IKSTITK.K. nil 



acute, ouch 5-7-iicrve(I, first 9 mm. long, second 11 mm. long; 

 floral glume 9-11 mm. long, strongly s"iibrous, ii few luiirs nciir 

 the miirgiua at the base, linear, T-ncrvi-d. central nerve cxcurrcnt 

 below the bifid tip, au awn 6-10 mm. long; palca linear before 

 ^spreading, 7-8 mm, long. lUadcs shorter and broader than those 

 of M. Harford ii ; the panicle fewer-flowered. 



California (Kniigrant Gap), Hohoufi'r, Jiuics. 



Washington, Oregon, California. 



116. (238). KoRYCARPUS Zea. Act. Matr. (180(1): ex Lag. Gen. 

 et. Sp. Nov. 4 (181G). Diurina Kafin. Med. Itepos. N. V. .-): ll^il 

 (1808). Diarrlieiia lieauv. Agrost. 143 (181'.'). no-mcria Zea, 1{. 

 -& S. Syst. 1:61, 'ZSl (1817). Cori/rarpus Zea, Spreng. Syst. 1 : 

 123 (1825). Oiiw(t Fraiich. & Sav. Eiuun. IM. Jap. 2: 178 (1870). 



Spikelets 3-5-flowered in a narrow strict sparingly branched 

 panicle, one or two of the uppermost flowers sterile, rachilla very 

 easily articulate between the flowers. Eni])ty glumes very uui'ipuil, 

 coriaceous, keeled, first narrow, acute, 1 -nerved, second larger, 

 broader, ovate, acute or mucroiuite, 5-nerved ; floral glume broadly 

 ovate, round on the back, coriaceous, shining, 3-nervcd, the nerves 

 united at the apex in a strong abrupt or awl-shai)cd tip ; palea 

 shorter, rigid, 2-keelcd. 8tauu'ns 2, rarely 1. Styles short, dis- 

 tinct. Grain very large, o])li(piely ovoid, obtusely pointed, rather 

 longer than the floral glunu': pericarp not adlu'ritig to tlie seed. 

 Tall erect perennials witli flat Idadcs. 



There arc two species, one ])eculiar to eastern >«orth Anieiica, 

 the other to Japan ; nearly allied to J/c7/Vy/, but tlic floral glumes 

 have only three nerves aiul arc hardened round the grain, which 

 usually exceeds them, and the stamens arc reduced to two or one. 

 The ha])it is much that of the section J~'ro»H'Iic(( of the geiuis 

 Jfi'h'ri/. 



J. K. diandrus (Michx.) Kuntzc, IJev. Gen. PI. 772 (1891). 

 Festuca ditnidra Michx. Fl. Hor. Am. 1 : 67 (1803). Diarrhena 

 Americana Beauv. Agrost. 143 (1812). Kori/rarj>i(s arnndinaretis 

 Zea, Act. Matr, (1806). 



Culms erect, ujibranched, 60-90 cm. high, nearly smooth, 

 compressed, almost aolid, with running rootstocks. Ligule very 



