332 COMPOSITiE. Tcssilago. 



6. TUSSILAGO. Tourn. ; Endl. gen. 2288. coltsfoot. 



[ From the Latin, tussis, a cough ; for the cure of which the plant is used.] 



Heads many-flowered, heterogamous. Flowers of the ray very narrowly ligulate, in several 

 series, pistillate ; those of the disk few, tubular, staminate. Scales of the involucre oblong, 

 obtuse, somewhat in a single series. Receptacle naked. Antliers scarcely caudate. Style 

 abortive in the flowers of the disk ; in those of the ray 2-cleft ; the branches somewhat 

 terete. Achenia of the ray cylindrical-oblong, smooth ; in the disk abortive. Pappus of 

 the ray-flowers in many series ; of the disk in a single series, capillary. — A perennial herb. 

 Rhizoma rather thick. Leaves radical, appearing later than the flowers, cordate, angular- 

 toothed, pelioled. Scape clothed with scaly bracts, woolly, bearing a single head. Flowers 

 yellow. 



1. TussiLAGo Farfara, Linti. Common Coltsfoot. 



Engl. hot. t. 429 ; Willd. sp. 3. p. 1967 ; Torr. compend. p. 307; Beck, hot. p. 200; 

 DC. prodr. 5. p. 208 ; Torr. ^ Gr. fl. N. Am. 2. p. 94. 



Caudex short. Leaves (when fully grown) 3-5 inches in diameter, smoothish above ; the 

 under surface and the long petiole whitish and tomentose ; the margin irregularly toothed and 

 angular, with the points of the teeth discolored. Scape 4-8 inches high, clothed with oblong 

 brownish scales. Head of flowers about three-fourths of an inch in diameter. 



Moist clayey banks ; perfectly naturalized in the northern and western part of the State. 

 Fl. March - April. A native of Europe. The dried leaves are sometimes smoked for the 

 relief of asthma. 



Tribe HI. ASTEROIDE^. Less. 



Heads heterogamous or sometimes Jiomogamous, rarehj dicecious. Style {in the perfect 



flowers) cylindraceous above ; the brunches flat or flattish, mostly linear or lanceolate, 



the up>per part equally and minutely pubescent externally ; the conspicuous stigmatic 



lines, terminating where the exterior pubescence commences, not confluent. — Leaves 



alternate, or rarely opposite. 



CONSPECTUS OF THE SUBTRIBES. 



Sublribc I. Asterineje. Heads heterogamous and radiate, or homogamous. Receptacle seldom chaffy. Anthers not 

 caudate. Leaves alternate. 

 Div. 1. AsTKREai. Heads radiate, hcterochromous (rays never yellow). 

 Div. 2. C11RYSOCOME.S:. Heads radiate or homogamous, homochromous (both the ray and the disk yellow), 



Subtribo II. BACCiiAniDEa;. Pleads dioecious or heterogamous, but never radiate ; the pistillate flowers tubular, slender 

 or filiform, in several series. Receptacle not chaffy. Anthers not caudate. 



Subtribe III. TARCiioNANTiiEiE. Heads dioecious or heterogamous, but never radiate j the pistillate flowers tubular anu 

 very slender, mostly in several series. Anthers caudate. 



Subtribe IV. Inulea:. Heads heterogamous and radiate, or homogamous and discoid, never dicecious. Receptacle not 

 chaffy. Anthers caudate. Leaves alternate. 



