FLOWERING PLANTS OF NANTUCKET 273 
CHRYSANTHEMUM PARTHENIUM (L.) Pers. 
Occasionally spontaneous by streetsides and in waste places. 
Not yet in flower June 14, 1908; in full flower June 27, 1912. 
The more common form of this plant seen in old gardens and 
as an escape, has a broad pale yellow disk and short rays and would 
appear to be the var. breviradiatum Rouy (Fl. de France 8: 
263). On this understanding the less usual plant, with us, having 
a smaller bright yellow disk and longer rays would be the typical 
form. This was found growing sparingly in a barnyard west of 
the town in full flower September 17, 1899, and in two instances 
by streetsides in the town. 
-*CHRYSANTHEMUM BALSAMITA L. 
A casual estray from cultivation, and at a few stations per- 
sistent and spreading in abandoned grounds. Large flower heads 
August 29, 1904; heads yellow but not actually in flower Septem- 
ber II, 1907. 
TANACETUM VULGARE L, 
Frequent near old barns and farm houses and in abandoned 
grounds usually growing in close masses and appearing as ifa 
survival of cultivation. The var. crispum DC. is perhaps more> 
frequent than the typical form. Begins to bloom in August and 
continues in full flower through September. 
ARTEMISIA CAUDATA Michx. 
A characteristic plant of the commons and open sandy places 
and often growing in pure sand among the beach grass. No heads 
visible June 27, 1910; inflorescence appearing June 20, 1908; 
not quite in bloom July 13, 1912. 
ARTEMISIA VULGARIS L. 
An infrequent weed, seen only about the wharves. 
flower September 5, 1904. 
*ARTEMISIA BIENNIS Willd. 
A single stout plant near the w 
5, 1904; one plant back of the bea 
the heads very immature. 
In full 
harves just in flower September 
ch at Wauwinet, June 20, 1910, 
*ARTEMISIA ANNUA L. 
Collected near the Springfield House in 1901 and, more poiied 
west of the town, by Mrs. Flynn; Main Street, September 14, 1914, 
Walter Burdick, specimen in herbarium of Miss Gardner. 
