OF ARTS AND SCIENCES. 119 



molopium tenerrimum of Nees, which, however, is distinguished bj its 

 smoothness as well as smaller size, the more exserted ligules, uniserial 

 pappus, and glabrous, mostly four-ribbed achenia. It belongs therefore 

 to the following section. 



§3. TETRAMOLOPIUM {Tetramolopiim, Nees, pro parte).— 

 Achenia breviuscula, quadricostata, nempe costis 2 marginalibus vali- 

 dis, 2 facialibus angustioribus, his raro inconspicuis quandoque gemi- 

 natis. Pappus uniserialis. Capitula nunc solitaria ligulis exsertis, 

 nunc parva corymbosa ligulis pluriserialibus discum haud superantibus, 

 floribus disci paucis vel paucissimis. 



V. TENERRIMA (Aster tenemmus, Less. Tetramolopium tenerrimum, 

 Nees) : suffruticulosa, glabra, CiKspitoso-multicaulis ; foliis in caulibus 

 (brevissimis seu decumbentibus) confertis lineai'i-spathulatis uninerviis 

 aveniis parce hispidulo-ciliatis basi longe attenuatis ; pedunculis soli- 

 tariis gracilibus bracteis pluribus setaceis instructis ; ligulis uniseriatis 

 discum pluriflorum superantibus tubo subfequilongis ; acheniis obovato- 

 oblongis 4-5-costatis ; pappo uniseriali aequaU. — Oahu, Chamisso, 

 Macrae. The character from a specimen collected by Macrae. 



V. Remti (sp. nov.) : fruticosa, corymboso-ramosissima, glabra; 

 foliis secus ramulos confertissimis acerosis deorsum leviter attenuatis 

 supra canaliculatis ; pedunculis terminalibus solitariis elongatis puberulis 

 bracteis parvis setaceis instructis monocephalis ; involucri hemisphaerici 

 squamis lineari-subulatis margine vix scariosis ; ligulis biseriatis discum 

 pluriflorum superantibus tubo breviusculo subduplo longioribus ; ache- 

 niis appresse hirsutulis obovato-oblongis quadricostatis ; pappo albo uni- 

 seriali. — Maui, Sandwich Islands, coll. Remy, no. 239. — This is a 

 shrub, at least a foot or two in height, with rigid branches squarrose 

 with the crowded leaf-scars, the laricine leaves much crowded on the 

 ultimate branchlets ; the heads about as large as those of V. tenerrima. 

 It is the only species known in which the ligules are decidedly longer 

 than their tube. Although it is not surprising that Lessing should have 

 failed to recognize the close relationship of his Erigeron Upidotus with 

 his Aster tenerrimus, he would surely have associated them had he 

 known the present species, which, with the inflorescence and the 

 exserted ligules of the former, has the habit of the latter, especially 

 of the variety arhuscula. 



V. Chamissonis [Erigeron lepidotics, Less. E. paucijhrus, Hook. 

 & Arn.) : fruticosa, ramosissima, glabella ; ramulis corymbosis puberu- 

 lis usque ad apicem foliosissimis ; foliis lineari-lanceolatis seu linearibus 



