363] FLORA OF COLUMBIA AND VICINITY 22 1 



ing being no greater than the reversions called for under 

 Mendel's law. 



910. V. pseudodrummondii Daniels. Nov. spec. 

 Stems ii^ to 2 metres in height, densely tomentose with 



whitish tomentum; leaves large, elliptic-lanceolate or elliptic, 

 acuminate at both base and apex, the margins sharply and 

 deeply serrate, or those of the uppermost leaves subentire, 

 under surfaces finely tomentose, the upper scabrous; cymes 

 ample, subpaniculate, the larger branches leafy; peduncles 

 rather slender, seldom noticeably thickened upwards, the 

 central heads subsessile; heads large, 8-12 mm. high, oblong 

 or cylindric; bracts reddish purple, floccosely ciliate at the 

 margins, lanceolate and long acuminate, the tips spreading 

 and more or less reflexed; pappus purplish, about twice the 

 length of the hispidulous achene. 



Very abundant in fields and pastures, where it blossoms 

 about the first of August. The plant may be briefly describ- 

 ed as intermediate between V. Baldwinii Tott., from which 

 it differs in the larger oblong heads and the lanceolate 

 bracts, and V. Drummondii Shutthv., from which it differs in 

 the broader leaves and the recurved bracts. But for its 

 abundance it might perhaps be considered a hybrid between 

 the two species mentioned above. It, however, is much 

 more common than V. Driemmo/idii ShuttUv., which is se\dom 

 typical here except in swamps. 



Jackson county, Missouri. 



911. V. interior Small. Inland ironweed. 

 Frequent in old fields. 



Missouri and Kansas to Texas. 



912. V. Drummondii Shuttlw. \_V. altissima grandiflora 

 Gray]. Drummond's ironweed. 



In the swamp south of Hinkson creek, and in old fields. 

 Michigan to Illinois and Missouri; Kentucky and Ala- 

 bama to Texas. 



912a. V. Drummondii Shuttlw. X V. interior Small. 



Plants intermediate between the above two species are com- 

 mon in old fields, and may perhaps represent a new species, 



