36. Thtsanolena.] 130. GRAMINE.E. 



36. THYSANOLiENA, Kees. 



Very large -with solid stems and large distichous leaves. Panicle 

 very large effuse decompound with crowded long compound suberect 

 branches, branchlets bearing mja-iads of subsecund very minute 1-fld. 

 spikelets obscurely jointed in their pedicels, pedicels often in pairs 

 articulate on the branchlets. Glumes 4, i shortest, about half spikelet 

 or less, membranous, concave nerveless ; ii similar but rather longer ; 

 iii longest very acuminate empty 1 -nerved, hardening ; iv rather 

 shorter membranous ciliate Avith spreading (or erect) white hairs, 

 palea short, truncate. St. 2-3, anthers broadly oblong. Styles free. 

 Grain most minute, free within the hardened glumes. 



1. T. agrostis, Nees. Dodri, Gara-jonor (ravine-broom), K. ; Karsar, 

 bushnia, S. ; Phulbari, Gond. ; Jopono, Birja. 



A very large bamboo-like or reed-like grass 5-10 ft. high with 

 stems often -5" diam., large broad flat oblong-lanceolate leaves often 

 18" by 3" and panicles up to 3 ft. by 2 ft. Spikelets variable in length 

 •03-06" long. 



On shady slopes in the forests but especially on damp steep hanks along ravines 

 and watercourses. Rajmahal Hills ! All the forest districts of Chota Nagpur, 

 ascending to the top of Parasnath and the 2}<^ts in ravines ! Sambalpur ! Fl. , Fr. 

 May- June . 



Leaves usually broadest above the rounded or cordate base, punctulate, margins 

 nearly smooth, mouth of sheaths somewhat hairy, ligule truncate nearlj^ oljsolete. 

 Panicle-rhachis glaucous, main branches often 1 ft. long, swollen and pubescent 

 or tomentose at the axils. There may be two varieties. lu our ai-ea the glumes 

 ii and iv are subequal and only •03--04" long, in the Jalpaiguri district gl. iii is 

 •06" long. In our plant the cilia of iv spread widely in flower. Hooker describes 

 them as erect, which of course they are in the bud, and possibl.y also in fruit, 

 though this seems unlikely. 



The panicles are used for brooms. 



37. ARUNDINELLA, Raddi. 



Grasses of very various habit and aspect. Spikelets minute to rather 

 large, not jointed on their pedicels, 1-2-fld., in panicles or panicled 

 spikes. Glumes 4 ; i usually ovate acute or acuminate shorter than 

 the next two, 3-5-nerved ; ii lanceolate or ovate-lanceolate acuminate 

 or subaristate, 5- rarely 7-nerved, longest ; iii subacute or narrowly 

 truncate 5-7 -nerved paleate, male or neuter ; iv smallest, 2-sexual, 

 articulate at the base and deciduous with the grain, membranous in 

 flower, subcoriaceous and scaberulous in fruit, with a terminal sub- 

 geniculate awn with lower part twisted or awnless or sometimes with 

 2 very slender awns lateral to the terminal, base usually bearded. 

 Styles 2 free or connate below, stigmas long. Grain free within 

 glume iv. 



I. Glume iv awned : — 



A. AAvns 3, two lateral capillary. Tall perennial . . I. sefom. 



B. Awn solitai-y : — 



Spikelets minute in delicate panicles. Annual . . 2. teneUa. 

 Spkts over "l" long. Tall perennial .... ."1. brasiliein'is. 

 IT. Gl. iv with awn short or 0. Spkts. spicate . . . . i. WaUichli. 



1. A. setosa, Trin. Jharu, JNIotamui-jhar, K. ; Burn lukui-ghas, »S'. 



A csespitose slender grass 3-4 ft. high with thick stoloniferous root- 

 stock, smooth glabrous stems, flat or involute setaceous acuminate 



982 



