FESTUCE^. 559 



"delicately membranoas, unawncd, distinctly hairy at the base. 

 Ovary glabrous. In other respects, the sume us Colpodium. 



There is one, possibly two, species which belong to the Arctic 

 regions. 



1. D. Fiiheri R. Br. 1. c. 



A smooth erect grass, 15-25 cm. high. Ligule obtuse, 1-1.5 

 mm. long; blades flat or concave, 4-10 cm. long, 2-3 mm. wide. 

 Panicle simple, shining, yellowish purple, in- 

 terrupted, 4-7 cm. long. Spikelets 2- (rarely 

 3-) flowered, joint of raohilla 1.5 mm. long; 

 empty glumes soft, tliin, membranous, first 1- 

 iierved, 5 mm. long, second 3-6-nerved, 7.5 

 mm. long; floral glume puberulent, broadly ^^pi}h^j^~^^^l^i 

 ovate, acute, 3-nerved, 4.5-5 mm. long; palcu a (Riclmrdson.) 

 little shorter, hyaline, 2-toothed. 



Hudson's Bay near Bering Straits, R. Bell, Wnght in 1853-6; 

 Pt. Barrow, Prof. Murdock 88 in 1882. 



Arctic coast to Hudson's Bay. 



2. D. psilosantha Kupr. Fl. Samoj. Cisural. t. 6(1848). 



A smooth erect grass, 20-40 cm. high. Ligule obtuse, 2-3 

 mm. long; blades concave. Panicle simple, 7-12 cm. long, rays 

 spreading. Spikelets 1-2-flowered, G-7 mm. long; empty glumes 

 equal, 1-nerved; floral glume a little shorter, 3-nerved. 



Behring Sea collection, Macoun 40. 



129. (258b). SCOLOCHLOA Link, Ilort. Berol. 1:136 (1827). 

 ^''luminia Fries, Summ. Veg. Scand. 247 (1846). 



Spikelets 3-4-flowered, subterete in a loose or narrow ample 

 panicle, rachilla articulate between the flowers. Empty glumes 

 membranous, unequal, apex toothed, flrst 3-nerved, second 5- 

 nerved; floral glume rigid, not keeled, 7-nerved, toothed at the 

 apex, callus hairy. Anthers 3. Ovary hairy; stigmas subsessile. 



There are two tall perennial species found growing in water in 

 the northern temperate zone of both hemispheres. 



1. S. arundinaoea (Lilj.) MacMillan, Metasp. Minn. Vol. 1: 79 

 (1892). FesUica arundinacea Lilj. Sv. Fl. Ed. 2. 2:47(1792). 



