MIDDLESEX FLORA. 53 



B. chrysanthemoides, Michx. LARGER BUR-MARIGOLD. 

 Natick (Austin Bacon) ; Acton (Dr. C. W. Swan) ; Bedford and 

 Billerica (C. W. Jenks) ; Concord (Minot Pratt). Not very com- 

 mon, and not reported in the northern part of the county. Aug.- 

 Sept. 



B. Beckii, Torr. WATER MARIGOLD. 



Lowell, Bedford, Woburn, Ashland, et al. Not very common. 

 Aug.-Sept. 



B. Upinnata, L. SPANISH NEEDLES. 



Lowell, "dump" (Dr. C. W. Swan). Aug.-Sept. Adv. from 

 farther west. 



HEMIZONIA, DC. 



H. fasciculata, Torr. & Gray, var. ramosissima, Gray. 

 N. Chelinsford, wool-waste (Rev. W. P. Alcott). Adv. from Cal. 

 For description, see Gray, Syn. Fl. N. A. 



LAYIA, Hook. & Arn. 



L. platyglossa, Gray. TIDY-TIPS. 



N. Chelmsford, wool-waste (Rev. W. P. Alcott; specimen in herb, 

 of). Adv. from Cal. For description, see Gray, Syn. Fl. N. A. 



BAERIA, Fisch. & Meyer. 



B. gracilis, Gray, var. tenerrima, Gray. 



N. Chelmsford, wool-waste (Rev. W. P. Alcott ; specimen in herb, 

 of). Adv. from Cal. For description, see Gray, Syn. Fl.N. A. 



B. ullginosa, Gray. 



N. Chelmsford, wool-waste (Rev. W. P. Alcott; specimen in herb, 

 of). Adv. from Cal. For description, see Gray, Syn. Fl. N. A. 



ClLENACTIS, DC. 



C. glabriuscula, DC. 



N. Chelmsford, wool-waste (Rev. W. P. Alcott). Adv. from Cal. 

 For description, see Gray, Syn. Fl. N. A. 



HELENIUM, L. 



*H. autumnale, L. SNEEZE-WEED. 

 Concord, int. from 111. by Minot Pratt. Sept. 



H. tenuifolium, Nutt. 



Lowell, "dump" (Dr. C. W. Swan) ; Maiden, cotton-waste, Gould- 

 ing's Mill (F. S. Collins). Adv. from the South. For description, 

 see Woods Bot. & Fl. 



GALINSOGA, Ruiz. & Pav. 



*G. PARVIFLORA, Cav. 



Cambridge, waste places (Man. 2d ed.) Locally nat. from So. Am. 



