Carduus.] COMPOSITE. 30 1 



4 

 I 



2. H. ? laciniatum ; caule ramoso, foliis profunde pinnatifido-Iaciniatis, laciniis angusto- 

 linearibus subfiliformibus. 



Hab. Dry plains of the Columbia, from the Rocky Mountains to the ocean. Douglas. — This and the 

 precedinn^ plant evidently belongs to one and the same genus, and have entirely the habit of Scorzonera ; but 

 in both, the hairs of the pappus are few in number (about 10), mther harsh and rigid, of a brownish or 

 tawny hue, singularly dilated at the very base, with the upper part very minutely scabrous. Hence it will 

 be seen to accord in a very important particular with ffi/menonema of Cassini, (a genus supposed to be 

 peculiar to the eastern parts of the Mediterranean region :) but that author describes the hairs of the pappus 

 as bearded (barbes) above, and Lcssing calls it feathery. Both our plants appear to be annual. 



13. KRIGIA. Willd, 



Involucrum polyphyllum, simplex. Receptaculum nudum. Achenimn turbinatum. 

 Pappus biserialis; serie exL coroniformi, esquamis5-8 mcmbranaceisbrcvibus; 2«^. csetis 

 paucis (5-24), scabris. 



1. K, Virginica; glauca, foliis primariis rotundatis integris reliquis lyratis glabris, scapo 

 unifloro glabro demum foliis longlore, calyce glabro. Nutt — Willd, Sp. PL p. 1618. 

 Pursh^ FL Am. v. 2. p. 504. BifjeL PL Bost ed. 2. /?. 289. — Hyoseris Virginica. Linn. Sp. 

 PL p. 1138. Mich. Am. v. 2. p. 88, 



Hab, Canada. Michaux. Pursh. 



Trib. II. Cynare^. Lessing.* 



Subtrib, I. Centaurie^e. Less. ' 



14. CENTAUREA. Linn, 



Involucrum imbricatuni. Beceptaculum setosum. Pappus simplex aut nullus. Cor. 

 radii seu floris neutri, si adest, 5-partita. 



1. C, nigra; involucri squamis ovatis pectinato-fimbriatis patulis, foliis radicalibus 

 angulato-Iyratis, caulinis oblongis, radio nullo, — Linn. Sp. PL p. 1288. E7igL BoL t. 278. 



Hab. Newfoundland. Miss ^ren^ow.— Introduced. 



Subtrib. II. Cauduine^, Less. 



15. ARCTIUM. Linn. 



Involucrum globosum, foliolis squarrosis lanatis. Beceptaculuin paleaceum. Pappus 

 simplex, multiserialis, brevis, pilis singulis valde caducis. — Ylevh^fd dichotomcBy hVm petiolatis 

 ovatis suhius pallidioribus. 



1. A. Lappa. Linn. Sp. PL p. 1149. EngL Bot t. 38. {andt. 2478, A. Bardana.) 



Hab. Canada. Mrs. Percival Mrs. Sheppard. Lake Huron. Dr. Todd. 



16. CARDUUS. Linn. 



Involucrum tumidum, imbricatum, squamis spinosis. Beceptaculum setosum. Pappus 



• Whilst this portion of the Compositm is in the press, I have the great satisfaction of receiving the valuable 

 " Synopsis Generum Compositamm canimque Dispositionis novtB Tentamen" &,-c. of C. F. Lessimg ; and 

 have no hesitation in adopting, as fur as possible, the arrangement of so able an observer, and one who has studied 

 this difficult tribe of plants ^vith the greatest ardour, and under very favourable circumstances. 1 have only to 

 regret, tliat I could not derive the advantage such a work is capable of affording for the whole of the Order. 



