GENUS 84. 



GRASS FAMILY. 



247 



3. Melica Porteri Scribn. Small Melic- 

 grass. Fig. 593. 



Melica mutica var. parviftora Porter; Porter & Coulter, 



Fl. Colo. 149. 1874. 

 Melica Porteri Scribn. Proc. Acad. Phila. 1885 : 44. pi. 



i. f. 17, 18. 1885. 

 M. parvifiora Scribn. Mem. Torr. Club 5: 50. 1894. 



Culms ii-2j tall, erect, simple, smooth and 

 glabrous. Sheaths short, overlapping, more ^or less 

 rough; ligule i" long; blades $'-9' long, i"-2" wide, 

 rough; panicle $'-7' in length, contracted, the 

 branches erect, the lower i'-2 r long; spikelets few, 

 4-5-flowered, s"-6i" long, nodding, on somewhat 

 flexuous strongly pubescent pedicels ; lower scales 

 obtuse or acutish, the first shorter than the second, 

 which is much exceeded by the spikelet ; flowering 

 scales 3i"-4" long, acutish, scabrous. 



Cliffs and hillsides, Iowa to Missouri, Colorado, Ari- 

 zona and Texas. 



85. KORYCARPUS Zea, Act. Matrit. 1806. 

 [DIARINA Raf. Journ. Bot. 2: 169. 1809.] 

 [DIARRHENA Beauv. Agrost. 142. 1812.] 



Erect grasses, with long flat leaf-blades and narrow paniculate or racemose inflorescence. 

 Spikelets 3-5-flowered, the rachilla readily disarticulating between the flowers. Upper scales 

 empty, convolute. Two lower scales empty, the first narrow, 3-nerved, acute, the second 

 broader, 5-nerved ; flowering scales broader than the lower ones, acuminate or mucronate, 

 rounded on the back, finally coriaceous and shining, 3-nerved. Palet 2-keeled. Stamens 2, 

 rarely i. Styles short, distinct. Stigmas plumose. Grain beaked, free. [Greek, in allusion 

 to the beaked grain.] 



Two known species, the following North American, the other Japanese. Type species : Kory- 

 carpus arundinaceus Zea. 



i. Korycarpus arundinaceus Zea. American Kory- 

 carpus. Fig. 594. 



Festuca diandra Michx. Fl. Bor. Am. i : 67. pi. 10. 1803. Not 



Moench, 1794. 



Korycarpus arundinaceus Zea, Act. Matrit. 1806. 

 Diarrhena amcricana Beauv. Agrost. 142. pi. 25. f. //. 1812. 

 Korycarpus diandrus Kuntze, Rev. Gen. PI. 772. 1891. 



Culms i4-4 tall, erect, simple, very rough below the 

 panicle. Sheaths overlapping, confined to the lower part 

 of the culm, smooth or a little rough at the summit, some- 

 times pubescent; ligule very short; blades 8'-24' long, 5"~9" 

 wide, long-acuminate at the apex, usually scabrous; panicle 

 often reduced to a raceme, 2'-7i' in length, the branches 

 erect, i'-2' long; spikelets 3-5-flowered, 6"-8" long, the 

 lower scales unequal, the first shorter than the second, 

 which is much exceeded by the spikelet; flowering scales 

 somewhat abruptly acuminate ; palets shorter than the 

 scales and exceeded by the beaked grain. 



In rich woods. Ohio to South Dakota, south to Georgia and 

 Texas. Aug.-Sept. 



86. PLEUROPOGON R. Br. App. Parry's Voy. 289. 1824. 



Erect grasses with flat leaf-blades and racemose inflorescence. Spikelets 5-14-flowered ; 

 flowers perfect, or the upper staminate. Two lower scales empty, unequal, thin-membranous, 

 i-nerved, or the second imperfectly 3-nerved ; flowering scales longer, membranous, 7-nerved, 

 the middle nerve excurrent as a short point or awn. Palet scarcely shorter than the scale, 

 2-keeled, the keels winged or appendaged. Stamens 3. Styles short. Stigmas plumose. 

 Grain free, enclosed in the scale and palet. [Greek, side-beard, from the appendages to the 

 palets.] 



Three known species, the following arctic, the others Californian. Type species : Pleuropogon 

 Sabinii R. Br. 



