Vol,. III.] 



CHICORY FAMILY. 



263 



2-6 lobes on the petiole, the uppermost oblong or lanceolate, sessile, acute, much smaller, 

 mostly entire; heads very numerous, 3 // -6 // broad; involucre oblong-cylindric, 2 // ~3 // high, 

 of about 8 linear glaucous principal bracts and several very small outer ones. 



Along' roadsides and in waste places, Quebec and Ontario to New Jersey and Pennsylvania. Also 

 on the Pacific Coast. Naturalized from Europe. Called also Bolgan-leaves, Ballogan. June-Sept. 



3. SERINIA Raf. Fl. Ludov. 149. 1817. 

 [Apogon Ell. Bot. S. C. & Ga. 2: 267. 1824.] 



Low glaucescent branching annual herbs, with alternate clasping entire or lobed leaves, 

 or those of the stem sometimes appearing as if opposite, and few small long-peduncled heads 

 of yellow flowers. Involucre broadly campanulate, its bracts about S, equal, membranous, 

 becoming concave after flowering. Receptacle flat, naked. Rays truncate and 5-toothed at 

 the apex. Anthers sagittate at the base. Style-branches slender. Achenes obovoid, 8-10- 

 ribbed, contracted at the base, rounded at the summit. Pappus none, or a mere vestige. 

 {Greek, small chicory.] 



Three known species, natives of the southern United States. 



i. Serinia oppositifdlia (Raf.) Kuntze. 

 Serinia. (Fig. 3515.) 



Krigia oppositifolia Raf. Fl. Ludov. 57. 1817. 

 Apogon humilis Ell. Bot. S. C. & Ga. 2: 267. 1824. 

 Serinia oppositifolia Kuntze, Rev. Gen. PI. 364. 1891. 



Glabrous throughout, or slightly glandular-pubescent 

 along the ends of the peduncles, branched from the base, 

 4 / -io / high. Basal and lower leaves petioled, oblong-lan- 

 ceolate or spatulate in outline, acute or obtuse, entire, 

 lobed or pinnatifid, 3 / -5 / long, 2 // -6 // wide; upper leaves 

 mainly sessile, clasping, alternate, or appearing as if oppo- 

 site, usually entire, smaller; peduncles very slender, some- 

 times 4 / long; heads 1 J^ // -2 // broad; bracts of the involucre 

 acute or acuminate, about the length of the rays. 



In fields, Missouri (according to Tracy); Kansas to Texas, east 

 to South Carolina and Florida. March-May. 



4. ADOPOGON Neck. Elem. i: 55. 1790. 



[Krigia Schreb. Gen. PI. 532. 1791.] 



Annual or perennial herbs, with scapose or leafy stems, basal or alternate, entire sinuate- 

 dentate or pinnatifid leaves, and small or middle-sized heads of yellow or orange flowers, 

 solitary at the end of the scape or its branches. Involucre campanulate, its herbaceous bracts 

 in 1 or 2 series, with no exterior shorter ones. Receptacle flat, naked. Rays truncate and 5- 

 toothed at the apex. Anthers sagittate at the base. Style-branches slender, obtusish. 

 Achenes turbinate or oblong, 15-20-ribbed, truncate. Pappus in 1 or 2 series, the outer of 

 thin broad rounded scales, the inner of slender naked bristles, or these sometimes wanting 

 in the southwestern A. occidentale. [Greek, a pleasing beard.] 



Five known species, natives of North America. 

 Stem i-leaved and branched above, bearing 2-6 heads. 1. 



Scape naked, monocephalous. 



Head about 1' broad; pappus-bristles 12-20; perennial. 2. 



Head 3" -7" broad; pappus-bristles 5-7; annuals. 



Bracts of the involucre 5-8, remaining erect, firm, keeled. 3. 



Bracts of the involucre 8-18, at length refiexed, thin. 4. 



A. Virginicnm. 

 A. Dandelion. 



A. 

 A. 



occidentale. 

 Carolinian u m. 



i. Adopogon Virginicum (L.) Kuntze. 

 Cynthia. Virginia Goatsbeard. (Fig. 3516.) 



Tragopogon Virginicum L,. Sp. PI. 789. 1753. 

 Krigia amplexicaulis Nutt. Gen. 2: 127. 1818. 

 Cynthia Virginica Don, Edinb. Phil. Journ. 12: 309. 1829. 

 Adopogon Virginicum Kuntze, Rev. Gen. PI. 304. 1891. 



Perennial, glabrous and glaucous; stem i-2 high, 

 i-leaved and branched above, bearing 2-6 long-pedun- 

 cled heads at its summit and an oblong clasping leaf 

 below the middle. Basal leaves tufted, runcinate, sin- 

 uate, denticulate, or entire, 2 / -7 / long, narrowed into 

 margined petioles; heads about 1%.' broad; involucre 

 of 9-15 lanceolate nerveless bracts 3 // -4 // long; achenes 

 nearly oblong; pappus of 10-15 small oblong scales 

 and an equal or greater number of capillary bristles; 

 flowers orange to reddish orange. 



In moist woods and meadows, Massachusetts to southern 

 Ontario and Manitoba, Georgia, Kentucky, Missouri and 

 Kansas. Ascends to 4000 ft. in Virginia. May-Oct. 



