58 MIDDLESEX FLOKA. 



Htpocbleris, L. 



"Involucre imbricate; achenium attenuate into a long beak, or 

 slightly attenuate and almost without beak; pappus plumose; 

 receptacle chaffy, chaff deciduous. Flowers yellow or golden." 

 Koch, Syn. Fl. Germ. 

 3. glabra, L. 



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

 of). Adv. from Cal., but a native of Eu. 



" Stem branching, smooth, leafless ; ray florets as long as the 

 involucre; central achenia long-beaked, the marginal without 

 beak." Koch, Syn. Fl. Germ. 



MiCROSEEIS, Don. 



M. Douglasii, Gray. 

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

 of). 



"A very rare species, having been collected only by Douglas him- 

 self, over forty years ago," Watson in lit. 1879. Adv. from the 

 Pacific coast. ' 

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



Leontodon, L., Juss. 



L. AUTtJMNALis, L. Fall Dandelion. 

 Very common. Aug.-Oct. Nat. from Eu. 



HiERACIUM, Tourn. 



H. Canadense, Michx. Canada Hawkweed. 



Rather common. Aug.-Sept. 

 H. scabrum, Michx. Rough Hawkweed. 



Common. Aug. 

 H. venosum, L. Rattlesnake-weed. 



Common. July-Aug. 

 H. paniculatum, L. Panicled Hawkweed. 



Rather common. Aug.-Sept. 

 S. aurantiacum, L. 



Reading, et al. ; occasionally spontaneous. June. Adv. from Eu. 



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



Cbbpis, L. 



"Annuals or perennials, with soft, white pappus and narrow- 

 necked or beaked akenes (some truncate or merely tapering 

 upwards) ; leaves entire or inclined to be pinnatifid ; flowers all 

 yellow." Coulter, R. M. Bot. 



