318 POACE.E. 



uhout tlie Siinie liMifftli. o-iiervcd. sliort-awiiod on tlio buck noar tlie 

 apex; jnilea nearly as long as ils gliinu', 'J-nerved or the nerves united 

 as one. Stamen 1 (2-;5 in C. Bolanilvri). Styles short, distinct. 

 Grain linear, oblong, inclnded, but not adherent. 



Tall perennial grassi'S with Hat leaf-blades. 



Bentham says:- *• They have the tall reedlike habit of the large 

 species of CalaiiKifjrosfis, but with a glabrous rachilla and thepalea 

 with one nerve; the latter is a very remarkable character for the 

 tribe. They have but one stamen to the ilower. Several other 

 grasses of America have been published as siiecies of China, but are 

 now referred to Kpintmpes or /)c>/eH.n'((." 



There are three species, two of which are common to Northern 

 Europe and North America. 



Spikelets 5-0 mm. long 1 



Si)ikelet3 3-3.5 mm. long , . . 2 



Spikelets about 3 mm. long, var. glomerata of numlier . . ;.* 

 Spikelets 4.5-5 mm. long, floret sessile .3 



1. C. arundinacea L. Sp. PL 5 (1753). Afjrosiis cinna Lam. 

 111. AiU'l (1701). MKhleitherriia riiuin Trin. Diss. 1 : 191 (18;U). 

 M. pi'iiilul(( r>ong. Vasey Monog. 1. c. (1893). Hhjttia suavcolens 

 Fries, Mant. 2:2 (1839). 



Culms smooth, stout, simple, erect, 90-200 cm. high. Sheaths 

 mostly shorter i ;in the 5-7 internodes; blades flat, nearly smooth, 

 15-20 cm. long, 10-13 mm. wide. Panicle 15-40 cm. long, rays 

 smooth, in clusters of 3-U, flower-bearing mostly above the middle. 

 Spikelets green or purple, 5-6 mm. long, first 4-5 mm. long, sec- 

 ond IJ-nerved, 5-0 mm. long; floral glume 4.5-5 mm. long, awn 

 obsolete or manifest. 



Northern States entirely across the continent. 



Michigan, Cooh'ij, Clark 094, Ikal 02, 03, 04; Massachusetts, 

 Slnrtevant. 



Swamps and moist woods. 



3. C. latifolia (Trev.) Griseb. Ledeb. Fl. Ross. 4:435 (1853). 

 Agrosfis JafifoUa Trevir. Goppert, Besclir. ]iot. 83 (1830) ap. 

 Griseb. Mahlcnhergia 2)e»(/ah( Bong. Veg. Sitch. 173 (1833). 

 Cinna penduUi Trin. Mem. Acad. St. Petersb. (VI.) 6: 380 (1841). 



