 



Culms erect or slightly geniculate, clothed throughout with the numerous over- 

 lapping sheaths. 



Leaves of culm 6 to 10, with close, smooth, striate, usually overlapping sheaths; 

 flat, smooth, striate, rather thick and rigid, slightly spreading blades 1£ to 2 lines wide, 

 4 to 8 inches long; ligule membranaceous, truncate, 1£ liues loug or less. 



Inflorescence a pyramidal panicle 4 to 6 inches long; rays mostly in pairs, often 

 divided so as to appear like fours, at the 6 to 8 nodes of the slender, smooth, common 

 axis, spreading or usually deflexed at maturity, smooth, flexuous, divided beyond the 

 middle and bearing few spikelets often pendulous on the short pedicels. 



Spikelets oblong, loosely 5- to 8-flowered, about 3 lines long; first empty glume ob- 

 lanceolate, barely acute, smooth, 1-nerved, 1^ lines long; second empty glume broadly 

 rhombic -ovate, smooth, obscurely 3-nerved, 1^ lines long; floral glume obovate, erose 

 at the thin, membranaceous apex, smooth except a few hairs at the base, obscurely 3- 

 nerved, 1 to 1| lines long and about as wide; palet obovate, erose, 2-lobed above, 

 smooth on the 2 rather obscure nerves, slightly hairy at the base, less than 1 line long; 

 grain linear, reddish brown, 1 line long; lodicules present, rather small and obscure; 

 internodes of the zigzag rachis smooth, about £ line long. 



Plate LXXXVI ; a, spikelet enlarged ; b, floral glume ; c, palet opened ; d, instil 

 and lodicules. 



Arctic America, Siberia, and Lapland. 





