21 



HELIANTHEMUM canadense. 



Canada Sun-Rose. 



Sect. If. LECIIEOIDES. Supra, fol. 11. 



* Pedunculis ramealibus uniflorls ebracteatis. 



H. canadense, caule erecto apice ramoso : ramis hirsutis, foliis liir- 

 sutis inferioribus oppositis oblongis obtusis planis : superioribus 

 alternis oblongo-lanceolatis acutis subtus subtomentoso-eanis mar- 

 gine vix revolutis, peclunculis hirsutis unifloris solitariis, sepalU 

 internis ovatis acuminatis, petalis obcordatis valde imbricati.s, 

 staminibus 20-22 decumbentibus. 



Helianthemum canadense. Mich.Jt.amer.l. p. 307. Purshfl. amer. 

 sept. v. 2. p. 363. DC.prodr. 1. p. 269. Pers.syn.Z.p.H. Spreny. 

 syst. veg. 2. p. 588 ? 



Cistus canadensis. Willden. sp.pl. 2. p. 1199. HorL Kew. ed.%. 

 r.3. p. 310. 



Perennial, herbaceous. Stems several from the same 

 root, erect or ascending*, branching on the upper part, 

 of a purplish brown colour, clothed with soft woolly 

 hairs. Leaves hairy ; lower ones opposite, oblong or 

 ovate, obtuse, flat : upper ones alternate, narrower, ob- 

 longly lanceolate, acute, underneath thinly clothed with 

 a white tomenturn, margins slightly re volute, rough and 

 uneven, but scarcely crenuiate, fringed with very short 

 hairs. Petioles very short, hairy. Peduncles one flow- 

 ered, solitary, erect, thickly covered with unequal spread- 

 ing hairs, of a brownish purple colour. Calyx of 5 se- 

 pals, 2 outer ones very small, subulate, very hairy and 

 fringed : inner ones narrowly ovate, taper-pointed, con- 

 cave, very hairy and ciliate, the points tipped with red. 

 Petals 5, obcordate, scarcely crumpled, margins rather 

 uneven, very much imbricate, of a bright yellow colour. 

 Stamens from 20 to 22, spreading flat : filaments un- 

 equal in length, long and slender, bright yellow : pollen 

 dark yellow. Germen smooth and glossy. Style very 



