1314 CICHOEIACEAE 



sessile by narrow bases: panicle commonly elongated: peduncles rather rigid: in- 

 volucres 5-6 mm. long; inner bracts narrowly linear-lanceolate: achenes columnar, 

 2-2.5 mm. long: pappus tawny. 



In dry woods and clearings, Nova Scotia to Minnesota, south to Georgia, Missouri and 

 Kansas. Summer and fall. 



8. Hieracium longipilum Torr. Foliage conspicuously shaggy with long coarse 

 hairs. Stems erect, 4-12 dm. tall, leafy to the middle, paniculately branched above : 

 leaf -blades thickish, spatulate to narrowly oblong-spatulate, or varying to lanceolate 

 or linear-lanceolate above, apiculate or acute, narrowed into winged petioles, or the 

 upper ones sessile: peduncles glandular-pilose and tomentose: involucres 7-10 mm. 

 long; inner bracts narrowly linear-lanceolate, somewhat acuminate: pappus fuscous: 

 achenes fusiform, 3.5-4 mm. long. 



On prairies or in woods, Ontario to Minnesota, Illinois, Nebraska and Texas. Summer 

 and fall. 



9. Hieracium Gronovii L. Foliage more or less pubescent with slender hairs 

 especially below. Stems erect, 3-10 dm. tall, paniculately branched above, leafy 

 below, rather naked below the panicle: leaves commonly hirsute; blades spatulate to 

 oblong, oval or obovate, 4-15 cm. long, undulate or repand, the inner narrowed into 

 winged petioles, the upper closely sessile by broad bases: panicle ample or sometimes 

 much reduced: peduncles slender, glandular-pubescent: involucres 5-7 cm. long; 

 inner bracts linear or narrowly linear-lanceolate: achenes fusiform, 3-3.5 mm. long: 

 pappus tawny. 



In sandy soil, Ontario to Massachusetts, Indian Territory, south to Florida and 

 Louisiana. Summer and fall. 



10. Hieracium megacephalon Nash. Foliage purplish and glandular above, 

 hirsute. Stems erect, usually tufted, 2-6 dm. tall, angled, corymbosely branched 

 above: leaves mainly basal; blades oblong-oblanceolate, 4-12 cm. long, acute or 

 apiculate, ciliate, narrowed into short winged petioles, or those on the stem oblong to 

 ovate, sessile by a broad truncate or cordate base : peduncles densely glandular-pilose : 

 involucres 8-10 mm. long, inner bracts linear or slightly narrowed upward: achenes 

 fusiform, 4-4.5 mm. long: pappus pale tawny. 



In dry sandy pine lands, peninsular Florida. Spring. 



11. Hieracium argyraeum Small. Foliage pubescent throughout. Stems 2.5-5 

 dm. tall, usually several together, corymbose and glandular above: leaves mainly 

 basal; blades spatulate to oblong, 2-9 cm. long, quite shaggy with hairs similar to 

 those on the lower part of the stem, those of the upper stem-leaves with broad bases 

 and sessile: peduncles glandular-pubescent: involucres 10-11 mm. high; inner bracts 

 attenuate: pappus silvery white: achenes fusiform, 3-3.5 mm. long. 



In pine lands, peninsular Florida. Spring. 



3. SITILIAS Kaf. 



Biennial or perennial caulescent or scapose usually upright herbs. Leaves some- 

 times all basal; blades irregularly toothed, pinnatifid or sometimes entire. Heads 

 yellow, long-peduncled. Involucres oblong to campanulate, double; inner of several 

 narrow slightly united bracts; outer of several series of much smaller bracts. Bays 

 yellow, truncate and toothed at the apex. Anthers sagittate at the base. Stigmas 

 stout, rather obtuse. Achenes oblong to fusiform, beaked, usually 5-ribbed, pubescent 

 or scabrous. Pappus of numerous brownish hair-like bristles accompanied by a ring 

 of hairs at their bases. [Pyrrhopappus DC.] FALSE DANDELION. 



Caulescent: stems branching: heads several. 



Bracts of the outer involucres fully M to over % as long as the inner heads fully 2.5 cm.long at 

 maturity. 1. 5. Caroliniana. 



Bracts of the outer involucres less than H as long as the inner: heads 2 cm. 



long at maturity or shorter. 2. S. multicaulis. 



bcapose: scapes simple: head solitary. 3. 5. grandi flora. 



1. Sitilias Caroliniana (Walt.) Eaf. Foliage glabrous or nearly so. Stems 

 erect, 1-1.5 dm. tall, usually branched: leaves various; blades more or less deeply 

 pinnatifid, sometimes merely denticulate or nearly entire, these conspicuously elon- 

 gated: involucres 12-26 mm. long; inner bracts narrowly linear; outer bracts nar- 

 rower, fully & to over as long as the inner: ligules yellow: achenes about 5 mm. 

 long, ribbed, somewhat rufous. [Pyrrhopappus Carolinianus (Walt.) DC.] 



In dry soil, Delaware and Missouri, south to Florida and Texas. Spring to fall. 



