a a ee 
A tl a mi a na 
ee eee 
Se OO 
187 
-DONIA elutinosa. 
Limy-leaved Donia. 
4 aoa 
SYNGENESIA POLYGAMIA SUPERFLUA. 
Nat. ord. Corymbirer®. Jussieu gen. 177. 
Div. IT. Receptaculum nudum. Semen papposum. Flores radiati; 
(in Tussilagine et Senecione partim flosculosi.) 
DONIA. Recept. nudum. Pappus setaceus, caducus. . Calyx imbri- 
catus, hemisphericus. Brown in Hort. Kew. ed. 2, 5. 82. 
* 
‘ 
D. glutinosa, frutescens ; foliis oblongo-obcuneatis sessilibus serratis, -caly- 
cinis squamis linearibus erectis. Pursh amer. sept. 2.559; ( in obs. ad 
DonraAM squatrosam). 
Donia glutinosa. Brown in Hort. Kew. ed. 2. 5. 82. 
Doronicum glutinosum. Willd. sp. pl. 3. 2115. 
Aster glutinosus. Cavan. ic. 2. 52. t. 168. Desfontaines in ann. du mus 
séum. 2. 34, 
Suffrutex sempervirens erectus glabro-viscosus erectissimé ramosus, bi- 
ea caulis teres, pallidus; rami albidi, angulati, flecuosi, uniflori, 
Joliost. Folia distantia, sparsa, erecto-patentia, obovato-oblonga, mucronato- 
acuta, reticulato-venosa viscoso-porosa, margine serrulato-scabra, acute dentata 
vel nunc dentibus nonnullis acutis tantummodo wersits apicem incisa, ampleai- 
caulia, trinervi-decurrentia, lobulis 2 baseos ex eorum margine interiori longé 
infra rachidem folii adnatis ramo ; floralia pauca ( subtrina), subdifformia, 
ovato-v. oblongo-lanceolata, Flores lutei, terminates, . subsessiles, . solitarit. 
Cal. plurimo ordine polyphyllus, herbaceus, squarroso-imbricatus,  visco co- 
pioso obductus; foliola bast arcté appressa, lanceolato-linearia, extius convexi- 
uscula, inferiora mucronata angustiora recurvo-divaricata, superiora erectiora 
patula, suprema membranosa, albicantia, appressa. Radius wuniseriatus, 
multiflosculosus, duplo longior calyce, flosculis longé tubulosis, apice bidenti- 
culato-emarginatis, biplicatis; germ. turbinato-oblongum quinerve, anguloe 
sum; pappus sessilis aristaceus, plumosus paucus, tnegualis, incurvuluse 
stigmata linearia, exserta tubo. Discus flosculis luteo-pallentibus, equalibus 
calyci, glabris, dentibus erectis acutis: anth. incluse, polline flavo: stigmata, 
2 linearia tota exserta: germ. radii simile. Receptaculum planum, JSoveola- 
qum, Soveolarum marginibus dentato-scabratum. 
A genus instituted by Mr. Brown,.in the late edition of 
the Hortus Kewensis. The character principally relied upon 
for technical distinction, is a bristly caducous seed-crown or 
pappus. 
The present species is native of Mexico, and was first 
introduced by Mr. Aylmer Bourke Lambert in 1803. We 
have another (squarrosus) in our collections, which comes 
from the banks of the Missouri. ry 
