PRIORITIES IN GENERIC NOMENCLATURE. 177 



5. A. SCORZONER.^FOLIA. AmmogetoH Scorzouerw/olium, 

 Schrad. Cat. Sem. Goett. 1 (J833). Troxiwo?! glaucum, var. 

 dasycephalum, Torr. & Gray, FL ii. 490 (1843) ; T. pumiluin, 

 Nutt.? This plant is not at all glaucous, and is othei'-vvise 

 distinct as need be from all phases of A, glauca. It lias an 

 almost woolly involucre and a chaffy receptacle. It is com- 

 men along the upper Missouri. 



6. A. BARBELLULATA. Troximon harbellidainmy Greene, 

 in Gray Syn. FL 437 (1884), 



7. A. ALRESTRis. Troximou alpestre^ Gray, Proc. Am- 

 Acad. xix. 70 (1883). 



8. A. AURANTiACA. Troximou aiirantiacum^ Hook. FL i. 

 300. t, 104(1833). 



9. A. PURPUREA. Macrorhyyiclius purpiireus, Gray, PL 

 Fendl. 114 (1849). Troximon piirjittreiim, Greene, Pitt. 



iL 76 (1890). 



10. A. GRACILENTA. Troximon gracilejis, Gray,^Proc. Am. 

 Acad. xix. 71 (1883). 



Var. (?) Greener T. gracilensj var.? Greenei, Gray, 1. c, 



11. A. EL ATA. Siylopappus elatus, Nutt. Trans. Am. 

 Phil. Soc. vii. 433 (1841). Macrorhynchns elalns, Torr. & 

 Gray, FL ii. 492 (1843), Troximon Nuttallii, Gray, Proc. 

 Am. Acad. ix. 21G (1874). 



12. A. APARGioiDES. Troximoii apargioides, Less. Lin- 

 ntea, vi. 501 (1831) ; Gray, Syn. Fl. 438. 



I 



13. A. HiRSUTA. Leontodon hirsuUim, Hook. Fl. i. 296 

 (1833). Taraxacum hlrsidiim, Torr. & Gray, Fl. ii. 494 

 (1843). Maerorhyiichus humili's, Benth. PI. Hartw. 320 

 (1849) : M. Harford ii, Kell. Proc. Calif. Acad. v. 47 (1873). 

 Troximon humile, Gray, Proc. Am. Acad. xix. 72 (1S83). 



