natural Family of Plants called Composita. 109 
two plants are the only published species of this genus, for which 
the name of Calea should be retained, and which may be distin- 
guished by the following characters : 3 
CALEA. 
Calez species Linnei. 
Involucrum* imbricatum. Receptaculum paleaceum. — Flosculi 
tubulosi, uniformes, hermaphroditi. Anthere basi mutice. 
Stigmata acuta. Pappus paleaceus: radiis uninerviis, pinna- 
tifido-striatis. 
Fratices. (Americae. PERS PARA scabri. Folia op- 
posita, indivisa. Capitula} corymbosa, v..terminalia, v. avillaria. 
Involucri subovati foliola nervosa, obtusa. Paleæ receptaculi convezi 
distincte, figura et textura fere involucri. Corolle luteo-purpuree 
(Swartz), glabre, laciniis dinerviis. Achenium subcylindraceum 
v. obsolete angulatum, glabrum v. pubescens, callo baseos subobliquo. 
Pappus persistens albus, nitens; radiis simplici serie subulatis, 
indivisis, superne denticulatis. 
Ons. In Sir Joseph Banks's Herbarium there are two plants 
very nearly related to Calea, differing 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 Caleacte. The 
first of these plants (C. urticifolia), with nearly ovate acute 
. crenated leaves, found by Houston near Vera Cruz, is Solidago 
_urticefolia of Miller, by whom it appears to have been culti- 
M vated. ‘The second, with deeply lobed or pinnatifid leaves 
(C. pinnatifida), was lately sent from Brazil by Mr. Sellow. 
— 'Yhe second Linnean species, Calea oppositifolia, has very little 
affinity to the first. In attending merely to the technical cha- 
racter of Santolina, it might be referred to that genus ; but it dif- 
* Calyx communis Linnei, t Corolla communis Linn. : 
ters. 
