Panicum.] CLXXIII. GRAMINEJE. (J. D. Hooker.) 51 



lisrule a ridge of hairs. Panicle 6-10 in., often nearly as broad, lower branches 

 whorled and fascicled, trigonous, scaberulous. Spikelets green, variable in size, 

 terete, palea of gl. Ill 0, or minute, or linear, neuter or male rarely bisexual. 

 Closely allied to (if not a more luxuriant aquatic form of) P. repens, and confused 

 with it as to synonymy j but a coarser plant, with a more spreading panicle, more 

 acuminate spikelets and a more oblong gl. IV. Further, P. repens has normally 

 shorter glaucous narrower convolute leaves, and a more irregularly branched panicle. 

 Also very near the Australian P. decnmpositum, Br., which has normally a decom- 

 pound panicle with more slender spreading branches and branchlets, and distant 

 solitary spikelets. 



Dr. Stapf has made for me a careful analysis of the spikelets of a large series 

 of specimens, and I have made many myself, with the view of testing the value of 

 the absence or presence of the palea in gl. Ill, and its sexuality. As ex im pies he 

 finds in 9 spikelets taken promiscuously 3 epaleate and 6 with reduced paleas. In 

 5 others all are paleate and male, in 3 others all paleate but neuter. In 9 others 

 all epaleate. In a branch with 10 spikelets, .9 of them had gl. Ill paleate, 1 epaleate. 

 Of 6 spikelets from near the base of a branch, 3 epaleate, 2 male with a rudimentary 

 ovary, 3 palente and female. Of 8 spikelets from a branch in the lower part of a 

 panicle, 2 lowest epaleate, 6 paleate and bisexual. 



89. P. subeglume, Trin. Pan. Gen. 204; stem slender, leaves linear, 

 base narrowed, panicle large effuse, rachis and branches flexuous capillarv, 

 spikelets -^ in. pedicelled elliptic-oblong subacute, gl. I and II absent, III 

 and. IV equal. III 5-7-nerved glabrous or silky, IV elliptic-oblong or 

 lanceolate cuspidate. Steud. Syn. Gram. 84. P. arcuatum, ~Br. ex Nets 

 in Wight Cat. n. 1639 (non Br. Prodr.). P. Brownianum, Wight So Arn. 

 ex Steud, I.e. 98. P. Torreyanum, Wight et Arn. ex Sfeud. Norn. Ed. 

 II, ii. 264 ; Wight Gat. n. 1634. Milium capillare, Roth Nov. Sp. 39 ; 

 lEunth Enum. PI. i. 67. M. tomentosum, Koen. ex Rottl. in Ges. Naturf. 

 Fr. Neue Schr. iv. (1803) 220; Steud. Syn. Gram. 34; Kunthl.c. 66. 

 Isachne ? Wall. Gat. n. 8659. 



SOUTHERN DECCAN, Heyne; Madura, Eottler ; Palaveram, Wight. 



Perennial. Stem 1-2 ft., soft. Leaves 3-6 by in. or less, finely acuminate, 

 and sheaths glabrous softly hairy or tomentose ; ligule short, membranous. Panicle 

 3-7 in., spreading, glabrous ; lower branches suberect, alternate, divided from the 

 base. Spikelets much shorter than their pedicels, erect, dorsally compressed. 

 Grain linear-oblong, obtuse. The absence of gl. I and II are characters of Pas- 

 palum, but the habit and inflorescence are those of a Panicum., 



Gl. I = to | III, 5-7-nerved. 



o Spikelets acute or acuminate. (See also P. aurltum.) 



40. P. incisum, Munro ex Clarke in Journ. Linn. Soc. xxv. (1890) 

 84, t. 33; stem slender, leaves long linear-lanceolate base narrow, panicle 

 effuse very lax, rachis branches and pedicels very slender subscaberulous, 

 pedicels very long, spikelets in. remote solitary elliptic acuminate, gl. 

 I about = III ovate acute 1-3-nerved, II and III subequal, II 5-nerved, 

 III 7-nerved, palea short, IV elliptic acuminate quite smooth polished 

 margin narrowly inflexed. Munro Cat. PL Griffith, &c., ined. p. 56. 



UPPER ASSAM ; Naga hills, Griffith ; Nambre forest, alt. 400 ft., Clarke. 



Perennial. Stem 1-2 ft., quite glabrous. Leaves 5-10 by ^-f in., finely acumi- 

 nate; ligule elongate-oblong, scarious. Panicle 3-6 in., usually sessile as it were on 

 the upper leaf sheath. Spikelets many times shorter thau their pedicels, obscurely 

 articulate at the base; glumes distant on a distinct inarticulate racheola ; II tutra- 

 cious ; IV rather shorter than II, brown. Altogether resembles an Isachne in habit, 



E 2 



