OF ARTS AND SCIENCES. 103 



to establish by itself, between Atriplex and Grayia, unrler the name of 

 its discoverer, Dr. George Suckley, U. S. A., one of the naturalists 

 of the exploration across the Continent under Governor Stevens.* 



APPENDIX. 



CHAPMANNIA Torr. & Gray. This genus was described from 

 imperfect materials in the Flora of North America (I, p. 355), taken 

 up by Mr. Bentham in his paper upon Arachis, and then the character 

 added to in Fl. N. Amer. 1, p. 692, — all this upon a wrong view as to 

 two kinds of blossoms, which Mr. Bentham subsequently corrected. 

 Good specimens, with well developed flowers, are in Rugel's collection ; 

 and I have just received others fi-om an esteemed correspondent, Dr. 

 Feay of Savannah, collected on Pease River, Florida. A few par- 

 ticulars are added to complete or slightly correct the character as 

 given in Bentham and Hooker's Genera Plantarum, 1, p. 517, and 

 to bring out more prominently the differences between it and Stylo- 

 santlies. 



The broadly obovate vexillum and alge are only slightly unguiculate, 

 not at all auriculate at base, but the latter nearly as equal-sided as the 

 former. In anthesis they are widely spreading, and distant from the 

 carina. The latter is shorter and straight (only in Rugel's specimens 

 is there an obliquity giving the appearance as of a slight curvature) ; 

 its two petals are united almost completely into an oval or somewhat 

 obovate piece, which is not auriculate at base, very obtuse and emar- 

 ginate at the apex, convolute as if into a tube, one edge slightly over 

 lapping, or slightly open in full anthesis. The andrcecium is only half 

 the length of the carina, which encloses it or, when it opens down the 

 upper side, allows the anthers to project from towards its base. The 



* Subtribus EUROTIEtE. Theca, e bracteis pi. m. coiiduplicatis coalitis con 

 stans, obcompressa, rarissime triptera. 



1. Gratia. Theca nuda, integerrima, scariosa, orbiculata, plana, sama- 

 roidea, alato-marginata. Radicula infera. Flores dioici. 



2. SucKLEYA. Theca nuda, subhastata, complanata, marginibus herbacco- 

 cristatis, apice bidentato. Radicula supera. Flores monoici. — S. petiolaris. 

 Obione Suckleyana Torr. Atriplex Suckleyaua Watson, 1. c. 



3. EuROTiA. Theca villosissima, turgida, nee marginata nee aristata, apice 

 bifida. Radicula infera. Flores dioici. 



4. Ceratocarpds. Theca cuneata, obcompresso-plana, biaristata. Radi- 

 cula infera. Flores monoici. 



