1,'74 COMl'OSIT.K. (('((Ml'MSlTK 1 AMILV.) 



• Arlii'iiia iibni]itli/ contracted into ajilifnnn hiak. 



1. L. graminifolia, Miclix. (ilubrous, or nearly BO, stem simple, or 

 paniculate ;ilii>M-, 2^-:")° liijiii ; leaxcs linear, acute, 4'- 12' loiij;, the lower 

 mostly ]iinnatitiil in the middle, the earliest otiovate or uhlong, entire ; Howen* 

 mostly lilue ; achenia ellijitical, longer than the beak. — Dry sandy soil iu the 

 lower districts. .May - August. 



2. L. Canadensis, L. (Wild Lettlck.) Glabrous; stem 3° -6° high, 

 paniculate above , leaves piunatifid from the base, acute or acuminate, 6' -9' 

 long, the upper toothed or entire; Howers yellow; achenia oval-obl<»ng, rather 

 longer than the beak. — Margins of fields, and woods. July - .Sej)t. 



3. L. integrifolia, Higel. Stem 3° -5° high, paniculate above, gla- 

 brous; leaves oliloni^-lanceolate, acuminate, clasping, entire, or the lowest 

 denticulate, rarely lobed, 3'- 6' long ; Howers dull yellow ; achenia oval, longer 

 than the beak. — With the last, iu the upper districts. July- August. 



4. L. hirsuta, Muhl. Stem hirsute near the base, 3° -4° high ; leaves 

 deeply jiinnatitid, more or less hirsute, 3'- 4' lojig; Howers purplish or dull 

 red ; achenia ol)longoval, about the length of the beak. — Upper districts of 

 North Carolina (Curtis). 



♦ # Achenia tapering into a short stout beak. — Mulgeuium. 



H- Pappus white. 



5. L. acuminata, Gray. Smooth; stem panicled above; leaves ovate 

 or ovate-lanceolate, acuminate, toothed, on winged petioles, the lowest some- 

 times sinuate-lobed ; heads racemed, on spreading peduncles. — Margins of 

 fields, etc. Sept. (2) — Stem 3° -6° high. Leaves 3' - 6' long, often hairy 

 beneath. Flowers blue. 



6. L, Floridana, Ga^rt. Smooth ; stem panicled above ; leaves all pin- 

 natiful anil tontlieil, with tiie terminal lobe larger and 3-angled, or the upper- 

 most lanceolate, sessile or clasping ; heads racemose-pauided ; flowers blue. 



— Rich soil, Florida to North Carolina. August - Sept. — Stem 3° - 6*' 

 high. 



■1- •*- Pappus tawny. 



7. L. leucophaea, Gray. Smoothish ; stem panicled above ; leaves 

 numerous, irregularly piunatifid, with coarsely toothed lobes ; the te'-minal 

 lobe .3-angled, or in the upper leaves often linear and entire; racemes panicled. 



— Mountains of North Carolina. Sept. (2) — Stem 3°- 12° high. Leaves 

 6'- 12' long. Flowers pale blue. 



97. SONCHUS, L. 



Heads many-flowered. Scales of the involucre imbricated. Receptacle 

 naked. Achenia compressed, ribbed, not beaked nor narrowed at the apex. 

 Pappus of copious soft white hairs. —Annuals. Leaves entire or pinnatifid. 

 Heads somewhat umbelled. Flowers vellow. 



1. S. Oleraceus, L. Smooth; stem branching; leaves pinnatifid, with 

 spiny-toothed lo})es, clasping ; the lowest petioled ; achenia transversely rough- 

 ened. — Waste places. Introduced. June - August. — Stem 1 ° - 2° high. 



