I 
62 
Distributed frequentiy as P. caruifoUum and P. fmiiculacenm. This 
species had become so confused with P. tnmentosmn that in our first study, 
P. tomentosum Benth. being accepted as a synonym of P. dasycarpum, 
it was taken as the type of P. dasycarpum. This leaving the true P. 
dasycarpum without a name we described it as P. Pringlei. We have dis- 
covered since that the true P. tomentosum is abundantly distinct from the 
much more abundant P. dasycarpum, and hence P. Pringlei becomes a 
synonym under the latter. 
The Asiatic P. dasycarpum, Regel & Schmalh. was not published until 
1871. 
14. P. tomentosum Benth. PI. Hartw. 312. More or less 
densely villous-tomentose, somewhat caulescent or scarcely so, a 
foot or so high: leaves finely dissected into narrow oV filiform seg- 
ments: umbel with 4 to 8 equal rays, with invclucels of linear to 
lanceolate or ovate. acuminate bractlets; rays (fertile) 1 to 3 inches 
long; pedicels 3 to 6 lines long: calyx-teeth evident: fruit oyate to 
orbicular, densely tomentose, 5 to 9 lines long, 3 to 5 lines broad, 
with thickish wings from not quite as broad as body to broader, 
and prominent dorsal and intermediate ribs (concealed by the 
tomentum): oil-tubes mostly 3 in the intervals, 4 on the commis- 
sural side: seed-face somewhat concave. (Fig. 50.) 
On dry hillsides, Central California. Sometimes distributed as P. vil- 
Zosam Nutt., but more usually as P. dasycarpum Torr. & Gray. This species 
is by no means as abundantly collected as P dasycarpum. Fine fruiting 
specimens collected at Elmira, California, by M. K. Curran, first called 
our attention to the fact that this is the original P. tomentosum Benth. and 
distinct from P. dasycarpum Torr. <fe Gray, 
15. P. Mohavense. Having the habit of the preceding 
species, but with much more strigose pubescent leaves, which are 
dissected into very small much crowded linear-oblong or obovate 
obtuse segments: umbel somewhat unequally 6 to 10-rayed, with 
involucels of linear to lanceolate acuminate bractlets; fertile ravs 1 
or 2 inches long; pedicels 2 to 4 lines long: calyx-teeth obsolete: 
fruit broadly elliptical to almost orbicular, with close fine pubes- 
cence, 4 to 5 lines long, 3 to 4 lines broad, with wings not as broad 
as body, and prominent and approximate .dorsal and intermediate 
ribs: oil-tubes 3 or 4 in the intervals, 8 to 10 on the commissural 
side. 
Yucca, Mojave Desert, California, June, 1884 {M. K- Curran). 
The fruit of this species is quite different from that of P. tomentosum, 
to which species it is most closely allied. It is only about half as lai’ge, 
