416 COMPOSITE. Nabalus. 



2. Nabalus altissimus, Hook. Tall Nahalus. 

 Sinoolliish ; stem virgate ; leaves membranaceous, all peiioled, undivided, or the lower 



ones palmately 3 - 5-cleft or parted , llie lobes or leaves acuminate, repandly toothed or 

 denticulate ; heads in small axillary or terminal clusters, forming an elongated virgate panicle ; 

 involucre of five scales, 5 — 6-flowered ; pappus dirty white or straw-color. — Hook. fi. Bor.- 

 Am. 1. p. 294 ; DC. prodr. 7. p. 241 (excl. syn.) ; Torr. ^ Gr. fl. N. Am. 2. p. 481. 

 Prenanihes allissima, Linn. ; Pursh, fl. 2. p. 498 ; Ell. sk. 2. p. 256 ; Torr. compend. 

 p. 277. Harpalyce altissima, Beck, hot. p. 167. 



Tar. cordatus : leaves mostly cordate on slender petioles. Torr. <^ Gr. I. c. N. cordatus, 

 Hook. I. c. Prenanthes cordata, Willd. hort. Berol. t. 25 ; Pursh, I. c. ; Ell. I. c. 



var. deltoideus : leaves deltoid, strongly repand-toothed , the upper often cordate ; the 

 radical and lowest cauline triangular-hastate, or sometimes 3-parted. Torr. <^ Gr. I. c. N. 

 deltoideus and cordatus, DC. I. c. Prenanthes deltoidea, Ell. I. c. 



Stem slender, 3-5 feet high, mostly simple except the somewhat paniculate summit. 

 Leaves 3-8 inches long and 3-6 inches wide at the broadest part, on long slender petioles, 

 extremely variable in form, often quite smooth, or only a little pubescent on the veins and 

 midrib. Heads nodding ; the clusters arranged in a somewhat leafy panicle a foot or more 

 in length. Corolla yellowish or greenish white. 



Woods, often in shady moist places ; rather rare, August - September. Distinguished 

 from the preceding and following species by the acuminate lobes or undivided leaves, and 

 few-flowered involucres. 



3. Nabalus Fraseri, DC. Gall of the Earth. 



Smooth or slightly puberulent ; stem corymbosely paniculate at the summit ; leaves mostly 

 deltoid, variously 3 - 7-lobed, and contracted into winged or margined petioles , the upper 

 nearly sessile and often undivided ; racemes paniculate ; involucre smooth or slightly hairy, 

 of about eight scales, 8 - 12-flowered ; pappus straw-color. — Torr. ^ Gr. fl. N. Am. 2. 

 p. 481. N. Fraseri, trilobatus and serpentarius, /3., DC. prodr. 7. p. 241. P. rubicunda, 

 Pursh, fl. 2, p. 499, excl. syn. P. alba. Ell. sk. 2. p. 259. 



var. integrifolius : leaves thickish, lanceolate-oblong, acute or obtuse, denticulate or sharply 

 and irregularly toothed ; involucre often somewhat hairy. Ton-. ^ GV. I. c N. integrifolius, 

 Cass. ; DC. I. c. 



Stem 2-4 feet high, branched. Leaves very variable, in open situations more divided 

 than in the shade ; the lobes short and sinuate-denticulate. Involucre often purplish, usually 

 quite smooth. Flowers cream-color, sometimes with a tinge of purple. Achenia finely striate. 



Dry sterile or sandy soil ; rather common. The var. integiifolius, on Long Island near 

 New- York. August - October. Very near N. albus, and some of its forms only to be dis- 

 tinguished from that species by its light colored pappus. 



