and Newton's Water Colors; calyx tube having areoles bearing white, flexi 
/V 
ble spines, 10 to 16, 4 mm. long; areoles on upper part bearing small 
bracts slightly darker than tube, and tipped with red; .petals and sepals 
about same length, 12 to 14. mm. long, 3 mm. wide, linear; ovary 2.5 mm. 
in diameter, 3 mm. deep; throat 8 mm. long, 7 mm. wide at. top, 1.5 mm. wide 
at base; stamens numerous; filaments white, some tinged with green, slender 
5 to 7 mm. long; anthers pale yellow; style 1.4 cm. long, v/hite, upper part 
greenish white; stigma lobes 6, short, same color as petals. 
Collected by P. W. Roman near Colorado Springs, Colorado, where they 
are kno?/n as the pin cushion cactus, and sent here in April, 1912. 
m 
