OF ARTS AND SCIENCES. 183 



ceis rectis corapHcatis corolla paullo brevioribus achenia compressa calva 

 amplectentibus (95). — This is apparently a congener of Bentham's An- 

 drieuxia Quitensis (an unfounded genus, as A. Mexicana is a Heliopsis) 

 and of his Gymnopsis ? Costaricensis, as well as of Steetz's G. vulca- 

 nica, although the broader and emarginate-truncate young achenia are 

 much compressed, and not in the least tetragonal. There is no trace of 

 a pappus. Not to multiply genera upon inconsiderable characters, 

 these should probably all be referred to Gymnolomia, Kunth ( Gymnop- 

 sis, DC, excl. Aldama). Heads in the present species 3|^ lines long; 

 rays 6 to 8, yellow, 4 or 5 lines long. 



Aldmna ( Gymnopsis, DC.) Schiedeana (98) ; var. foliis elongato-lan- 

 ceolatis (99) ; and A. uniserialis. Gray, PI. Wright., no number. 



Simsia lagascceformis, Benth. PL Hartw. p. 19, an DC? (378). 



Oyedma ovulifolia (sp. nov.) : scabrida ; foliis ovalibus utrinque acu- 

 tis obsolete denticulatis scabris ; involucre disco dimidio breviori, squa- 

 mis appressis inappendiculatis rotundatis. — Folia submembi'anacea, 

 4-pollicaria, triplinervia, rete venarum l?lxa ; petiole brevi. Capitula 

 iis 0. verhesinoidis dimidio minora (97). — This is a true Oyedcea, the 

 species well marked by the short involucre, the rounded and obtuse 

 scales of which altogether want the foliaceous tips. Rays, achenia, and 

 pappus much as in 0. verbesinoides, but smaller. The plant was found 

 on the road between Wartenberg and Huaulta, and is said by the col- 

 lector to " climb high up on trees " : there may have been some mistake 

 about this, through some transposition of memoranda. 



Bidens tereticaidis, DC, forma foliolo terminali angustiore (67). — 

 Lessing may have been I'ight in referring this to B. squarrosa (which 

 I have, as collected by Miss Alderson at Caracas, and which is also 

 Fendler's no. 696), the principal difference being in the smaller size 

 and greater number of the heads. The achenia are similar, and in both 

 ciliate with strong divergent bristles down their whole length. For 

 " apice ciliatis " De Candolle probably meant " versus apicem," but the 

 ciliation extends to the base in Berlandier's as well as in the present 

 specimens. There is, however, in B. squarrosa a crown of erect bris- 

 tles fringing the apex of the achenium, between the awns, of which 

 there is no trace in B. tereticaulis. 



Verhesina persiccefolia, DC. (84, 91), in which, as in Berlandier's 

 original specimens, the leaves are not " elongato-lineari-lanceolatis " (as 

 indeed the dimensions assigned by De Candolle testify), but oblong- 

 lanceolate or oblong, tapering to both ends. 



