Vol. III.] 



CHICORY FAMILY. 



265 



5. ARNOSERIS Gaertn. Fr. & Sem. 2: 355. pi. 157. 1791. 



A low annual scapose herb, glabrous, or nearly so, with tufted basal dentate or nearly 

 entire leaves. Scapes several or numerous, simple or branched, upwardly thickened below 

 the solitary heads of yellow flowers. Involucre campanulate, its bracts in 1 series, narrow, 

 equal, thickened and keeled on the back after flowering, rarely with a few outer minute 

 ones. Receptacle flat, pitted, not chaffy. Anthers sagittate. Style-branches obtuse. 

 Achenes oval, 8-10-ribbed, narrowed below, truncate, or with a denticulate margin. Pappus 

 none. [Greek, lamb-succory.] 



A monotypic genus of western Europe. 



i. Arnoseris minima (L,.) Dumort. 

 Lamb Succory. (Fig. 3520.) 



Hyoseris minima L. Sp. PI. 879. 1753. 

 Arnoseris pusilla Gaertn. Fr. & Sem. 2: 355. 1791. 

 Arnoseris minima Dumort. Fl. Belg. 63. 1827. 



Scapes slender, 3 / -i2 / high, leafless, simple, 

 or with 1-4 branches mostly above the middle, 

 gradually thickened and hollow upward for a 

 space of an inch or more below the heads. 

 Leaves oblanceolate, obovate, or oblong, \ f -jf 

 long, 3 // -io // wide, usually coarsely and sharply 

 toothed, narrowed into margined petioles; heads 

 S" broad, or less; bracts of the involucre linear- 

 lanceolate, acuminate, strongly keeled after 

 flowering, 2 // -4 // long, curving over the achenes. 



Mount Desert Island, Maine. Fugitive from 

 Europe. Also called Dwarf Swine's- or Hog's-Suc- 

 cory, Dwarf Nipplewort. Summer. 



6. HYPOCHAERIS L. Sp. PI. 810. 1753. 



Mostly perennial herbs, with scapose, often branched stems and mostly basal tufted 

 leaves, pinnatifid to entire, those of the scapes few, scale- like, very small, or none. Heads 

 mostly large, long-peduncled. Flowers yellow. Involucre oblong-cylindric to campanulate, 

 its bracts herbaceous, imbricated in several series, appressed, the outer smaller. Receptacle 

 flat, chaffy. Anthers sagittate. Style-branches slender, obtusish. Achenes oblong to 

 linear, 10-ribbed, somewhat narrowed below, contracted above into a long or short beak, or 

 the outer truncate. Pappus of 1 row of plumose bristles, sometimes with some shorter 

 simple ones. [Greek, for pigs, which are fond of its roots.] 



About 50 species, natives of Europe, Asia and South America. 



i. Hypochaeris radicata L,. Long- 

 rooted Cat's-ear. Gosmore. 

 (Fig. 3521.) 

 Hypochaeris radical a L. Sp. PI. 811. 1753. 



Perennial; stems several together, glabrous, 

 slender, i-2 high, bracted, or rarely simple, 

 bearing a few scales. Leaves spreading on 

 the ground, oblanceolate to obovate in out- 

 line, pinnatifid-lobed to dentate, 2 '-6' long, 

 hirsute on both sides; involucre oblong-cyl- 

 indric, about 1/ high, its bracts glabrous, or 

 sparingly pubescent; heads i / broad or more; 

 chaff of the receptacle of narrow soft pointed 

 scales; achenes rough, all with very slender 

 beaks longer than the body; flowers longer 

 than the involucre. 



In waste places, southern New Jersey. Also 

 in California. Adventive or naturalized from 

 Europe. Native also of Asia. May-Oct. 



Hypochaeris glabra L., the smooth Cat's-ear, a 

 smaller species, with nearly or quite glabrous 

 leaves, flowers scarcely longer than the involucre, and the outer achenes truncate, has been found as 

 a waif in Maine, and is naturalized or adventive on the Pacific coast. 



