lol 



28. *Helianthus scaherrimus Ell. A species of the Middle We.st 

 that is common in gardens, and freely escaping to waste grounds 

 and fields. 



I am under obligation to all the botanists mentioned above 

 for their kindness in determining difficult specimens. A few 

 further notes may be added by way of correction and extension 

 of previous lists: 



1. Lolium perenne L. var. cristatum Doell, which has rested 

 on a single specimen from Eola, Polk Co., has appeared in 

 waste ground in many places about Salem. 



2. Car ex Hallii Bailey is now referred by Mackenzie to C. 

 niidata W. Boott (Erythea 8: 80. 1922). 



3. Car ex specifica Bailey var. hrevifructus Kiik. is referred by 

 the same authority to the new species C. fracta Mackenzie (1. 

 c. 8: 38). 



4. Carex olympica Mackenzie is now referred by the author 

 to C. pachystachya Cham. (1. c. 8: 45). 



5. Sisymbrium Sophia L. is now common about the railroad 

 cattle-pens at Salem. 



6. Lobularia maritima (L.) Desv. is not infrequent on rubbish- 

 heaps and street-parking about Salem. 



7. Galium tricorne Stokes is abundant in grain-fields at Eola, 

 Polk Co. 



8. The "Erigeron corymbosus Nutt." of the list in Torreya 

 18: 30. 1918 (no. 135) is according to H. M. Hall E. decumbens 

 Nutt. 



9. Peltiphyllum peltatum (Torr.) Engler, which was reported 

 in Torreya 18: 223. 1918 as "observed from car-window" 

 along Mary's River in Benton Co., was confirmed this spring 

 by a student who brought in a specimea from the same locality. 



10. " Potentilla canadensis L.," No. 30 of the list in Torreya 

 18: 224, is determined by Bayard Long as a double-flowered 

 form of P. procumbens Sibth., with five leaflets instead of three 

 (perhaps the forma pentamera Rydb.) 



11. '^Convolvulus polymorphus Greene." Further study and 

 comparison with authentic specimens seem to place this nearer 

 C. occidentalis Gray. 



12. The " Cryptantha Torreyana (Gray) Greene var. grandi- 

 flora (Rydb.) Nels. & Macbr." (Torreya 18: 225), and the " C. 

 Hendersonii (Nels.) Piper" (no. 67, Torreya 20: 40. 1920) 



