OF PLANTS CALLED COMPOSITjE. 289 



Frutices (AmericEe sequinoctialis,) pubescentes, scabri. 

 YoWsl opposita, indivisa.' Capitulai cori/mbosa, v. terminalia, 

 V. awillaria. Involucri stibovati foliola nervosa, ohtusa. 

 Palese receptaculi convexi distinct(S, flgura et tecotura fere 

 involucri. CoroUse luteo-purpurece (Swartz), glabra, la- 

 einiis dinerviis. Achenium mbcylindraceum v. obsolete 

 angulatum, glabrum v. pubescens, callo baseos subobliquo. 

 Pappus persistens albus, nitens ; radiis simplici serie 

 subulatis, indivisis, superne denticulatis. 



Obs. In Sir Joseph Banks's Herbarium there are two 

 plants very nearly related to Calea, difiPering from it 

 merely in having a radius of ligular female florets. If 

 this difference be considered sufficient to constitute a 

 genus, it may be named Caleade. The first of these 

 plants (C. urticifolia), with neaiiy ovate-acute crenated 

 leaves, found by Houston near Vera Cruz, is Solidago 

 urticafolia of Miller, by whom it appears to have been 

 cultivated. The second, vs^ith deeply lobed or pinnatifid 

 leaves (C pinnatifida), was lately sent from Brazil by 

 Mr. Sellow. 



The second Linnean species, Calea oppositifolia, has very 

 little affinity to the first. In attending merely to the 

 technical character of Santolina, it might be referred to 

 that genus; but it differs so widely, both in other points of [no 

 structure and in habit, that there can be no question 

 of the propriety of separating it, which may be done by the 

 following character, and under the name of 



ISOCARPHA. 



Beceptaculum conicum : paleis distinctis, conformibus : 

 extimis involucrum constituentibus. ■ Flosculi tubulosi, 

 uniformes, hermaphroditi. Anthera basi muticse. Stig- 

 mata appendice elongato, hispidulo, acuto. Achenium 

 prisraaticum : pappo nullo. 



Herbse (Americae eequinoctialis). Folia opposita {vel 



' Corolla communis, Linn. 



19 



