468 



SYNGENESIA FRUSTRANEA. 



ser- 



lanceolato - oblongis, [ ceolate-oblong, 

 serratis, hispidis; disco rate, hispid; disk near- 



subliemisphaerico; pa 



leis pappi 

 aristatis. 



subulatis 



? 



ly hemispherical; chaff 

 of the pappus subulate, 



awned. 



^ ** 



Pursh, 2. p. 574. Nutt. 2. p. 178. 



Flowers small, deep yellow. Pursh. o- t u 



Described by Pursh from specimens in the Herbarium of Sir Joseph 



Banks. 



■? 



Collected in Carolina by Bartrara. . Can it really belong to this genus: 



CENTAUREA. Gen. Pl. 1331. 



iTWolucriim varium 



Involucrum various 



Radii coroilulse iiifun- Florets of the ray fun- 



dibuliformes, irregula 



Pappus pilosus 



res. 



Receptaculum setosum 



I 



nel-shaped, - irregular 

 Pappus hairy. Recep 

 tacle bristly. 



1. Benedict A. 



C. involucri squamis 

 duplicato-spinosis, Ian 



atis, 

 semi 



bracteatis 



? 



foliis 



- decurrentib 



denticulato spinosis. 



> 



r 



Scales of the involu- 



crum 

 with 



doubly 

 spines, 



armed 

 woollyj 



with bracteal leaves at 

 base; leaves somewhat 

 decurrent, toothed and 

 spiny. 



Sp. pi. 3. p. 2315. NuH. 2. p. 183. 



Annual? Stem prostrate, six to^twelve inches long, sparingly branch^i^ 

 very villous or woolly, heaves sessile, pinnati6d, rugose, villous, segmei^^ 

 acute, the lower sometimes runcinate. Flowers solitary, terminal, surroui^^ 

 ed by the terminal leaves. Involucrum ovate, imbricate, the scales ^^j'^^^ 

 late, glabrous, terminating in a compound pectinate spine. PJ"^^^.^J ^^^ 

 bular, those of the ray slender, three-cleft, those of the disk *»^^"'^;, ' ^ 



incision very deep. Styles of the fertile florets longer than the corolla, 



