42. Hymen ACHNE.] 139. GR AMINE M. 



late gradually tapering into the awn as long as spkt., exceeding ii, 

 strongly 3-nerved, hispidulous on nerves ; iv narrow and finely acumi- 

 nate almost embraced by iii, shorter than ii, about -14", enclosing its 

 palea on the edges. Anthers -05". Styles distinct. 



Marshes. Santal Parg., J/oAi>« ! Also Jalpaiouri and probablj- Purneali. Fr. 

 Oct.-Nov. 



Rhachicles of partial panicles broadly winged, subsidiary rliacliides less winged 

 or margined, margins hispid, branchlets secund. Pedicels 1-3-nate, "Ol-'Oi" long. 

 Internode of rhachilla between gl. ii and iii -OS-'Ol" long. 



43. PANICUM, L. 



{sensu circumscripto). 

 Grasses of various habit and duration. Spikelets symmetrical, 

 articulate on the usually elongated pedicels of a much divided, at 

 least temporarily open, panicle ; branches of panicle free (not adnata 

 into a false spike), orientation of spikelets to axis indefinite. Glumes 

 herbaceous-membranous, i shortest, often minute, very rarely as 

 long as ii ; ii as long as spikelet, rounded on the back, 5-9-nerved ; 

 iii very similar to ii, 5-9-, rarely 3- or 11-nerved, palea subequal or 

 reduced, rarely ; iv subcoriaceous to coriaceous with firm margins, 

 obtuse to subacute, muticous, faintly nerved or not, palea similar in 

 texture tightly embraced by margin of the glume. Lod. 2, broadly 

 cuneate. St. 2. Styles distinct. Grain tightly enclosed by the 

 hardened glume and pale, biconvex to almost plano-convex. 

 I. Gl. ii 9-11-nerved, or if 7-u. then iii 7-9-n. :— 



A. Gl. iv smooth and polished :— 



1. Spkts. •1J<-'17" long, mostly rostrate : — 

 Leaf-sheaths hirsute with spreading hairs. Panicle 



usually dense. Cultivated only 1. miliaceum. 



2. Spikelets •08-"12" long (•1-1" in pt-oliferum, 'S" in a 



diseased state of j^Mopodium) -. — 

 o. Spikelets not gaping :— 



i. Annual, not stoloniferous. Gl. i 5-nerved : — 

 i Stems slender. Leaves linear : — 

 Leaves without long tapering upper half. 

 Panicles quickly effuse. Gl. iv 'O?". Wild 



only 2. psilojJodinm. 



Leaves narrow tapering from the base or Avith 

 tapering upper half. Panicle contracted, 

 nodding. Gl. iv 'OS-'l". Cultivated . . 3. miliare. 

 ■it Stems up to "3" diam. at base. L. lanceolate- 

 linear with subcordate base : — 

 Panicles sub-thyrsiform. Spkts. "OS-'OO" . . 4. ctesium. 

 ii. Perennial. Stems below creeping or stoloni- 

 ferous :— 

 Spkts. "l-'ll". Pedicels glabrous with small 



cupular tips 5. repens. 



Spkts. •12-11''. Ped. angular scabrid, tips clavel- 



late truncate 6. prolifencm. 



h. Spikelets gaping: — 



Panicle open. Spkts. "12". Gl. i 4-5-nerved ; ii 

 cuspidate 7. trypheron. 



B. Gl. iv finely rugulose :— 



Spkts. •12-*15" long. Very large perennial. Cultivated . 8. maximum. 

 II. Gl. ii 5nerved, or if 7-n. then iii 5-nerved: — 



A. Panicle very effuse lax with capillary branches and pedi- 



cels:— 

 Spkts. '07-*l". Height 3-4 ft. L. lanceolate . . . 9. nwufanum. 

 Spkts. 'OS-'Oe". Height 2-15". L. linear . . . . 10. humile. 



B. Spikelets fascicled subsecund sessile or sliortly pedicelled 11. auritum. 



992 



