Cacalia. COMPOSITiE. 401 



1. Cacalia suaveolens, Linn. Sweet-scented Indian Plantain. 



Stem striate and angled ; leaves triangular-lanceolate, hastate, acute, unequally serrate- 

 toothed ; the cauline on winged petioles, green on both sides ; heads many-flowered ; scales 

 of the involucre about 12. — Linn. sp. 2. p. 835 ; Michx. fl. 2. p. 96 ; Pursh, Jl. 2. p. 518 ; 

 " Schk. handh. t. 236 ;" Beck, lot. j9, 199 ; DC. prodr. 5. p. 327 ; Torr. ^ Gr. Jl. N. Am. 

 2. p. 434. Senecio suaveolens, Ell. sk. 2. p. 328. 



Perennial ? Stem 3-4 feet high, smooth. Leaves 3-5 inches long and 1-2 incheg 

 wide, smooth, rather thin ; the radical ones on long petioles, with conspicuous hastate lobes. 

 Heads 25 - 30-flowered. Involucre with several setaceous spreading bracts at the base. 

 Flowers yellowish- white. Receptacle flat, naked. 



Fertile damp soils, along streams, etc. Avon, Livingston county {Dr. B. D. Greene). 

 August — October. This species has the habit of Erechtites hieracifolius. When dry, it 

 exhales the odor of Medicago ccerulea. 



2. Cacalia atriplicifolia, Linn. (Plate LIX.) Indian Plantain. 



Stem terete, glaucous ; leaves all petioled, whitish and glaucous underneath, palmately 

 veined, angularly lobed or toothed ; radical and lower cauline deltoid-cordate ; the upper 

 rhomboid, cuneate at the base ; involucre 5-leaved, 5-flowered. — Linn. sp. 2. p. 835 ; Michx. 

 fl. 2. p. S6 ; Pursh, fl. 2. p. 518^ " Schk. handb. t. 236 ;" Nutt. gen. 2. p. 137; Ell. sk. 2. 

 p. 310 ; Beck, hot. p. 199 ; Darlingt. jl. Cest. p. 499 ; DC. prodr. 6. p. 329 ; Torr. <^ Gr. 

 fl. N. Am. 2. p. 435. Senecio atriplicifolius. Hook. fl. Bor.-Am. 2. p. 332. 



Stem erect, 3-6 feet high, mostly simple. Lower leaves 2-4 inches long and of about 

 the same breadth, strongly nerved, rather thick, more or less distinctly cordate ; the petioles 

 2-6 inches long. Heads numerous, in a compound terminal corymb. Involucre ventricose, 

 ■with several minute bracteoles at the base ; the scales lanceolate-oblong, rather obtuse. 

 Flowers greenish-white. Achenia oblong, ribbed, crowned with a whitish ring, on which the 

 copious pappus is inserted. Receptacle commonly with a central somewhat chaffy column, 

 consisting probably of united paleae ; this, however, is sometimes almost wanting. 



Moist soils, on the borders of woods. Near Geneseo {Rev. Mr. Bennett). Near Rochester? 

 July - September. The leaves are sometimes used as an apphcation to wounds. 



40. SENECIO. Linn. ; DC. prodr. 6. p. 340. GROUNDSEL. 



[ So named from tlie Latin, senex, an old man. Sec Erioeron.] 



Heads many-flowered, usually radiate with pistillate rays ; sometimes discoid, with all the 

 flowers tubular and perfect. Scales of the cylindrical involucre in a single series, often 

 calyculate. Receptacle naked or alveolate. Achenia neither rostrate nor winged. Pappus 

 [Flora.] 51 



