7i8 REPORT OF NEW JERSEY STATE MUSEUM. 



M. Canby (1831-1904), the noted botanist of Delaware, and one 

 of the most active students of the New Jersey Pine Barren flora.* 

 Fl. — Late July to late Septemlber. 



Pine Barrens.— Ldkthmsi., Bamber, Jones' Mill (S), Speedwell (S), Cedar 

 Brook, Hammonton, Atsion, Parkdale, Quaker Bridge, Bear Swamp (S), 

 Cedar Lake, Batsto, Opp. Crowleytown, Egg Harbor City, Belleplain, Wood- 

 bine. 



Family CICHORIACEi^. Chicory, Dfandelions, etc. 



Key to the Species. 



a. Flower heads drooping, with a long, cylindrical involucre. 

 h. Heads 5-7 flowered, pappus light straw color. 



Nabalus attissimus, p. 723 

 bb. Heads 8-16 flowered. 



c. Pappus dark cinnamon-brown. N. albus, p. 724 



cc. Pappus straw color or light brown. 

 d. Inflorescence paniculate. 



e. Bracts shorter than the pappus. N. serpentarius, p. 724 



ee. Bracts equal to the pappus. N. trifoUolatus, p. 723 



dd. Inflorescence thyrsoid, often simple, and unilateral. 



A'', virgatus, p. 724 

 aa. Flower heads not drooping. 

 b. Flowers blue or white. 



c. Flower heads 25-37 i^m. broad, bright blue or white. 



[Cichorium intybusY 

 cc. Flower heads 4-10 mm. broad. 



d. Pappus white, flowers bright blue. 



e. Leaves oblong to ovate, dentate. Lactuca vilhsa, p. 721 



ee. Leaves pinnatifid. L. Horidana, p. 721 



dd. Pappus brown, flowers pale blue or bluish white. 



L. spicata, p. 721 

 bb. Flowers yellow or orange. 



c. Leaves all basal, scapes with a single head of flowers. 



d. Heads 15-50 mm. broad, flowers yellow. [T. taraxacum]* 



dd. Heads 6-12 mm. broad, orange. 



Adopogon carolinianutn, p. 719 

 cc. Cauline leaves present. 



d. Cauline leaves 1-5, a rosette of basal leaves. 

 e. Flowers orange, plant glabrous and glaucous. 



Ad&pogon virginicum, p. 719 

 ee. Flowers yellow. 



* cf. Torreya IV. 52. 



* Chicory. Introduced along roadsides, etc. 



* Common Dandelion, an abundant weed. 



