of a Hybrid Digitalis. 



261 



Purpurea. 



Hybrida (purpureo-lutea.) 



more hairy. 



purple. 



spots more nume- 

 rou s, deep purple, 

 and rings paler. 



less hairy. 



obscurely 4lobed, 

 the upper emar- 

 ginate. 



half the length, 

 convergent. 



deeper orange-yel- 

 low, with nume- 

 rous spots often 

 confluent. 



in u ch more oblique. 



few hairs. 



much more acute. 



more ovate and 

 more pubescent. 



much more nume- 

 rous. 



b. hairy on the margins. 



2. Corolla, Yellow ground tinted with red. 



A few dark purplish-red spots surrounded 

 by a paler ring in the throat and tube. 



Smooth, with hairs in the mouth. 



Distinctly 4 lobed, the lobes blunt, the 

 uppermost notched. 



3. a. Stamens length of the tube, nearly 

 parallel. 



Lutea. 



b, c : Anthers yellow inclining to orange, with 

 a few small scattered purple spots. 



Oblique to the filament, converging above. 



d, e: Pollen White, elliptic when dry, and 

 sperical when moist. Some of the grains 

 obscurely three-cornered, many are abortive, 

 but those perfected are of exactly the same 

 size and shape as in purpurea and lutea, 

 being somewhat less than ^ of an inch in 

 diameter. 



4. a. Pistil, covered below with small glandu- 

 lar hairs. 



style cylindrical, with a few hairs on the 

 lower part. 



b. stigma cloven, very obtuse. 



c. ovarium oblong, pubescent. 



d. ovules numerous, and exactly of the same 



shape and size as those of purpurea 

 and lutea. 



less hairy, 

 yellow, 

 no spots. 



more hairy. 



4 lobes deeper, 

 acute, the upper 

 deeply notched. 



somewhatmore ex- 

 tended and diver- 

 gent, according 

 to Koelreuter ; 

 but I could see 

 no very appreci- 

 able difference. 



lighter yellow, no 

 spots. 



hairreaches higher 



up- 

 more acute. 



more acute and 

 less pubescent. 



much less nume- 

 rous. 



