TANDRIA 



309 



ftom the southern plant, and Mr. Nuttall has latelj informed me that 

 he has found in Tennessee a species agreeing more minutely with 

 Michaux's argyrocoma than the one above described. 



• 



ACHYRANTHES. 



Gen. PL. 404. 



+ 



Calyx duplex, mem-! Cate double, membr 



-anaceus, persistens 



J 



pel 



ex- 



exterior S-phyllus, inte- terior 3 leaved, interior 



nor S-phyllus, ina3qualis. 



Stamina , nectario insi- 



dentia, lacinia interposita. 

 Semen l, 



1. Repens. 

 A. caulibiis 

 hirsutis : foliis 



ed, unequal 



Sta- 

 mens sitting on the nec- 



tween 



ment be 

 Seed 1. 



o 



p» 



Stem prostrate, hairy ; 

 leaves opposite, lanceo- 



pitulis sessilibus, ovatis, 

 alternati maxilla 



ibus. E 



petiolate; heads 

 Dvate, alternately 



7 



Gomplircna poljgonoides, Linn. 



Illecebruni achyrantha, Walt. p. 103, 



lllecebrura polygonoidcs, Willd. 8p. pi. I. p. 1208. 



Jlich. 2. p. 54. Pursh, 2. p. 445. 



Achjranthes poljgonoides, La Marck, Ency< Meth. under the 



PI 



Leav 



wDrd Cadelar- 



.fi 



one leaf generally larger tlian the other. 'Iht flowers bj pressure in 

 the heads acquire a 3 angled form. Exterior cahjx 3 leaved, leaves 

 very acute, somewhat rigid, equal ; interior cahjx 5 leaved, the 3 ex- 

 terior ovate, lanceolate, very acute, rigid, hairy near the base, equal 

 longer than the exterior calyx; the 2 interior shorter, %-ery hairy even 

 at the summit, hairs long, glandular, capitate. JS%ctary surrounding- 

 the base of the germ, persistent, bearing the stamens ; the se-rn.ents 

 betueen the stamens subulate, simple, acute, as long as the fila^nents. 

 Filaments short. Jinthers incumbent, oval. Germ superior neai-Iy 

 globose, %/e very short. 'SN^mv obtuse, slightly glandular. Cap- 

 sule I celled, not opening. Seed 1, round, compjiessed. 



Tliis humble and common plant appears to have been negligently 

 examined; it accord-, nearly Avith the genus Achyranthes as under- 

 stood by LaMarek, excepting that by its interior calvx (or coolla) it 



i* nearly allied to Gomphrena, and that tb.e intermed'iate sesments of 



* 



