SUNFLOWER FAMILY 
539 
Plants annual; heads erect, densely clustered, rarely solitary, cylindric, 1.5-2.5 cm. long, 1-1.5 cm. wide, rather 
ew w-flowered; phyllaries spreading slightly near the tip. 
a 
Phyllaries more or less scarious-margined, the tips glabrous and smooth except on the ap ape margin. 
richom 
uiflorus. 
oe 
. C. pycenocephalus. 
2. 
rina 0° ea rian arena -margined, the tips roughened on the margin and back by sient caus a 
1. Carduus nitans L. Musk Thistle. Fig. 5936 
Carduus nutans L. Sp. Pl. 821. 1753. 
ants pinay thinly t poneitiees or glabrous 
elongate branches abov 
s; stems =p Sr 
the base, the lower leafy 
win 
1.5 (or 2) m. tall, simple or 
Po mre 3 winged, the peduncle 
g& 
5934. Cirsium campylon 
5935. Cirsium fontinale 
. Carduus nutans 
5937. Carduus tenuiflorus 
