rs (ib eke vo ey 
138 Muhlenbergia, Volume 8 sa 
' Oligomeris ruderalis (Nutt.) n. comb. 
The genus Olzgomeris has thus far but five species assigned 
to it. In Torr. and Gray, Fl. N. A. 1: 125, there was published 
as a new genus and new species Eliimia ruderalis, based on a 
manuscript by Nuttall. This plant was by DeCandolle (Prodr. 
16: 587) referred to Oligomeris subulata (O. glaucescens Camb.). 
Since that time Nuttall’s species has been allowed to rest in 
synonymy. Admitting that Nuttall’s genus is a homonym, there 
seems to have been good reasons why the species should not have 
been rejected. 
Four of the five species belong to South Africa. The other, 
O. glaucescens Camb., is said to extend from the Canary Islands 
to India, and also “seemingly indigenous in North America.” 
Aside from the extreme improbability of such a range as that, 
one may note that the capsule of Nuttall’s plants, while 4-lobed 
like the other, is distinctly bilobed as to each of the main lobes, 
and that the seeds are materially larger. No doubt other char- 
acters equally good could be found were material of both species 
at hand. 
Frequent on dry gravelly mesas at Moapa, Lincoln county, 
Nevada, May 12, 1905 (1129) P. B. Kennedy. 
, 
Lepidium albiflorum n. sp. 
A low, much branched biennial, with small white flowers, 
deeply toothed pinnatifid leaves, and a long tap root. Stems, 
leaves and pedicels minutely and finely pubescent: leaf segments 
irregularly distributed and variable in size, sometimes a verticel 
of dried up petioles from the previous year’s growth surround- 
ing the base: flowers pure white: petals oblanceolate, 3.5 min. 
long and less than 2 mm. wide, prominently veined: calyx seg- 
ments ovate, minutely pubescent, apex and margins scarious, 
2min. long and 1mm. wide: filaments broad, about 2 mm. long: 
mature capsule from glabrous to finely pubescent, sub-orbicular, 
2.5 mm. long and about as wide, bifid at apex, finely reticulated: 
style prolonged beyond the capsule .5 mm. to 1 mm.: seeds 1.3 
