46 



HELIANTHEMUM lignosum 

 Hard-wooded Sun- Rose. 



Sect. III. TUBERARIA. Supra fol 18. 



* Perennia, raro fruticosa ; foliis omnibus exstipulatis, caulibus 

 basipilosissupernZglabris, floribm paucis bracteatis subpaniculatis. 



H. lignosum, caule tetragono fruticoso lignoso : cortice rugoso- 

 squamosa; ramis adscendentibus piloso-hispidis, foliis ovato-ob- 

 longis in petiolum desinentibus trinerviis piloso-hispidis scabris 

 canescentibus subtus nervosis supra sulcatis : floralibus sessilibus 

 glabris oblongo-lanceolatis superioribus alternis, pedicellis basi 

 bracteatis paucis subpaniculatis longitudine calycis, petalis obo- 

 vatis distinctis patentibus. 



Helianthemum lignosum. Swt. hort. brit. add. p. 469. . 88. 



Stem shrubby, erect, very hard and ligneous, branch- 

 ing, clothed with a hard brown rugged scaly bark, 

 sometimes cracking longitudinally, obtusely 4-sided, 

 here and there knotted where the branches have died 

 away : branches ascending, soon becoming hard and 

 woody, and appearing rugged from the persistent bases 

 of the decayed leaves, clothed with long bristly hairs. 

 Leaves crowded, opposite, oblongly ovate, acute, atte- 

 nuated at the base down the petiole, strongly 3-nerved 

 underneath, and deeply 3-channelled on the upper 

 side, clothed underneath with a dense white tomentum, 

 and the nerves with long spreading, white hairs ; upper 

 side very rough when rubbed backward, and densely 

 covered with canescent decumbent bristly hairs, and 

 short down intermixed. Flowering branches ascend- 

 ing, densely clothed with long villous hairs on the 

 lower part, the upper part smooth, and slightly glau- 

 cous : leaves on the lower part opposite, sessile, ovately 

 oblong, smooth on the upper side, and hairy under- 

 neath : upper ones alternate, sessile, glaucous, smooth, 



N2 



