12 PITTONIA. 
except as regards the form of it, and the plants all agree in 
habit, as well as in a coarser pubescence, to constitute a genus 
very unlike Plagiobothrys. 
ALLOCARYA. 
Pedicels turbinate-thickened and more or less distinctly 
5-angled under the calyx, persistent, more or less indurated 
in age. Calyx 5-parted to the base; segments spreading, 
and in fruit somewhat accrescent. Corolla salver-form with 
short tube, yellow throat and white limb. Nutlets ovate or 
lanceolate, crustaceous, opaque or vitreous-shining, smooth 
or variously tuberculate and rugose, muriculate or even 
strongly glochidiate, often carinate on one or both sides, at- 
tached by an infra-medial or basal, concave, but sometimes 
raised and stipitate scar, to a low gynobase. Low herbs, 
mostly annual, with linear entire leaves, the lowest always 
opposite and connate-perfoliate: branches numerous and 
commonly depressed, racemose throughout almost their whole 
length. Plants vernal in their flowering, confined to low, 
moist grounds, herbage usually light green and somewhat 
succulent, more or less hirsute, leaves linear and entire.— 
Species of Myosotis, Lithospermum and Eritrichium of vari- 
ous earlier authors, and of Echinospermum and Krynitzkia 
of Asa Gray. 
* Annuals ; pubescence setose. 
+ Racemes loose and more or less leafy-bracted. 
l. A, LITHOCARYA. Stem erect, a foot high, simple or 
parted below the middle into a pair of slender, loosely race- 
mose branches: pubescence sparse and appressed except on 
the ferruginous-hirsute calyx: lower pairs of leaves joined 
at base into sheaths 2—3 lines long: lowest pedicel (in the 
fork) a half-inch long, the others about a line, all slender, the 
lower subtended by leafy bracts: segments of the calyx lan- 
