/ 



286 



SYNGENESIA ^QUALIS 



1. Oligophylla. 



Mich. 



V. caiile simplici, su- I Stem simple, branch- 



perne ramoso; foliis ra- I ing towards tlie summit; 

 dicalibus ovalibus, cauli- root leaves oval, stem 

 nis lanceolatis, omnibus leaves lanceolate, all 

 dentatis; corymbo pani- toothed; corymb panicu- 

 culato; involucri squamis late; scales of the invo- 

 lanceolatis, acuminatis. I lucrum lanceolate, acu- 



I minate. 



Mich. 2. p. 94. Pursh; 2. p. 511. Nutt. 2. p. 134. 

 Chrysocoma Acaulis. Walt. p. 196. 



RoQt perennial, stoloniferous. Stem about two feet IiJgli, furrowed, a 

 little pubescent and scabrous. Root leaves large, oval, acute, coarsely but 

 acutely toothed ; stem leaves a little crowded at the base of the stem, scatter- 

 ed towards the summit, finely toothed, sometimes serrate ; all scabrous on 

 the upper surface, pubescent underneath, particularly along the veins. Pe- 

 tioles of the radical leaves about two inches long ; of the stem leaves only 

 an attenuated base. Flowers scattered in an irregular panicled corymb. 

 Involucrum imhncate ; scales ovate-lanceolate, pubescent, fringed, acuiri- 

 nate, the lower ones filiform at their summits. Corolla purple, deeply five- 

 cleft, much longer than the involucrum. Seeds oblong, striate, hairy, crown- 

 ed with a double pappus; the exterior composed of many short scales; the 

 interior hairy, somewhat scabrous. 



Grows in damp pine barrens, and along the margins of swamps. 



Flowers June — ^July. 



2. SCABERRIMA? 



Nutt. 



V. caule simplici; fo- 

 liis lineari lanceolatis, 

 denticulatis, scabris, pi- 

 losis; corymbo subumbel- 

 lato; involucri squamis 

 longe mucronatis. 



Nutt. 2. p. 134. 



Stem simple; leaves 

 linear lanceolate, denti- 

 culate, scabrous, hairy; 

 corymb somewhat um- 

 beliiform; scales of the 

 involucrum conspicuous- 

 ly mucronate. 



Root perennial. Stem ab(jut two feet iii^fh, slender, very hairy near the 

 base, smooth and nearly naked towards the sun)mit. Leaves somewna 

 crowded on the lower part of the stem, sessile, two to three inches long; 



hairy and scabrous on both surfaces, with the. margins revolute and sparing- 



