950 Compositae Antennaria 



plant emits a disagreeable odor which is noticeable several feet from the 

 plant. When any part of the plant is bruised, the odor is very strong and 

 every one on whom I have tested it agrees that it is extremely unpleasant. 

 The nearest approach to it is the odor of the skunk, and I think it should 

 receive a common name to suggest its vile odor. It is local but usually 

 common where it is found. Its habitat is swamps and sloughs in a soil that 

 is slightly acid. Usually associated with pin oak, buttonbush, sweet gum, 

 swamp cottonwood, Hibiscus palustris, Panicum stipitatum, and Juncus 

 effustis var. solntus. I once found it on high ground in a logging road 

 but this is no surprise, because I planted it in Bluffton in our garden and 

 it grew very vigorously which shows that it will grow wherever its seeds 

 may be deposited. 



Md. to 111., southw. to Fla., Mo., and Okla. 



8978. ANTENNARIA Gaertn.' 



Rosette leaves (those of the previous year) comparatively small; blades 0.5-1.4 cm 

 wide and 2-4.5 cm long, lower surface with only the midrib prominent; exserted 

 portion of styles 0.5-3 (3.5) mm long. 

 Middle and upper stem leaves terminated by a flat or merely involute scarious ap- 

 pendage; rosette leaves gradually tapering to the sessile base, oblanceolate to 

 spatulate-oblanceolate, or narrowly obovate, subacute, rarely rounded, 1-nerved 

 beneath. 

 Stolons decumbent, the leaves much reduced except the apical ones which become 

 enlarged at maturity; upper surface of rosette leaves dull, glabrous or some- 

 what tomentose; upper surface of leaves of stolons and stems tomentose; 

 pistillate heads 1-8, usually crowded into a cluster, later becoming racemose; 

 staminate inflorescence a terminal cluster of heads; pistillate corollas 4.5-5.5 

 mm long; achenes mostly 1.2-1.5 mm long; exserted portion of styles 1-3 (3.5) 



mm long; style branches mostly 0.5-0.8 mm long 1. A. neglecta. 



Stolons ascending, leafy throughout; upper surface of rosette leaves, stolons, and 

 stem a bright green and generally glabrous from the first or loosely tomentose 

 (the tomentum tardily deciduous); pistillate inflorescence of 3-18 heads in a 

 corymb; pistillate corollas 4.5-5.5 mm long; exserted portion of style mostly 



1-1.5 mm long. (To be sought in northern Indiana.) A. canadensis. 



Middle and upper stem leaves subulate-tipped or mucronate, without a scarious ap- 

 pendage (except sometimes on the bracteal leaves of the inflorescence); stolons 

 at once ascending, leafy throughout but the terminal leaves the largest; leaves of 

 the stolons abruptly contracted below the middle into a petiolelike base, tomen- 

 tose above as are those of the stem; inflorescence generally of 5-8 heads in a 

 tei'minal corymb; corollas of pistillate flowers 3.7-5 mm long; achenes 1.1-1.5 mm 



long; exserted portion of style usually 0.5-1.5 mm long 2. A. neodioica. 



Rosette leaves comparatively large; blades 1.4-2.5 cm wide and mostly 3-5 cm long, 

 with 3-5 somewhat prominent ribs beneath (leaves of young stolons much smaller). 

 Inflorescence of the pistillate and staminate plants each consisting of a single termi- 

 nal head; lobes of the corolla of pistillate flowers conspicuously glandular under 

 a sixteen diameter magnification, lobes of staminate flowers generally 0.7-1 mm 

 long (longer and larger than those of any other Indiana species) . .3. A. solitaria. 



'Adapted mostly from the key in the "Flora of the Cayuga Basin" by Wiegand and 

 Karnes. The measurements are those of specimens in the Deam herbarium and, no 

 doubt, the range of measurements would be changed if a larger series had been 

 measured. 



