SYNGENESIA SUPERFLUA 



407 



HELIOPSIS. Persooii. 



Involucrum imbrica 



hwolucrmn imbri 



turn, squamis ovatis, cate, the scales ovate. 



subequalibus. Corol 



lulce 



radii 



lineares. 



Papjms nullus. 

 na tetrasona. 



tacidum conicum. 



Sem i" 

 Recep- 



nearly equal. Florets 



of the ray linear. Pap'- 



pus 0. Seeds 4-an- 



gled. Receptacle co- 

 nic. 



1. L^vis. 



Persoon, 2. p. 473. Pursh, 2. p. 563. Nutt. 2. p. 172. 

 Buphthalmum Helianthoides. Sp. pi. 3. p. 2236. Walt. p. 212. Midi, 



* 



2. p. 130. 



Root perenniaJ. Stem two to four feet high, glabrous, dichotomously 

 branching. Leaves opposite, ovate-lanceolate, triplinerved, coarsely ser- 

 rate, nearly smooth, and glabrous. Flowers solitary, terminal, and in the 

 divisions of the stem, on long peduncles. Involucrum many leaved, imbri- 

 cate, leaves oblong, rather obtuse. Florets of the ray oblong, yellow, about 

 ten? of the disk numerous. Seeds four-augled, naked. Receptacle convex, 

 scaly, the scales longer than the seeds. 



Grows in dry sandy soils— not common in the low country of Carolina, 

 Flowers May — June. 



TETRAGONOTHECA. L'Heritier. 



-^ 



Involucrum 



Phyll 



mono 



um 



^ 



4-gonum 



9 



4- 



partitura, latissimum. 



Re- 



Pappus nullus. 



eeptaculum paleaeeum. rehaffy. 



Involucrum one-lea- 



- T 



ved, 4-angled, 4-part- 

 ed, very broad. Pap-- 

 pus none. Receptacle 



1. Helianthoides. 



Willd. Sp pi. 3. p. 21 16. Pursh, 2. p. 563. Nutt. 2. p. 

 i olyrania Tetragonotbeca. Walt. p. 2 1 6. Mich. 2. p. 1 47- 



Root perennial. Stem herbaceous, erect, two to three feet high, branch- 

 fflg, somewhat hispid, and with the wiiole plant scabrous. Leaves opposite, 



