Syngenesia ^qualis. 317 



Athanasia Gramnifolia ? Walt, p. 200. 



Root perennial. Stem about two feet highj angular^ glabrous, branching 

 and a little pubescent at the summit of the branches. Leaves long and ve- 

 ry narrow, obscurely three-nerved, glabrous. Flowers in solitary terminal 

 heads. Invohicrum nxHuy leaved, containing many flowers; leaves subu- 

 latCj pubescent, acute. Corolla longer than the involucrum, pale purple, 

 externally villous. Seeds angular, villous along the angles. Pappus com- 

 posed of five ovate, mucronate, lacerate scales, in which the midrib though 

 transparent, is distinctly visible. Receptacle paleaceous, pale« linear. 



Van a. Cyananthera. 5?e?M simple, angular, furrowed, very pubescent 

 near the summit. Leaves linear-lanceolate, conspicuously three-nerved. 

 F/o?/7er5 in a terminal head. Scales of the in volucrum lanceolate, slightly 

 acuminate, pubescent. Corolla pale purple, externally villous. Anthers as 

 long as the corolla, bright sky blue. Seeds hairy. Pappus acuminate, mu- 

 cronate, lacerate. Palece of the receptacle linear. 



Grows in the pine barrens in the middle country of Carolina and Geor- 

 gia. The variety a, perhaps a distinct specieSj was collected by Dr. Bald- 

 win, near St. Mary^s, Georgia, 



Flowers, 



I 



SYNGENESIA SUPERFLUA. 



^ Florihus discoide'- 1 * Florets discoid, 

 is, radiis nuilis, | those of the r«j/ ohso- 



lete. 



ARTEMISIA. Gen. Pl. 



Involucrum imbrica- 

 lum, squamis rotimda- 

 tis, conniventibus. Co- 

 rollulce radii nullae. 

 Pappus nullus. Re- 

 <^eptaculum subvillosiim 

 vel nudiusculiim. 



Involucrum imbri 



\ - 



cate, scales round, con- 

 nivent. Florets of the 

 ray 0, Pappus 0. Re- 

 ceptacle uaked, or 



slightly villous. 



