926 



COMPOSITAE 



Solidago 



50 



Map 2024 



Solidago sphacelata Raf. 



50 



Map 2025 



Solidago speciosa Nutt. 



o "To 

 Map 2026 



Solidago rigida L. 



19. Solidago sphacelata Raf. (Brachychaeta sphacelata (Raf.) Britt.) 

 Map 2024. Restricted mostly to the unglaciated region where it is usually 

 found in poor clayey soil on the crests and slopes of ridges and on the tops 

 of high banks along streams. 



I have had this goldenrod in cultivation many years and I regard it as 

 the most beautiful of the genus in our area. In good clay loam it grows 

 to a height of about three feet with many long spreading or recurving 

 branches. It begins to flower about the middle of September and continues 

 until killing frost. It self sows in exposed soil but I have never found it as 

 an escape although no effort has been made to prevent it. 



I am keeping this species in the genus Solidago because it is known to 

 hybridize with Solidago ulmifolia and I do not like bigeneric hybrids. 



Va. to s. Ind., southw. to e. Ga. and Ala. 



20. Solidago ovata Friesner. Our only specimens of this species were 

 collected by Ray C. Friesner on a clayey wooded ridge west of Centerton, 

 Morgan County and in a similar habitat in Brown County. Friesner has 

 had this form under cultivation in the Butler University botanical garden 

 and his study of the plant convinces him that it is a hybrid of Solidago 

 sphacelata Raf. and Solidago ulmifolia Muhl. I quite agree with him 

 on the status of the plant. 



Known only from the type locality in Morgan County and from one 

 collection in Brown County. 



21. Solidago speciosa Nutt. (Solidago rigidiuscula and Solidago spe- 

 ciosa var. rigidiuscula of Indiana authors.) Map 2025. Infrequent to fre- 

 quent in the lake area and absent or local south of it. It grows only in 

 sandy or gravelly soil and is found in open wooded dunes, open black and 

 white oak woods, and in sandy prairies. 



N. S. to Minn., southw. to N. C, Ark., and Kans. 



22. Solidago rigida L. (Solidago rigida f. magna Clute.) Stiff Gol- 

 denrod. Map 2026. Infrequent in prairie and decadent prairie habitats 



