228 CLXxiii. GRAMiNE^. (J. D. Hooker.) [^Aristida. 



DutJiie Grass. N. W. Ind. 26, Fodd. Grass. N. Ind. 47 ; Boiss. Fl. Orient, v. 

 496. A. ciliata, Steud. S/- Mochst. ex Steud. Nom. Ed. II. i. 131 (non Desf.). 

 A. decorata, Steud. Syn. Oram. 421. A. paradisea, Edgew. in Joufn. As. 

 Soc. Beng. xvi. (1847) ii. 1219. A. pogonoptila, Boiss. I.e. A. Schimperi, 

 Soclist. et Steud. ex Steud. I. c. 143. Arthratheram ciliatum, Nees in 

 Zinneea, vii. (1832) 287, Fl. Afr. Austr. i. 182. Arth. elatum, Boiss. Diagn. 

 Ser. II. iv. 128. Arth. hirtiglnme & poeronoptilam, Jaub. & Spach, III. 

 PI. Orient, iv. 52, 56. Arth. Schimperi, Nees Fl. Afr. Austr. 178. 



The Panjab, Jacq^uemont, Falconer, &c. Peshawue, &c., Stewart. Sciiri), 

 Serh. CaicMii. — DiSTEiB. Westward to E^ypt and Abyssinia. 



Perennial. Stem stout at the base, slender and 1-2 ft. high. Leaves 3-8 in., 

 coDTolute, filiform, flexnons, tips capillary. Fanicle very slender-, hrauehes very 

 short, erect, capillary. SpiTcelets pale green or straw-colrd. ; gls. I and II not or 

 hardly awned, hairy or glabrous ; I J in. ; II rather shorter; III inuricalate, callus 

 bearded ; awn straight, articulate in the gl., oolamn twisted, plumose as well as the 

 uiiddle branch. 



11. A. plumosa, Linn. 8p. PL Ed. II. 1666 ; stem slender, panicle 

 narrow, branches very short, gls; I and II subeqnal. III glabrous smooth, 

 awn capillary middle branch 2-3 in, plumose above naked below, lateral 

 much shorter naked of extreme tenuity. Vahl Symb. i. 11, t. 3 ; Trin. 

 Bifs. i. 181, ii 26 ; in Act. Petrop. (1829) 89 ; Trin. & Bupr. I. c. Ser. VI. 

 v. (1842)165; FuntA Fnum. PL i. 195, ii. 151 ; Steud. Syn. Gram. US; 

 Aitchis. Gat. Panjab PL 164 ; Boiss. Fl. Orient, v. 495 ; Duthie Grass. 

 N.W. Ind. 26, Fodd. Grass. N. Ind. 47. A. brachypoda & Forskahlii, 

 Tausch. in Flora (1836) 506 ; Boiss. I. c. 495, 496. A. lanata, Forslc. FL 

 JEgypt. Arab. 25, A. Raddiana, Savi in Mem. Moden. (1837) 198 ; Stevd. 

 I. c. 144. Arthratherum plumosum, Nees Fl. Afr. Austr. i. 182. 



Western Tibet ; Iskardo, alt. 7700 ft., Clarke. — Disteib. Turkestan, Persia, 

 N. Africa. 



Perennial. Stem 1-2 ft., from a stout branching woody stock with stout rigid i 

 roots. Leaves 2-6 in., rigid, filiform, convolute, flexuous. Panicle 2-3 in. (exel. 

 the awns) very narrow. Spihelets erect ; gls. I and II i in., not awned ; III callus 

 bearded, column of awn ^ in,, very slender, hardly twisted, glabrous j middle branch 

 strict, silvery, lower i naked, lateral about i In. long. 



, UNBETEKMISIABIE SPECIES, 



A. RIGNESOENS, Soem. Sr Schult. Syst. ii. 400 ; Steud. Syn. Gram. 141. A. rigida, 

 H€(yine ex Roth. Nov.Sp. 42 {non Gav.) ; Kunth Unwm. £l..i. 197. Arthratherum 

 rigidum, Sclvult. Mant. ii. 212). — May be A. Hi/strw. 



«0. STXPA, Zinn. 



_ Tufted perennial grasses. Leaves usually convolute. Spihelets loosely 

 panicled, terete, l-fld^ rarely dorsally compressed, raohilla forming a 

 thickened or narrow callus below gl. III. Glumes 3, I and II empty, 

 persistent, keeled, acute, rarely awned; III rigid, convolute, terete, 

 narrowed into an entire or notched or 2-fld tip, with a long terminal bent 

 usually deciduous awn, column of awn twisted rarely strai<rht ; palea 2- 

 nerved, closely embraced by the gl. Lodicules 3, large. Stamens 1-3, tips 

 of anther- cells bearded or naked. Grain narrow, terete, free within but 

 tightly embraced by the gl. and palea.— Sp. about 100, temperate and 

 tropical. 



Dr. Stap^' h-is aided me greatly in this difficult genus. 



