4 



2 CLXXHi. GRAMiNE^. (J. D. Hooker.) 



(1883), a work of remarkable completeness and accuracy, considering the chaotic 

 condition in which the author found the Order; and Hackel's admirable monoj^riipli 

 of the Andropogonece \n A. de CandoUe " Monogr. Phanerog." vol. vi. (1889), the 

 largest and most difficult Tribe of grasses. 



I have cited synonyms to a much greater extent in this than in any other Order 

 described in the "Flora of British India " (except the ** Cyperacese" by Clarke) 

 with the view of aiding the researches of future authors. Many of these synonyms 

 had never been fixed with any approach to exactness, and many were for the first 

 time identified during Mr. Jackson^s and my labours on the *^ Index Kewensis." I 

 cannot expect that all will prove to have been satisfactorily reduced, and still less 

 that all have been brought to light. 



Referring to the classification of the Indian genera, I have been compelled to 

 diverge somewhat from Bentham's arrangement, and to abandon some of his Tribes 

 and Subtribes, in many cases following HackeFs more recent and well-considered 

 views. These divisions throughout the Order are of very unequal value, and are as 

 difficult of delimitation as of definition upon any fixed principles. They are, indeed, 

 in some cases arbitrary, and in others more or less artificial. In this matter, and in 

 the description or revision of some of the very difficult genera, I have derived great 

 aid from Dr. Stapf, Assistant in the Herbarium of the Royal Gardens, who has 

 lately been instructed by the Director of Kew to study and name, the materials in that 

 Herbarium critically. As Dr. Stapf shares my views as to the wide ranges of the 

 species, and the undue multiplication of their synonyms, his labours may be expected 

 to yield far-reaching results, taxonomic, morphological and geographical, and to 

 mollify some of the conclusions arrived at in the following attempt to metbodiEe 

 the Indian OramineiC. As affecting the numbers and synonyms taken from** Wal- 

 lich's List," I have to observe that for some of them I have had to depend on the 

 ticketed dupli( ates in Herb, Hook, and Benth., the types being wanting in the 

 Wallichian collection in the rooms of the Linnsoan Society. 



Series A. Panicacese. Spikelets articulate on their tpedicels, or 

 deciduous with them, 1-2- fid., upper fl, alone (if 2) fruiting. 



Excfption^^ Spikelets inarticulate on their pedicels in Arundinella and IsacTine. 

 Spikelets articulate on their pedicels, or with articulate pedicels occur in Poaceas, in 

 AlopecuruSj Cyathopus, PolypogoUy Fittgerhuthia, and Lophathencm. Upper 

 flower alone fertile in Tribe Fhalarid€<je of Foacece, and in Tristach^a. 



1. Rachis of infl. inarticulate, or subarticulate in Stenotaphrum. Fl. 

 gl. usually coriaceous or herbaceous. 



Tribe I. Panice.b. Spil-e/efs 2-fld., upper fl. bisexual, lower male or 

 neuter, rarely both fertile. {Sjnnifex is dioecious.) 



» Spikelets articulate on their pedicels, except Isachne and Arundinella, 

 f Spikelets not involuccllate by bristles. 



§ Spikelets not aivned {gl, II and III beahed or awned in Pan. Crns-galli). 



(See also Trichol(ena and Arundinella,) 



Spikelets dorsally flattened, base not thickened ; gls, 3, 



with very rarely a minute fourth (lowest) ... 1. rASPALtT\r. 



Spikelets of Paspalum, but with a thickened basal callus . 2. Ekiocjiloa. 



Spikelets subglohose, panicled; gls. 4, I and 11 sepa- 

 rately deciduous, subcqual . . . . .3. Isacune. 



Spikelets panicled or spicate, gls. 4 (2 in P. suheglume) 

 I and II very rarely subequal, II and III awned in 

 P. CruM-galliy iV rarely very shortly awned . . 4, Panicum. 



Spikelets of Panicwm, but gl. IV. narrowed into a short, 



flattened stipes, or with 2 appendages near the base . 5. Ichnanthus. 



Spikelets innumerable, very minute, hairy, densely 

 crowded in the capillary branches of a very large 

 panicle 6. Thysaxol^xa. 



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