1 60 G r amine ce. \Pankumr 



branous, I half as long as III, ovate, obtuse, or subacute,,. 

 3-veined, II and III strongly 5-veined, II shorter than IV,. 

 nearly orbicular, obtuse, III as long as IV, broadly ovate,,, 

 acute, paleate, empty, palea very small, IV sessile, oval- 

 lanceolate, acute, laterally subcompressed, dorsally very 

 convex, obscurely keeled, quite smooth, thinly coriaceous,, 

 margins strongly incurved ; grain small, obovoid, plano- 

 convex. 



Dry region in the Northern Province. Kokkulai (Heyne, Jany, 23^ 

 1796). Spikelets greenish-brown. 



There are two specimens of this very delicate grass in Herb. Peraden. 

 without habitat, date, or collector's name, marked C. P. 886 in Thwaites's 

 writing, which number properly belongs to P. trigonnm. The minute 

 spikelets are perhaps hardly sufficiently laterally compressed to place 

 this grass in the section with P. trigonum and its allies. I have 

 accordingly in the Key to the species referred to it under the section: 

 Effusce. 



42. P. uneinatum. Radaz, Agrost. Bras. 41 (1823). 



Thw. Enum. 359. Echinolce?ia polystachya, H. B. and K. Nov_ 

 Gen. and Sp. i. 119. C. P. 710. 



Fl. B. Ind. viii. 58. Trin. Sp. Gram. Ic. t. 216. H. B. and K. I.e. 

 vii. t. 679 {Echinolcend). 



Perennial; stem 1-2 ft, slender, decumbent and rooting 

 below, then ascending, simple or sparingly branched, leafy, 

 lower internodes \-\ in., upper longer, nodes pubescent, lower 

 emitting long solitary filiform roots; 1. 2-3 in., spreading,, 

 ovate-lanceolate, acuminate, thin, flat, sparsely pilose on both 

 surfaces with tubercle-based hairs, base narrow, margins 

 scaberulous, veins obscure, sheath pubescent, margins ciliate, 

 ligule short, truncate, membranous ; panicle 3-6 in., long- 

 peduncled, contracted, rhachis slender, quite smooth, branches 

 few, distant, alt, erect, filiform, few-fid., lower an inch long, 

 upper shorter; spikelets \ in., gibbously ovoid, laterally com- 

 pressed, sessile or pedicelled, erect, binate or solitary with a 

 lanceolate bract-like glume (imperfect spikelet) at the base- 

 of the pedicels, sometimes in the lower branches all the 

 spikelets are reduced to subulate or lanceolate glumes ;. 

 glume I rather longer than III, lanceolate, acuminate, 

 3-veined, glabrous or setose towards the tip, II gibbously 

 ovoid, acuminate, herbaceous, obscurely veined, glandular,, 

 naked or furnished, sometimes copiously, with long spreading 

 hook-tipped bristles, margins broadly membranous, III as 

 long as II, orbicular-ovate, obtuse, coriaceous, empty, paleate,. 

 palea coriaceous, as long as the glume, lanceolate, finely 

 acuminate, sides involute, IV much smaller than III, sessile, 

 oblong-lanceolate, acuminate, dorsally rounded, smooth, white,. 



