h 



* 3 





( 



1002] NOTES 



121 



both the basal leaves are at times relatively as broad as those of 

 A. Braincrdii. 



Antennaria ambjgens (Greene) Fernald, Rhodora 1:150. 

 1899. — ^- ar?wglossa ambigeiis Greene, Pittonia 3:320. 1898. 

 A. Parlinii ambigeiis (Greene) Fernald, Proc. Bost. Soc. Nat. 

 Hist. 28: 244. 1898. A.fallax Greene, Pittonia 3: 321. 



\x Greene, Pittonia 3: 321. 1898. — 

 This is the commonest of the eastern species of Antennaria 

 which have large heads and ample, plantain-like basal leaves. It 

 ranges from Minnesota. Ontario, and Maine to Kansas, Missis- 

 sippi, and Virginia. As many other American species, it is quite 

 variable. It is nearly always more or less glandular, quite as 

 often so in the acuminate-bracted forms as in the typical one. 

 CiHate hairs may be found about the inflorescence, on the stems, 

 and on the margins and surfaces of the leaves. These hairs are 

 usually purple, but when occurring on the surfaces of the leaves 

 are colorless. The upper surfaces of the basal leaves are perma- 

 nently arachnoid or tomentose above, and the tomentum of their 

 lower surfaces is generally persistent. Often, however, it forms 

 a crustaceous coating which occasionally is deciduous in flakes. 

 The involucral bracts of the pistillate plants may be either nar- 

 row and attenuate or broader and petaloid. Often they are 

 purplish as in A. Parli?iii, There is some variation in the stature 

 of the plant, the leafiness of the stems, and the character of the 

 mflorescence, but these variations fail to furnish any diagnostic 

 characters. The staminate plant is somewhat lower and its 

 involucral bracts have ovate or oblong, obtuse, petaloid tips. 

 The pappus bristles are either clavellate or more or less dilated 

 and then bluntly toothed or somewhat lacerate, the filamentous 

 portion serrulate upwards. 



The type specimens of A, arnoglossa ambigois were collected 

 near Brookland, D. C, and Professor Greene informs me that 

 he has found but one patch of it and that situated in a field 

 of ^isA./a//ax. These specimens are slightly glandular and 

 the tips of the outer involucral bracts are oblong and obtuse, 

 those of the inner acuminate. On one of the sheets the plants 

 have some purple hairs about the inflorescence. 



