1280 



PENTSTEMON* pruindsum. 

 Blue-leaved Pentstemon. 



DIDYNAMIA ANGIOSPERMIA. 



Nat. ord. ScropiiularinEjE. 

 PENTSTEMON. — Supra, vol. 13. fol. 1121. 



P. pruinosum ; foliis csesiis, radicalibus petiolatis integris dentatisve, caulinis 

 dentatis sessilibus, bracteis superioribus integris, floribus verticillatis, 

 calycibus bracteisque villosis, coroUis glabris calycibus duplo longioribus; 

 linibi laciniis rotundatis integris. 



P. pruinosum. Douglas in herb. Hort. Soc. 



Perennis ^- l^-pedalis, undique pruind ccesid irrorata. Folia radicalia 



ccespitosa, pubescentia, rigida, nunc, prcesertim in cultis, integerrima, nunc 



dentata. Verticillastra 7-8-Jlora. Floras cyanei. 



This rivals the fine P. speciosum in the brilliancy of its 

 colouring, and exceeds it in the neatness of its appearance. 

 It was found by Mr. Douglas near the Priest's rapid of the 

 Columbia, and by him sent to the Horticultural Society, in 

 whose Garden our drawing was made in July last. 



It is perfectly hardy, and perennial ; but, like many of 

 the newly-introduced species of this genus, is apt to exhaust 

 itself so much in flowering as to become little better than 

 a biennial. This may, however, be prevented by pinching 

 a part of the flowering stems of each plant, upon their first 

 appearance, — a practice which may be advantageously 

 adopted with regard to all plants having similar habits. 



It should be cultivated in a shady place, in some light 

 soil, in which it will flower beautifully during all June, 

 July, and August, ripening seeds in tolerable abundance. 



J. L. 



* See fol. 1245. 



