490 SYSTEMATIC BOTANY. 



structure of the seed. He regards the sterile stamens as perigones, which 

 must be rigidly shown by the history of their development. 



ORCHIDACE^E. New genera : Dialissa Lindl., (a century of new genera 

 and species of Orchidaceous plants, in Ann. of Nat. Hist., xv, p. 107,) allied 

 to Stelis, from New Granada; Hekia Lindl. (Bot. Reg. 1845, Misc. p. 18), 

 near TrichopiUa, from Guyaquil ; Porpax Lindl. (ib. p. 63), near Eria, from 

 the East Indies; Galeottia Rich. Galeott. (Orchidographie Mexicaine, in 

 Ann. Sc. Nat. iii, 3, p. 25), near Maxillaria; Galeoglossum and Ocampoa, 

 Rich. Gal. (ib. p. 31), two Neottieae. Liudley has given systematic notices 

 of Miltonia, (Bot. Reg. t. 8), of Odontoglossum (ib. Misc. p. 49-59), and of 

 several sections of Epidendrum (ib. pp. 22-9 and 65-79) : the Monograph 

 last mentioned, whicli was commenced some time since, is thus completed. 



IRIDACE^E. Herbert has continued his description of Crocus. (Bot. Reg. 

 1845, t. 37, and Misc. pp. 1-8, 31, 80-3.) 



TACCACE^E. This new genus, Thismia, Griff., from Tenasserim, borders 

 closely upon this group, (having a remarkable affinity with Burmannia), it is 

 a monocotyledonous representative of the Rhizanthea3. (Linn. Transact, 

 xix, p. 343.) 



AMARYLLIDACEJS. Herbert separates Pluedranassa Herb. = H. dubim 

 Knt., from Hamantlms. (Bot. Reg. 1845, Misc. p. 16.) 



LILIACE^:. New genus: Chrysobactron J. D. Hook. (Antarct. Voy., 

 p. 72, pi. 44, 45), vide supra. Lindley has written a short Monograph of 

 the New Holland genus, Blandfordia. (Bot. Reg. 1845, tab. xviii.) 



JUNCACEJE. Decaisne has described a dioecious plant Goudotia, new genus, 

 growing upon the Andes of New Granada, at an elevation of 5000 meters, 

 and forming a turf; he arranges it among the Juncaceae, (Ann. Sc. Nat. 3, 4, 

 p. 84), from which it differs in its coloured six-partite perigone, which is 

 surrounded by a tripartite involucre ; the position assigned to it above, 

 especially as the structure of the seed is not known, can, therefore, only be 

 regarded as provisional. 



CYPEKACEJS. Schlechtendal has published some remarks upon Selena 

 (Bot. Zeit., 1845, Nos. 28, 30). 



GRAMINACE^E. Mohl considers the 2 palese as the products of different 

 axes, and thus endeavours to overthrow R. Brown's theory of the flowers of 

 Grasses, in which a viviparous monstrosity of Poa alpina formed the basis of 

 the argument supporting his view (Bot. Zeit., 1845, pp. 33-7). I have en- 

 deavoured to defend the view that these organs are bracts (Gott. gel. Anz., 

 pp. 683-7). Parlatore has formed the genus Antinoria of Airopsis agrostidea 

 D. C., Aira agrostidea Guss. (El. palermit, i, p. 92). 



FERNS. The eighth part of the first volume of Kunze's illustrated work 

 (Die Earnkrauter in colorirten .Abbildungen, Leipsig, 1845, p. 4), has been 

 published, containing pi. 71-80. Presl has written a supplement to his 

 Pteridographia, in which the number of genera and species appears to be 



