PIPER FLORA OF THE STATE OF WASHINGTON. 473 



Racemes bracteate; corolla funnelform; 



roots thick Lithospermum (p. 486). 



Nutlets erect or oblique, attached above the 

 base, a more or less prominent fruiting 



receptacle (gynobase). ^ ^ 



Corolla yellow or orange, with naked 



open throat Amsinckia (p. 480). 



Corolla white or blue with throat more 

 or less fornicate — that is, bearing 

 prominent swellings. 



Nutlets very flat and thin, attached 

 above the middle, the margins 



spinulose Pectocarya (p. 482). 



Nutlets thick, attached at or below 

 the middle. 

 Perennials. 



Corolla blue; nutlets ob- 

 lique, the dorsal surface 

 with an acute, entire or 



spiny margin Eritrichium (p. 480). 



Corolla white or whitish; 

 nutlets ovate-trigonous . Oreocarya (p. 481). 

 Annuals. 



Calyx circumscissile Piptocalyx (p. 481). 



Calyx not circumscissile. 

 Gynobase elongate, 

 the nutlets attached 

 by one-third their 



length or more Cryptanthe (p. 483). 



Gynobase low. 



Nutlets oblique 

 or incurved, at- 

 tached about 

 the middle by 

 a caruncle-like 

 process; leaves 



all alternate.. Plagiobothrys (p. 482). 

 Nutlets attached 

 just inside the 

 base; lower 

 leaves opposite Allocarya (p. 485). 



HELIOTROPIUM. 



1. Heliotr opium curassavicum L. Sp. Pl. 1: 130. 1753. 



1 Ileliotropium chenopodioides Willd. Enum. Hort. Berol. 175. 1809. 



Type locality: "In Americae calidioris maritimis." 



Range: Washington to Virginia and southward. 



Specimens examined: Junction Cr&hand'Wihon creeks, Sandberg (& Leiberg 339; Walla 

 Walla, Lyall, June, 1860; Waitsburg, Horner 379; without locality, Vasey in 1889; Walluja, 

 Cotton 1074O. 



Zonal distribution : Upper Sonoran. 



