Stipa.'] CLXXiii. QRAMiNEA (J. D, Hooker.) 229 



A. Column of awn twisted. 



* Awn plumose or hairy throughout its length or nearly so. 



1. S. orientalls, Trin. ex Ledeb. Fl. Alt. i. 83 ; panicle narrow more 

 or less embraced by the dilated sheath of the uppermost leaf, apikelets J in., 

 gls. I and II about tv\fice as long as the silkily hairy III. Ledeh. Ic. FL 

 Boss. t. 223 ; 2Vm. in Act. Acad. Petersb. VI. i. (1830) 79 ; Xunih FJnum. 

 PL i. 185 ; Steud. Syn. Oram. 131 ; Boiss. FL Orient, v. 504 ; Duthie Grass. 

 N.W. Ind. 27. S. Semenovii, Krassn. Descr. PL Thiansch. in Script. Bot. 

 EorL Univ. Peirop. ii. 22. S. Szovitziana, Duthie I. c. 27 {non Trin.). 

 S. tartarica, Jacquem. inss. 



Western Tibet, alt. 10-15,000 ft., Jacquemont, &c.— Disirib. Westward to 

 Persia. Altai Mts. 



Stems 6-14 in., forming dense hard tufts, clothed below with shining sheaths. 

 Jjeaves 4-10 in., filiform, tips long capillary ; sheath of uppermost, 4-6 by ^-i in. 

 broad. Panicle elongate, branches and pedicels short, erect. Gls. I and II hyaline, 

 J-i in. long, tips slender; I 1-necved or 3-nerved at the base; II 3-nerved ; III 

 cylindric, callus = about | of the gl., bearded; awn plumose throughout its length, 

 nearly straight, column about i of its length. — Probably a form of S. barbata. Said 

 to be the commonest grass on the Pamir. 



2. S. basi-plumoaa, Munro mss. ; panicle very narrow, branches 

 and pedicels very short, spikelets purple, gl. I and II ^-J in., Ill about 

 5 shorter than Ii sparsely hairy, awn capillary twice or thrice as long as 

 the spikelet very densely bearded towards the base. 



Western Tibet j Nubra, and the Lanak Pass, alt. 15-17,000 ft., Thomson. 



Stems 6-16 in., densely tufted, slender, strict. Leaves 4-6 in., convolute, 

 filiform, slightly scabrid. Panicle 2-6 in., sometimes sheathed; branches and 

 spikelets distant ; gl. 1 and II ovate-lanceolate finely acuminate, tip and margins 

 white hyaline ; I 3-nerved at the base ; II 3-Derved ; callus of IV = about ^ ot the 

 gl. ; awn very delicately plumose upwards with spreading hairs, column slightly 

 twisted. 



Var. longe-aristata, Munro mss. ; gl. I and II ^ in., awn 1^ in. — Western Tibet, 

 Thomson. 



3. S. purpurea, Chisel, in Goett, Nachr. (1868) 82; spikelets few 

 pnrple on long capillary sigmoidly flexuous pedicels, gl. I and II |-I in., 

 Ill about J shorter than II softly hairy, awn 2^3 in. flexuous. S. Rioh- 

 teriana. Herb. Ind. Or. Hf. T. ; Duthie Grass. N. W. Ind. a? {ruot ^w. 

 S{ Kir.). Lasiagrostis tremula, Ruprechi Serf. Thianaoh. 36. 



Western Tibet ; Gnari Khorsum, alt. 17,000 ft., Schlagintweit ; Lake Eukshun, 

 15,000 ft., iamce.— DiSTEiB. Thianschal Mts., in Central Tibet, alt. 16,000 ft., 

 TKoToU. 



Stems densely tufted, 6-10 in., filiform, sheathed below the panicle. Leaves 

 2-4 in., filiform, convolute ; ligule elongate. Spikelets very few, hardly forming a 

 panicle, branches and pedicels ^ in. or more, sometimes zigzag. Gls. I and II 

 naiTowly lanceolate, dark purple with slender hyuline tips ; I II callus = J- of the 

 gl., villous. Anther-tips naled. 



4. S. mong'olica, 2Wc«, ex Trim.. inBuU. Sc. Aead^ Petersb. i. (1836) 

 67 ; panicle open with few distant widely spreading capillary flexuous 

 branches, spikelets j-J-in. ovate dorsally compressed, gls. I and II purple 

 below the middle hyaline above it. III hairy, awn about twice as long as 

 the gls. Stevd. S'ljn. Gram 132 ; Dutkie Grass. JS'. W. Ind. 27. Lasia- 

 grostis mongholica, Trin. «» Rupr. in Mem. Acad. Petersb. Ser. YI. Sc. 



