140 DICOTYLEDONOUS. 



Genus IX. CICHORIUM. 



Involucre surrounded with leafy scales. Florets perfect. 

 Receptacle naked, or somewhat chaffy. Pappus plumose, 

 sessile, unequal. 



1. C. Intybus. Stem with numerous rough branches, ieare^runcinate. 

 Flowers axillary, sessile in pairs, large. Succory or Eudive. 



Blue. % July— Sept. Introduced. 2-3 ft. 



Sub-Order If. CARDUACEiE. {Thistle Tribe. 



Florets of the capitulum tubular. Receptacle chaffy. 

 Stigma articulated. Leaves alternate, often spiny. 



Genus X. CNICUS. (Spu Carduus) 



Involucre ventricose, imbricate, with spinose scales. Flo- 

 rets perfect. Receptacle hairy. Pappus plumose, or pilose. 



I.e. Altissimus, Stem erect, branching. Leaves sessile, oblong-lance- 

 olate, scabious, tomentose beneath, dentate, ciliate, radicle ones pinnatifid. 

 Flowers terminal. Involucre cylindrical ovate; scales ovate, spinous, ap- 

 pressed, pale. A'ficeptocZe villous. 



Purple. % July— Sept. Upper districts Car. & Ga. 2-3 feet 



2. G. MuTicus. Stem erect, slender, branching. Leaves pinnatifid, woolly, 

 tomentose beneath; segments with spines, somewhat bracteolate, occasion- 

 ally 3-lobed, pale, acute. JBranches naked, 1-flowered. l7ii;oZucre globose; 

 scales without spines, lanuginous. 



Purple. 11- July— Sept. Mountains. 2-6 ft. 



3. C. Repandtjs. Stem erect, sometimes branching, but usually simple, 

 woolly. Leaves oblong, narrow, amplexicaule, repand, sinuate, fringed with 

 spines, woolly beneath. Branches 1 flowered, leafy. Involucre with ovate- 

 lanceolate scales, erect, spinous, slightly woolly. Receptacle bristly. Papptis 

 plumose. 



Purple. % June— July. 2-3 ft. 



4. C. ViRGiNiANUs. Stem simple, angled, tomentose towards the summit. 

 Leaves sessile, narrow lanceolate, with spiny teeth, acute, slightly hairy on 

 the upper surface, tomentose beneath. Flowers solitary, terminal. Involucre 

 ventricose ; scales appressed, caronate, ovate. Seeds slightly angled, oblong. 

 Pappus plumose. Receptacle bristly. 



Purple. % June— Sept. Pine barrens. Common. 2-3 ft. 



5. C Glaber. Stem erect, furrowed, sprinkled with hairs, branching. 

 Leaves sessile, pinnatifid, very long, hairy along the veins, spiny along the 

 margins and angles; segments 3-5-lobed. PZoiwers in panicles. Peduncles 

 slender, slightly hairy; scales of the involucre, viscid, with a short spine. 

 Seeds glabrous. Pappus plumose. Receptacle bristly. 



Purple. % May — Aug. In cultivated lands. 4-6 ft. 



6. C. Discolor. Stem erect, hairy. Zeares sessile pinnatifid; segments 

 2-lobed, spinous, hairy on the upper surface, tomentose beneath. Flowers 

 solitary, terminal, on leafy branches; scales of the involucre ovate, termina- 

 ted by a long spine. Seed smooth. Pappus plumose. 



Purple. % June — July. Upper districts Car. and Ga. 



7. C. HoRRiDULUS. SZem erect, simple, woolly. Zeares sessile, pinnatifid i 

 crowded near the base; segments lobed, dentate, spinous, hairy on the upper 

 surface, woolly beneath. Flowers solitary, axillary and terminal, on short pe- 



