\ 



\ 



i 



Coelachne.'] CLXXIII. GRAMINE.&. (J. D. Hooker^ 271 



Stem 6-18 in.< flaccid, decumbent or ascending, slender or rather stout, leafy up 

 to the panicle. Leaves uniform throughout the stem, -2-1 in., lanceolate, subulate, 

 acuminate, distant or subequitantly sheathing, ecostate, minutely scaberulous above, 

 nerves striate ; ligule a few hairs. Panicle very various. Spikelets -J^-TO ' u> ' 

 sessile or pedicelled, globose or ovoid ; gl. I and II suborbicular or hemispheric, 

 many-nerved, membranous or herbaceous; III hermaphrodite, coriaceous, dor- 

 sally rounded, nerves or very obscure ; palea coriaceous, margins incurved ; 

 IV much the smallest, often imperfec-t, neuter or fern. After a long study of a 

 multitude of specimens from all the countries mentioned above, I conclude that 

 there is but one known species of this genus. If there are two, the second is one 

 to include vars. gracillima and perpusilla, in which case the latter name would be very 

 inappropriate for both. 



Var. pulchella proper ; stems filiform decumbent and ascending, leaves lanceolate 

 flat, panicle with distant spreading filiform branches, spikelets sV~rs * n - su ^ - 

 globose, gl. I and II hemispheric, III broadly ovoid, IV faintly hairy or glabrous. 

 C. pulchella, Br. I. c. ; Endl. Iconogr. t. 2 ; Kunth Eevis. Gram. ii. t. 143, Enum. 

 PI. i. 371; Steud. 8t/n. Gram. 284; Benth. Fl. Austral, vi. 626. Gramin, Wall. 

 Cat. n. 8909. Burma ; source of the Chappedong River, Wallich. Australia. 



Var. brachiata, Muni'O in Herb. Kew ; stem stout or slender suberect or ascending, 

 panicle 2-4 in. long, branches shorter than in pulchella proper, spikelets ^-^-g in. 

 like those of pulchella proper but sessile. C. brachiata, Munro ex Benth. Fl. Austral. 

 vii. 626 (partim). Tenasserim, Griffith (Kew Distrib. 6675) Heifer. 



Var. simpliciuscula ; stem suberect or creeping and rooting rather stout, leaves 

 flat, panicle elongate narrow", branches short stiff, spikelets T L in. ovoid sessile 

 crowded on the branches or in fascicles on the main i-achis, gl. I and II unequal, 

 III ovate-lanceolate. C. simpliciuscula, Munro ex Benth. in Journ. Linn. Soc. xix. 

 (1881) 93, FL Austral, vii. 626. C. infirma, Buese PI. Jungh. i. 350; Miq. Fl. 

 Ind. Bat. iii. 399. C. pulchella, Thw. Enum. 273 ; Benth. Fl. Hongk. 430. C. 

 brachiata, Trim. Cat. Ceyl. PL 108. C. madagascariensis, BaTcer, in Journ. 

 Linn. Soc. xxv. (1 890) 348. Isachne brachyglumis, Hochst. in Hohen. PI. NilgJi. n. 

 1283 (name}. Panicurn simpliciusculum, Wight fy Arn. ex Steud. Syn. Gram. 

 96. Khasia and Naga Hills, alt. 4-5000 ft. J. D.H. & T. T., Clarke. Nilghiri 

 Hills, Wight, &c. Ceylon, Walker, Thwaites (CP. 884). Java, Tonkin, China, 

 Madagascar. Intermediate between brachiata and spicata. 



Var. spicata ; stem short stout suberect, leaves flat, spikelets -^iV i fi - ovoid in 

 dense spiciform panicles subsessile, gl. I and II orbicular subequal membranous, III 

 broadly ovate. Nepal, ffallich (Cat. n. 8908). Chota Nagpore, Clarice. S. India, 

 Wight (Herb. n. 3376). China. 



Var. gracillima, stems 6-12 in. capillary or filiform, leaves flat, panicle very 

 slender, branches short spreading, spikelets few T V~To i n - pedicelled, gl. I and 

 II very unequal, III and IV lanceolate. C. perpusilla, Thw. Enum. 373 (in part). 

 Nilghiri Hills, Schmid. Ceylon, Adam's Peak and Newera Elia, in swamps, Thwaites 

 (C.P. 130). 



Var. perpusilla, stems capillary densely tufted, leaves filiform, panicles as in 

 gracillima but with fewer branches and spikelets. C. perpusilla, Thw. I. c. in part 

 (C.P. 450). Trim.l. c. (in part). Isachue perpusilla, Wight Sf Arn. ex Wight Cat. 

 n. 2043. Ceylon, Walker, Adam's Peak, Thwaites. 



Var. Oardneri ; stem 12-18 in. stout flexuous, clothed throughout with subulate- 

 lanceolate erect sheathing leaves, panicle stiff with few short spreading branches, 

 spikelets T V-To in - sessile, gl. I and II subequal, III ovate. Ceylon, Gardner 

 (n. 1018, 1019). 



79. TRISTACHYA, Nees. 



Perennial grasses. Leaves various. SpiJceleta 2-fld. (lower fl. male upper 

 fern, or perfect), panicled, not jointed on their pedicels ; rachilla villous, 

 produced between gl. II and III but not beyond IV, jointed at the base. 

 Glumes 4 ; I and II unequal, not awned, persistent, empty, lanceolate, 



