. 



Andropogon.'] CLXXIII. GKAMINEJS. (J. D. Hooker.) 



A. Column of awn of gl. IY glabrous (rarely awn 0). 

 * Peduncle of spikes shorter than the proper spathe. 



f Joints of spikes and pedicels of upper spikelets copiously villous on 

 the sides and back, hairs more or less concealing the sessile spikelet. 



70. A. Xwarancusaj Jones in Asiat. Research, iv. (1795) 109 ; stem 

 short or tall, leaves flat or convolute, panicle subsimple or decompound, 

 joints of rachis and pedicels of upper spikelets subclavate tops toothed, 

 sessile spikelets ]-J in. linear-lanceolate acute, gl. I dorsally flat glabrous, 

 keels scaberulous or ciliolate. 



Plains of N.W. INDIA, from the Jumna westwd., and southwd. to Scind. The 

 WESTERN HIMALAYA, from Kashmir to Kumaon, and WESTEBN TIBET, ascending to 

 8000 ft. N. CANARA and the DECCAN. DISTRIB. Westwd. to N. Africa. 



Stems tufted, on an annulate creeping rootstock, 6 in. to 6 ft. high ; whole plant 

 usually of a pale often glaucous green. Leaves 6 in.-2 ft., narrowly linear, tips 

 capillary, rigid or flexuous, glabrous or scaberulous, glaucous or pruinose beneath, 

 midrib slender ; sheaths glabrous, lower dilated ; ligule shortly oblong, membranous, 

 ciliolate. Panicle very variable, branches distant or crowded, subsimple or much 

 densely or loosely branched j proper spathes f in., longer than the peduncle of the 

 spikes, narrowly lanceolate. Spikes i-f in., unequal ; spikelets 3-1 pairs. Sessile 

 spikelets pale, sometimes reddish ; gl. I thin, keels hardly margined not winged, 

 nerves or 2-4 between the carinal ; II cymbiform, acute, 3-nerved ; III 2-nerved j 

 IV narrow, lobes subulate, ciliate. Pedicelled spikelets as long as or rather longer 

 than the sessile, purplish, narrowly lanceolate ; gl. I 7-9-nerved, keels scaberulous ; 

 31 margins ciliate ; III broadly oblong, hyaline, fimbriate. Hoots aromatic. 

 There are no limits between A. Iwarancusa and laniger. The former is usually 

 the larger plant, with broader leaves and often split sheaths, and is the most 

 Eastern form. The authority for the name Iwarancusa as a specific one is not very 

 clear. Blane describing his Nardus indica says that Sir J. Banks regarded it 

 as a species of Andropogon. Jones incidentally gives Irawancusa as the specific 

 name ; possibly he may have taken it from Banks. 



Subsp. 1. A. IWARANCUSA proper; tall, much branched, leaves long flat, lower 

 sheaths deciduous splitting into fiat often tortuous lamina?, panicle narrow compound. 

 Kunth Enum. PL i. 493; Steud. Syn. Gram. 388. Hack. Monogr. Androp. 599; 

 Eoab. Fl. Ind. i. 275 ; Ainslie Mat. Med. Ind. ii. 114 ; Wall. Cat. n. 8793 ; Trin. Sp. 

 Gram. Ic. t. 326 ; Duthie Grass. N. W. Ind. 19. Cymbopogon Iwarancusa, Schult. 

 Mant. ii. 458. Nardus indica, JBlane in Phil. Trans. Ixxx. (1790) 284, t. 16. 

 Common in N. India. I have seen no N. African specimens with the lower leaf- 

 sheaths of this form, a character which is, however, very inconstant. Khuskus 



Subsp. 2. A. LANIGER, Desf. Fl. Atlant. ii. 379 ; stem short subsimple, leaves 

 junciform, lower sheaths hardened persistent, panicle narrow subsimple.. Kunth 

 Enum. PI. 5. 493; Steud. Syn. Gram. 386; Hack. Monogr. Androp. 598 ; Aitchis. 

 Cat. Panjab. PI. 174 ; Duthie Grass. N.W. Ind. 2Q,Fodd. Grass. N. Ind. 35, t. 23 ; 

 Lisboa in Bomb. Journ. Nat. Hist. Soc. vi. (1891) ; Boiss. Fl. Orient, vii. 465. A. 

 Arriani, Edgew. in Journ. Linn. Soc. vi. (1862) 208 (Ariani). A. circirmatus 

 Hochst. fy Steud. ex Steud. I. c. 387. A. criophorus, Willd. Sp. PI. iv. 90. A. 

 Olivieri, Boiss. Diagn. v. 76 ; Steud. 1. c. 387. A. commutatus, Aitchis. in Journ. 

 Linn. Soc. xix. (1882) 191 (non Steud). Cymbopogon arabicus, Nees ex Steud. I. c. 

 C. circinnatus, Hochst. in Schimp. PL Arab, exsicc. Ed. 2 (1844) n. 783. C. 

 Arriani, Aitchis. I.e. C. laniger, Duthie in AtUns. Gaz. N.W. Ind. 640. Gyni- 

 nanthelia lanigera, Anderss. in Schiveinf. Beit. Fl dEthiop. 300. A. laniger is the 

 N. African form of the species, also common in N. India. Edgeworth's A. Arriani 

 is certainly this. The A, commutatus of Afghanistan and Scind (Mocks) is also 



