v 
‘108 Muhlenbergia, Volume 3 
S. HIRTELLUM (Greene) Small, is a good and quite distinct 
‘Species, and not a merely hirsute variety of mzcranthum as some 
have supposed. It is most readily recognized by the hirsute, 
undulate-crisped leaves, triangular in outline on the stem, and 
in herbarium specimens appressed to the stem, whereas those of 
micranthum are lanceolate or oblong in outline, and stand at an 
acute or even right angle or secund to the stem. The purplish 
stem and the more erect and simple habit of the plant further 
help to identify it. This plant seems widely distributed in the 
northern half of the State. From the south there are the fol- 
lowing specimens: Las Tunas canyon, Santa Monica, Abrams 
1703; Arroyo Seco, Los Angeles, Greata 312. 
S. BISTORTA REEDII Parish, is, I think, the mountain form 
of .S. hzrtellum as found south of Los Angeles: Strawberry peak, 
Abrams 2008; Santiago peak trail, Abrams 1792; Wilson peak, 
Los Angeles county, Davidson 1749; Bluff’s ranch, Riverside, 
Reed 554; Campo, San Diego county, Abrams 3558. Many of 
the plants from Wilson’s peak have lacerate petals as in the 
type, but this is likewise a feature of some that are undoubtedly 
genuine mzcranthum. ‘This variety differs somewhat from the 
true Azrtellum in being less hirsute and less foliaceous, and has 
sufficient character to warrant a varietal name. If I am correct 
in assuming that this plant is a variety of hzrtellum, the name 
‘S. bistorta Reediz becomes obsolete. I shall name it S. Azrtel- 
lum var. montanum. 
S. PALLIDUM Abrams. ‘Two plants of this species from 
Palm Springs are the only ones in the herbaria. They are 
Grant 6750, and Davidson 1090. Palm Springs is the type 
locality. The plant is the desert representative of S. mzcran- 
thum, and bears the same relation to mzcranthum as S. Hallit 
bears to S. veztchianum. Both, so far as the meagre collections 
indicate, are limited to the Colorado desett. 
Los Angeles, California. 
