WEST AMERICAN ASPERIFOLLUE. 59 
bristly. Nutlets neither margined nor carinate, erect, attached 
for their whole length, the groove open, little dilated and not 
fureate at base. Style enlarged in fruit and persistent. —Hir- 
sute-canescent small annual herbs of the deserts of southern 
California, Arizona, ete. Leaves all in a radical rosulate tuft, 
the numerous racemose branches repeatedly dichotomous and 
conspicuously leafy-bracted. Roots imparting a deep purple 
stain, a property of Plagiobothrys, and Piptocalyx, but of no 
species of Allocarya, Oreocarya or Krynitzkia. A short 
bract at the base of each branch, the stems otherwise naked. 
l. E. micranrua. — Eritrichium micranthum, Torr. Bot. 
Mex. Bound. 141; Gray, Syn. Fl. 193, excl. var. lepida : Kry- 
nitzkia micrantha, Gray 1. c. excl. var. 
. E. LEPIDa. — Hritrichium micranthum, var. lepidum, 
Gray l. ¢., also Krynitzkia micrantha var. lepida. 
PIPTOCALYX, Torrey. 
Calyx villous-hispid, 5-cleft to the middle, the tube scarious, 
circumscissile about midway, its lower part, together with 
the very short pedicel, persistent; segments herbaceous, fili- 
form, hispid-bristly, nerveless. Nutlets 4, not carinate, 
rather distinctly margined, tuberculate-roughened or smooth 
and shining, the ventral groove divaricately forked at base. 
Hispid-canescent, low, diffusely branching annuals, leafy- 
racemose and -glomerate throughout.—Wilkes Exped. xvii. 
414. t. 19. Krynitzkia, sub-section Piptocalyx, Gray, Proc. 
Am. Acad. xx. 275. 
l. P. ctacumscissus, Torr. l. c.— Lithospermum circumscis- 
sum, Hook. & Arn. Bot. Beech. 370: Eritrichium cireumscis- 
sum, Gray, Proc. Am. Acad. x. 58, Bot. Cal. i. 597, and Syn. 
Fl193: K rynitzkia cireumscissa, Gray, Proc. Am. Aead. xx. 
215 and Syn. Fl. Suppl. 428. 
