168 



BIBLIOGBAPHICAL NOTES. 



D. ? yuccsefolia, sp, n. Stem shrubby, branched, stout. 

 Leaves crowded at tiie end of the branches, eiisiform, acuminate, 

 stiff and coriaceous, 15 in. long and 1 in. wide, striate. Panicle 

 large, spreading, with numerous slender pubescent branches. 

 Bracts J in. long, lanceolate, acuminate. Flowers very small, 

 4 in. long, scattered on the branches, almost sessile ; pedicels 

 very short, pubescent. Perianth-tube turbinate, glabrous ; lobes 

 oblong, obtuse, free almost to the base. Stamens a little shorter ; 

 filaments adnate to the base of the tube, flattened, dilate above, 

 red. Anthers oblong, obtuse, dorsifixed. Pistil shorter ; ovary 

 oblong, triquetrous, truncate. Style cylindric. Stigma dilate, 

 capitate. 



Siam, at Ghirbee, on limestone rocks {Curtis, no. 2935). 



The leaves resemble those of some Yucca rather than those of a 

 Draccena. The large spreading panicle with pubescent branches, 

 the small turbinate white flowers and triquetrous ovary, and 

 stamens adnate to the base of the flower, make it a very distinct 

 plant. 



BIBLIOGRAPHICAL NOTES. 

 X. — The Dating and Indexing of Periodicals. 



The suggestions made on these matters (Journ. But. 1894, 180, 

 271) have been in so many cases acted upon that I venture to raise 

 one or two more points connected with the subject. When I 

 referred with approval {I. c. 181) to the BulUlin uf the Torrey 

 Botanical Club as giving the date at the head of each number, 

 I said, " This appears not easy to carry out, but Dr. Britton has 

 somehow overcome the difficulty." 1 am now doubtful as to how 

 far this date is to be accepted as strictly accurate. The dates of 

 issue for the last three numbers have been Nov. 30th, Dec. 30th, 

 Jan. 30th. Each issue contains three sheets, and the date appears 

 on the first of these. It seems to me that unless the possibility of 

 accidental delay has in some way been entirely removed, it is not 

 easy to guarantee that a number thus dated should have been 

 printed, stitched, and wrapped by the exact day named. When 

 the date is printed on the cover, as in the case of the Botanical 

 Gazette, the possibilities of such accidents are reduced to a mini- 

 mum, and now that these dates are reprinted in the index to the 

 volumes of that periodical, I see no better plan than this. 



The practical bearing o£ this point will very shortly become 

 manifest. The Supplement to the Index Eewensis will include all 

 plants published up to the end of 1895. Should the species published 

 in the Torrey Club Bulletin dated Dec. 30th, 1895, be included — 

 i. c. have we sufficient guarantee that this number was actually 

 published on that date ? 



In relation to this, the case of the Bulletin of Miscellaneous 

 Information, published in connection with Kew Gardens, may be 

 noticed. Thanks to the Stationery OfSce, as previously pointed out 



