412 



SYNGENESIA SUPERFLUA 



WiUd 

 p. 170. 



Mich. 2. p. 134. Pursh, 2. p. 565. Nutt. 2 



V. Occidentalis. Walt. p. 213. 

 Siegesbeckia Occidentalis. Lin. Gron. 



Root creeping, perennial. 



Stem herbaceous, erect, four to six feet high^ 



Leaves large ovate, 



pubescent, four-winged, branches opposite, brachiate. 

 acuminate, acutely and irregulaily toothed, triplinerved, pubescent, some- 

 what scabrous, abruptly attenuated at base into a petiole one to two inches 

 long. Flowers in large somewhat fastigiate corymbs, the small branches or 

 peduncles alternate. Involucrum eight to ten leaved, loosely imbricate, 

 the leaves oblonsj, obtuse, pubescent, the interior resembling scales. Florets 

 of the ray one "to three, yellow, lanceolate, three-toothed at the summit, 

 nearly an inch long; of the disk twenty to twenty-four, tubular, yeHow^fij^^ 

 cleft at the summit. 



hairy ainns. 



Seeds obovate, compressed, hispid^ crowned with two 

 Receptacle flat, chaffy; scales lanceolate, acuminate, pubes- 



cent, as long as the florets of the disk. 

 Grows in dry sandy soils. 

 Flowers June — August. 



SYNGENESIA FRUSTRANEA. 



ACTINOx\IERIS. Nuttall. 



. V 



Involucrum 



poly- 



Involucrum many 



phyllum, squamis sub- I leaved, scales 



nearly 



lequalibiis (biseriatis?) equal (in 2 series?) Flo- 



Radii corollulce 4 



8 



2 



Receptaculum 



paleaceum squamis se- 

 uiina amplexicaulibus. 



rets of the ray 4 



8 



(12.) 



Receptacle chaf- 



Semina 



com 



pr 



essa 



9 



margin ata, aristis dua- 

 bus persistentibus. 



1. Helianthoides? 



A. foliis lanceolatis 



fy, the scales embrac 

 ing the seed. Seeds 



compressed, margined. 



bearing 

 awns. 



2 



persistent 



Nutt. 



Leaves lanceolate, 



acutis, serratis, subtus acute, serrate 



i 



villous 



villosis, scabris; caule } underneath, scabrous; 



J 



panicula pauci- stem winge 



alato 



flora, radiis elongatis. 



pan 



icie 



few flowered; florets of 

 thy ray long. 



% 



