96 CLxxiii. GRAMiNE^. (J. D. Hooker.) 



Tkibe III. ZoYsiEjE. (See p. 3.) 



22. TBACBYSi Fers. 



An atniTial difFuse softlj yillous grass. Spikes 2- rarely S-nate, terminal, 

 flattened, rigid, flexuons, jointed. Spikelets 1-fld-, in alternate subsesaile 

 fascicles wbich are jointed on the under surface of the spikes, and are 

 formed of 1-3 perfect sessile spikelets mixed with sqnarrose flowerless gls. 

 G^u/nes of perfect spikelets 4, I minute, triangular, coriaceous, nerveless; 

 II narrow, linear-lanceolate, membranous, 3-5-nerved, nerves ciliate below 

 the middle; III much the largest, broadly obovate-oblong, cuspidately 

 acuminate, rigidly coriaceous, 9-nerved epaleate ; IV much smaller, ovate- 

 lanceolate, cuspidately acuminate, chartaceous, 1-nerved; palea lanceolate, 

 chartaceoua, nerveless. Lodicules very minute, hyaline. Stamens 3, anthers 

 linear. Styhs long, free, stigmas long. Grain broadly oblong, compressed, 

 free within the gl. and pale. 



The above description differs from any that I have met with. Gl. Ill of the 

 perfect spikelet is much larger than any of those of the imperfect spikelets, which 

 form a squarrose tuft around the perfect. 



T. mncronata, Pers. Syn. i. 85 ; Beauv. Agrost 107, t. 21, f. 7 ; 

 Xunth E7iU7}U PL i. 168, Suppl 123 ; Thw. Enum. PI. ZeyL 362 ; Trim. 

 Gat GeyL PL 106; Miq. FL Ind. BaL ii. 472; WalL CaL n. 8674; Wight 

 Gat. n. 1660. T. muricata {error for mucronata), Steud. Syn, Oram. 112' 

 Cenchrus muricatns, Linn. Mant, 302 ; Schreh. Beschr. Graes. ii. 69, t. 34. 

 C. tripsaceus, Herb. Linn, ex Munro in Journ. Linn. Soc. vi. (1862) 5a. 

 Trachystachya geminata, A. Dietr, Sp. PL ii. 16. Tripsacum distachyum, 

 Jlerb. Linn, ex Munro L c. Trachyozus muricata, Steud. L c. 112. Panicam 

 dimidiatum, Burm.FL Ind. 25, t. 8, f. 3. P. squarrosum, lieiz. Qbs. iv. 15, 

 T. 1. 1 ; Boxb. Cor. PL iii. 4, t 206 j FL Ind. i. 288. 



The Dbccak Peninsitla; sandy ground near the sea; Heyne^ Soxburghf Ac. 



CKYLOy; Jaffna, Qardiier. 



Stems 1-2 ft,, weak, geniculate, rooting at the nodes. Leaves 2-6 by i-i iO'i 

 Rnear-lanceolate, acuminate, flaccid, rarely nearly glabrous, raargins often crisped; 

 mouth of sheath hairy; ligule obscure. Peduncle long or short. Spikes 2-3 in** 

 sessile or shortly peduncled, costa of rachis stout, margins broad, green ; joints concaTC 

 subquadrate. Spikehts (perfect) | in. long, sessile or very shortly stoutly pedicelled, 

 pale, shining, terminal one on the spike solitary*; gl. II very much narrower than 

 III, and not overlapping the base of the latter or hardly, epaleate ; III nearly fla^ 

 with the margins incurved; IV with the palca terete, margins strongly incurvea 

 over the palca. — The structure of gl. II is very peculiar; at first sight it may bj 

 taken for a narrow membranous palea of III, its lower insertion to which ^^^ 

 exterior position are difficult to distinguish. 





<^- 



*). 



23. TRAGUS, Sailer. 



A low rigid perennial grass. Leaves small, Spikelets 1-fld., 2-5-nate 

 in narrow spikea, not articulate on the pedicels; rachis slender. Glu^ 

 2 ; I thickly coriaceous, oblong-lanceolate, 5-ribbed, ribs with long recnrvea 

 spines embracing II which is chartaceous, oblong, apiculate, 1-nerved, 

 scabemlouB ; palea hyaline, obtuse, involute, faintly 2-nerved below. Sta- 

 mens 3, anthers very long. Styles short, distant, stigmas short. Gratis 

 linear, free within the glumes. 



f I 



:ff 



