164 SYNGENE3IA. SUPEUFLUA. 



Flowers large and yellow. Calix hemispherical, closely 

 imbricated, the scales terminating- in foliaceous revolute 

 points, abuiidantiy secreting a resinous fluid which often 

 by its tenacity prevents the expansion of many of the ra- 

 dial florets. Kays lineai'-lanceolate. Seed obovate, com- 

 pressed, smooth. Pappus consisting of about 4 decidu- 

 ous chaify setae. Receptacle flat, naked, cellularly punc- 

 tured. Hab. On rocky calcareous hills near the lead- 

 mines of the Meremek, Missisippi, a few miles from St. 

 Louis. — Mr. J. Bradbury: also abundant on the broken 

 banks of the Missouri. In these situations it is a biennial, 

 cultivated in London k becomes sufrruticose, even when 

 exposed to the climate. May it not be a variety of I), gin- 

 tinosa, deteriorated in the term of its duration by the seve- 

 rity of the climates into whicii it has gradually been ex- 

 tended? Although arranged in a different order of the 

 Linnzean system it appears by no means indistinctly al- 

 lied to the genus Cavihamus, and the orderof Ci>rAuo6E. 



PHAL.E. 



^(j2. arnica, l. 



Calix hemispherical, leaflets equal, mostly iu 

 a simple series? Radial ihwcis often produciiii^ 

 5 filaments destitute ot* antliers. Receptacle na- 

 ked. Faypus simple, scabrous. 



A polymorphous and divided genus? Some of the spe- 

 cies caulescent and also shrubby; tiiose of Kurope and 

 North America, with a ^ew others, often scapigerous, 

 scapes l-Howered, sometimes producing 1 or 2 pair of 

 opposite leaves; flowers mostly yellow. 



S?ECiEs. 1. A. montmia. /3- f'-^^geJis Jl. fuJgcns. Pii. 

 2. p. 527. Scarcely dissimilar to specimens of the alpine 

 variety in the Iianksian herbarium. Hab. On the margins 

 of marshy springs and in depressed situations, from the 

 Arikarees to Fort Mandan, and probably as far as the 

 ?iIo»mtains. Flowering in July. Flowers bright yellow, 

 Oflg, Minutely pubescent. Scape about 12 Indies high, 

 mostly with 2 pair of leaves, terminated by 1 rarely 3 

 flowers. Leaves oblong-lanceolate, 3 to 5 nerved; sum- 

 mit of the caudex tomentose. Cullx a simple series or 

 leaflets, somew hat hirsute. Tube of the florets pilose; 

 lays wiliiout fiLments; seed hirsute, slender. A. plantw 

 ^inea, of I'ursh from the specimen which I have seen, ap- 

 pears also a mere variety of t'le above. 



^. Doro7iicum. o-mulicivtle. Doroidcinn nudlcaiilc. Mich. 

 2. p. 121. .i. Clavtoni. Vn. 4. ^navitima. 



