FLORA OF SOUTH AMRRlCA AND IHE PACIFIC. 313 



Ilelianthus rivularis, Poe/;. PL Exsicc. n. 716. — Tetrachsete 

 Chilensis, {H. et A.) nist, — Banks of the River VaUUvia, 

 Chili; Bridges, {n. 764.) — The leaves are slightly scabrous 

 on the upper side ; the ovaries in our specimens are young, 

 but appear to have a pappus of four equal bristles, so very 

 caducous, that we have seldom been able to detect the whole 

 number, although the marks where the others have existed 

 are visible. De Candolle describes the mature acheniuni 

 with only two bristles. The branches of the style of the disk 

 are tipped with a very short fleshy cone, on which account 

 we have placed the genus with the Senecionidece, while De 

 Candolle places it in Asteroidece, near Siegesbeckia. 



Leighia. Cass. 

 * FoUis alternis. 



1135. (1.) Leighia anchuscefolia {DC. Prodr. v. p. oBO) -, 

 herbacea strigoso-pubescens, foliis alternis sessilibus calloso- 

 strigosis lineari-oblongis subintegerrimis triplinervibus, nervis 

 lateralibus prope margines, pedunculis corymbosis elongatis 

 parve-foliatis, involucri 3 — 4-serialis strigosi disco brevioris 

 foliolis oblongo-lanceolalis ext. minoribus apice recurvis, 

 achenio parce sericeo. — Top of the hill of Monte Video; 

 Tweedie^ {n. 865.) 



1136. (2.) L. stenophylla (H. & A.); herbacea strigoso- 

 hispida, foliis alternis subsessilibus linearibus integerrimis 

 trinerviis, nervis lateralibus marginalibus subobsoletis, pedun- 

 culo solitario paullo ante apicem aphyllo, involucri disco 

 brevioris canescentis pluriserialis foliolis lanceolatis acu- 

 minatis ext. apice recurvis, achenio parce sericeo. — Buenos 

 Ay res and Monte Video; Ticeedie, {n. 870 and 875.) — Perhaps 

 our plant is the same as L. immarginata, DC. Prodr. p. 581. ; 

 but the stem is scabrous, and the marginal nerves of the leaves 

 can always be traced. 



1137. (3.) L. Gilliesii (H. & A.); sufFruticosa ? scabra, 

 foliis alternis brevi-petiolatis anguste lanceolatis attenuatis 

 basi in petiolum acuminatis integei-rimis trinerviis, nervis 

 lateralibus prope marginem, pedunculo solitario valde elon- 



Vol. III.— No. 22. 2 s 



