OF ARTS AND SCIENCES. 161 



56. Franserta pumila, Nutt. A single specimen, without flow- 

 ers ; perhaps a dwarf and more canescent state of the preceding. 



57. Hymenoclea sp. without flowers or fruit, the branches bearing 

 abnormal growths, incited by the punctures of insects. Doubtless one 

 of the two published species. 



58. Heliopsis buphthalmoides, Dunah H. canescens, H. B. K. 

 Forma minor. 



59. Aldama uniserialis, Gray, PI. Lindh. 2, p. 228. Somewhat 

 depauperate specimens, well agreeing with the Texan plant. 



60. Viguiera deltoidea (sp. nov.) : herbacea, pubero-scaberula, 

 ramosa ; ramis polycephalis ; foliis inferioribus oppositis, superioribus 

 alternis, omnibus deltoideis vel subcordatis obtusis subintegerrimis lon- 

 giuscule seu breviuscule petiolatis supra scabris subtus albido-pubes- 

 centibus ; capitulis corymbosis ; involucre biseriali disco breviori, squa- 

 mis lineari-oblongis obtusiusculis canescentibus ; receptaculo breviter 

 conico, paleis latis mucronatis ; acheniis prsesertim ad margines longe 

 villosis ; pappi aristis breviusculis paleis intermediis latis bis terve longi- 

 oribus. — Folia 12--2 poll, longa, basi 1 - Is^ lata, trinervia; petioli 

 3-6 lin. longi. Pedunculi ^ - 2 pollicares. Capitula semipollicaria. 

 Ligulte 6-8, oblongae, 10-nerves. Achenia matura fere 2 lin. longa : 

 pappi paleee ex angulis ortse lanceolatae, in aristam hispidam corolla 

 breviorem product.^ ; intermedije utrinque 2 lat^e vel 1 latissimse, trun- 

 catae, subintegrje, firmae, § lin. altse. — A well-marked species. Plant 

 apparently more than two feet high, the base of the stem not seen. 



61. Viguiera tomentosa (sp. nov.): fruticosa; foliis oppositis 

 petiolatis subcordatis (raro subhastatis) sensim acuminatis serratis pube 

 moUi utrinque tomentosis subtus incanis ; capitulis corymbosis ; invo- 

 lucri discum sub^equantis squamis 1 - 2-serialibus lanceolatis incanis ; 

 receptaculo parvo subconico, paleis lanceolatis muticis ; acheniis villosis ; 

 aristas 2 longis et squamellas plures parvas gerentibus. — Frutex vel 

 suffrutex ramosus, ramulis junioribus moUiter pubescentibus. Folia 

 (cum petiolo 3-6 lin. longo) 3 - 5-polHcaria, e basi levit'er cordata 

 (nunc truncata, raro hastata) sensim attenuata, argute seri'ata, basi 

 trinervia ; floralia parva, linearia. Pedunculi 1 - 3-pollicaria. Capi- 

 tula quam prgecedentis pauUo minora. Liguloe ampte, pollicares, cir- 

 citer 15-nerves. Pappi aristae subulatae, achenio eequilongge ; squamellae 

 intermedijE utrinque 4-6 angustae vel 2 profunde 2 - 3-fida, laciniato- 

 fimbriatge, aristis multo breviores. — A true Viguiera, with the habit 

 rather of Oyedcea. 



VOL. V. 21 



