392 Gleason : The pedunculate species of Trillium 



Trillium foctidum Salisb. Parad. Lond. pi. 35. 1806. 

 Trillium obovalum Pursh, Fl. Am. Sept. 245. 18 14. 

 Trillium erectum atropurpureum Pursh, Fl. Am. Sept. 245. 



Trillin m erect*. m album P u rs h , Fl . Am. Sept. 245. J 8 1 4 . 



1814. 



■P 



1817. 



/' 



■idiflorum Hook. Bot. Mag. pi. 3230. 1833- 

 ■vum Torr. Fl. New York 2 : 296. 1843. 



Trillium album Small, Fl. S. U. S. 278. 1903. 



Peduncle 2-8 cm. long, erect or nearly so ; petals ovate to 

 narrowly oblong, dark-purple, white or greenish-white ; anthers 

 5-9 mm. long, once and a fourth to twice as long as the filaments. 



Type locality: Virginia. 



Distribution : New Hampshire to Ontario, south to Pennsyl- 

 vania, and in the mountains to Virginia, West Virginia and North 

 Carolina ; nearly all of its range lies in the Atlantic watershed. 



The species is very variable in the color, size, and shape of the 

 petals, but the different forms so intergrade that specific separation 

 is impossible. Of the forms described by Rendle, number 2 ap- 

 parently refers to the plant described in this paper as T. declinatum. 

 A plate of Willdenow's illustrating his T. pendulum leaves no 

 doubt of its identity with the white-flowered form of T. erectum, 

 but later usage of the name may possibly refer in part to T. cer- 

 nuum. Terms have been somewhat confused so that no distinction 

 is made between a nodding or pendulous peduncle, hanging below 

 the leaves, and a nodding flower upon an erect peduncle. There 

 is some doubt also concerning the species described as T. obovatum 

 by Pursh. It had white, obovate petals, and in this resembles T. 

 grandiflorum, but various authors have since regarded it as syn- 

 onymous with T. erectum, and it will be so treated here. Under 

 either interpretation it has no bearing on the nomenclature of any 

 species. 



7. Trillium Smallii Maxim. Mel. Biol. 11 : 862. 1883 

 Petals none or abortive : anthers short, dilated, blunt, about 



3-4 mm. long. 



Japan 



Rendle would consider this but a form of T. Tschonoskii, with 

 reduced or abortive petals. This peculiarity, however, seems to 



