388 



CARD'UACEAE. 



Eupatorium odoratum L., Bushy Thoroughwort, listed as Bermudian 

 by Lefroy and cited by Hemsley, but not by other authors, has not been found 

 here by recent collectors. It is a widely distributed plant of tropical America, 

 reaching southern Florida, perennial, much branched, 3'^-6° high, with ovate 

 to lanceolate toothed leaves 2'-4' long, and many small cylindric heads of 

 whitish or purple flowers, the 3-nerved involucre-bracts imbricated in several 

 series. [E, conysoides Vahl.] 



Eupatorium macrophyllum L., Large-leaved Thoroughwort, West In- 

 dian, is recorded by Hemsley as preserved in the Sloane Herbarium at the 

 British Museum of Natural History, as from Bermuda (Journ, Bot. 21: 257, 

 258), but I am not satisfied with the evidence adduced that the specimen he 

 based his determination upon was really collected here. It is a West Indian 

 species of wet regions, with large flaccid ovate petioled leaves and numerous 

 small heads of white flowers. 



2. BACCHAEIS L. 



Dioecious shrubs, with alternate leaves, and small paniculate or corymbose 

 heads of tubular flowers. Involucre campanulate in our species, its bracts im- 

 bricated in several series, the outer shorter. Eeceptacle flat, naked, commonly 

 foveolate. Corolla of the pistillate flowers slender, that of the staminate 

 tubular, 5-lobed. Anthers obtuse and entire at the base. Style- branches nar- 

 row or subulate, those of the fertile flowers smooth, exserted, those of the 

 sterile flowers rudimentary, tipped with an ovate pubescent appendage. 

 Achenes more or less compressed, ribbed. Pappus of the fertile flowers 

 copious, capillary, that of the sterile flowers short. [Named for Bacchus; 

 originally applied to some difl'erent shrubs.] About 300 species, all American, 

 most abundant in South America. Type species: Bacchus ivifolia L. 



1. Baccharis glomeruliflora Pers. 

 Doc-bush. (Pig. 422.) A branching 

 shrub 3°-10° tall. Leaves leathery, spat- 

 ulate to cuneate-obovate, f'-l' long, en- 

 tire, or sharply toothed above the middle ; 

 heads solitary and sessile in the upper 

 axils or few in sessile or short-peduncled 

 clusters; staminate involucres campanu- 

 late, 2" high, with ovate to oblong-ovate 

 obtuse bracts; pistillate involucres ovoid, 

 21"-^" high, with ovate to oblong obtuse 

 bracts ; pappus bright white, barely twice 

 as long as the involucre; achenes nearly 

 1" long. [B. Jieterophylla of Eein, 

 Eeade, Lefroy, Coulter, H. B. Small and 

 Harshberger; B. lialimifolia of Mills- 

 paugh.] 



Common in marshes : occasional on hillsides. Native. Southeastern United 

 States. Flowers in late autumn and winter. Tne abundant white pappus of the 

 fertile bushes make this one of the most conspicuous and attractive plants toward 

 the close of the year. Its fruit was, doubtless, transported to Bermuda on the wind. 



3. PLUCHEA Cass. 



Pubescent or glabrous herbs, some species shrubby, with alternate dentate 

 leaves, and small heads of tubular flowers in terminal corymbose cymes. In- 



