Tab. 8660. 

 PENTSTEMON rupicola. 



North America. 



Scrophulariaceae. Tribe Cheloneae. 

 Pemtstemon, Mitch. ; Benth, et Hook. f. Gen. Plant, vol. ii. p. 940. 



Pentstemon rupicola, Howell, Ft, N.W. Amer. p. 510, 1903; affinis P. 

 Newberryi, A. Gray, sed sepalisoblongo-ellipticis subacutis baud acuminatis 

 corolla ventricosa majore antheris baud vel vix exsertis apte distinguenda. 



Herba basi ramosa caulibus ascendentibus junioribus dense puberulis superne 

 plus minusve glandulosis. Folia ovata, apice acuta, basi cuneata, 

 saepissime circiter 7 mm. longa et 5"5 mm. lata, margine serrata, crassius- 

 cula costa et nervis indistinctis plus minusve ciliolatis. Floret ad ramorum 

 apicem aggregati pedicellis 6 mm. longis glanduloso-pubescentibus ; 

 bracteae foliis similes nisi angustiores ; bracteolae lanceolatae, acutae, 

 2 mm. longae, 1 mm. latae. Sepala oblongo-elliptica, acuta, 7 mm. longa, 

 3*5 mm. lata, utrinque leviter glandulosa. Corolla conspicue bilabiata, 

 ventricosa, roseo-coccinea ; tubus 2-5 cm. longus, basi 4 mm. diametro, 

 7 mm. supra basem constrictus, 3 mm. diametro, deinde anipliatus fauce 

 1 cm. diametro ; labium anticum 1-2 cm. longum, 1-5 cm. latum, trilobum 

 lobis lateralibus 5 mm. longis 4*5 mm. latis, lobo medio minore; labium 

 po3ticum 1-2 cm. longum, 1*1 cm. latum, bilobum lobis 5 mm. longis 

 4-5 mm. latis. Stamina 4 ; filamenta 2 cm. longa ; antherae liberae, dense 

 comosae. Staminodium 1-5 cm. longum, inferne glabrum, superne barba- 

 tum. Ovarium cylindrico-ovoideum, 4 mm. altum, 2 mm. diametro, gla- 

 brum ; stylus 2-7 cm. longus, glaber.— P. Newberryi, A. Grav, var. ri<],icola, 

 Piper in Bull. Torr. Bot. Club, vol. xxvii. p. 397, 1900; KrautterinContrib. 

 Bot. Lab. Univ. Pennsylv. vol. hi. no. 2, p. 102, 1908.— W. B. Turkill. 



This charming Pentstemon has recently found its way 

 into cultivation in England, and we are indebted to 

 Mr. C. Elliott, Six Hills Nursery, Stevenage, for the 

 example figured. The plant was obtained by Mr. Elliott 

 in 1910, and has been grown as P. David 'sonii, Greene. 

 It is, however, very distinct from that Californian plant, 

 being much more closely allied to P. Newberryi, A. Gray, 

 a more northern species which has itself been by some 

 authors treated as a form of P. Memiesii, Hook. The 

 original material of P. rupicola came from dry rocky cliffs 

 on Mt. Rainier, Washington, at 7500 feet above sea-level ; 

 with this Mr. Piper, who looked on the species as only 

 a variety of P. Newberryi, associated material collected 

 by Mr. Allen on the Goat Mountains, also in Washington. 

 Allen s plant agrees with that now figured in every respect, 

 May, 1916. L 



