CISTUS populifolius. 



Poplar-leaved Rock- Rose. 



Sect. II. LEDONIA. Supra, fol. 1 . 



1. Pedunculis unifloris, out multifloris cymosis, sepalis 5, exter- 

 nis saipius cordatis acuminatis ; capsulis 5-locularibus. 



* Pedunculis bracteatis, basi bracteolis caducis parvulis concavis 

 coriaceis subluteis dccussatis, infra medium 2 oppositis majoribus. 



C. populifolius, foliis petiolatis cordatis acuminatis rugosis laevibus 

 margine undulatis, floribus cymosis, pedunculis bracteatis piloso- 

 pubescentibus, bracteis oblongis acutis carinatis, sepalis acumi- 

 natis nitidis viscosis, petalis patentibus. 



Cistus populifolius. Linn. spec. 736. Cav. ic. 3. p. 8. .215. Willd. 

 sp.pl. 2. p. 11 82. Pers. syn. 2. p. 74. Hort. Kew. ed. 2. v. 3. p. 303. 

 Spreng. syst. 2. p. 586. 



Cistus populifolius. minor. DC. prodr. 1 . p. 266. 



A large strong-growing shrub, with stiff spreading 

 branches : branches clothed with a brown glossy bark, 

 slightly viscous, and scarcely pubescent. Leaves petio- 

 late, cordate, tapering to a point, reticulately veined, 

 rugged and uneven, without pubescence, of a dark green 

 colour, margins undulate, minutely denticulate. Petioles 

 rather long, widened and fringed at the base, clasping 

 the stem, channelled on the upper side, and rounded on 

 the lower, slightly pubescent, and spotted with numerous 

 very small black warts or scales. Flowers large, white, 

 cymose, nodding before expansion, after wards becoming 

 erect. Peduncles bracteate, pubescent. Bractes crossing 

 each other, oblong, acute, keeled, concave, fringed, of 

 a reddish purple ; lower ones smallest. Pedicles short, 

 thinly pubescent, rather viscous. Calyx of 5 sepals, the 

 2 outer ones largest, cordate, acute, smooth and glossy, 

 viscous, slightly pubescent, sides a little reflexed, inner 

 ones smaller, more taper-pointed and membranaceous. 

 Petals 5, white, with a light yellow spot at the base, 



