RYDBERG: STUDIES ON THE ROcKy MOUNTAIN FLORA 309 
lobes are equal or not, but in his subsequent treatise of the genus 
in De Candolle’s Prodromus he expressly stated that they are 
unequal. In the only two specimens found in the herbarium of 
the New York Botanical Garden, in my opinion belonging to E£, 
strictum, the outer perianth lobes are very broadly oval while the 
inner are oblong. The species should therefore be associated 
with E. dichotomum Dougl. and not with E. racemosum Nutt. and 
E. Wrightii Torr., differing from the first principally in the glabrous 
involucres. Both E. strictum and E. dichotomum have been 
collected in Idaho. 
The genus Eriogonum is represented by over one hundred 
species in the Rocky Mountain region. The following ones are 
not recorded either by Coulter & Nelson nor in my Flora of Colo- 
rado or in my Flora of Montana, but they should be included in 
the flora: E. androsaceum Benth. in Alberta, Montana, and British 
Columbia; E. thymoides Benth., E. compositum Dougl., E. proltf- 
erum Benth., E. elatum Dougl., E. strictum Benth., E. spergulinum 
A. Gray, and E. vimineum Dougl., in Idaho; E. dichotomum in 
Idaho and Montana; E. micranthum Nutt., E. nidularium Coville, 
and £. Baileyi S. Wats., in Idaho and Utah; E. Porteri Small, £. 
pulvinatum Small, E. longilobum M. E. Jones, E. ochrocephalum 
S. Wats., E. villiflorum A. Gray., E. Shockleyi S. Wats., E. poli- 
folium Benth., E. Thompsonae S. Wats., E. aureum M. E. Jones, 
E. spathulatum A. Gray, E. leptophyllum Torr., E. bicolor M. E, 
Jones, FE. clavellatum Small, E. sulcatum S. Wats., E. Mearnsit 
Parry, E, ramosissimum Eastw., E. densum Greene, E. turbinatum 
Small, E. insigne S. Wats., E. deflexum Torr., E. nutans T. & G., 
E. Wetherillii Eastw., E. Thomasii Torr., E. subreniforme S. Wats., 
E. P, arryi A. Gray, E. Ordii S. Wats., E. trichopodum Torr., Pm 
angulosum Benth., and E. puberulum S. Wats., in Utah; E. Hooker 
in Utah and Wyoming; E. tenellum Torr. in Colorado; and E, 
depauperatum Small in the Black Hills of South Dakota. 
Chorizanthe spathulata Small sp. nov. 
oe more or less branched annual; stem 5-20 cm. high, erect, 
I ‘Bose-canescent ; branches erect, strict; lower leaves petioled, 
on 3cem. long; blades broadly spatulate, somewhat fleshy, hirsute- 
Mgose on both sides, rounded and sometimes mucronate at the 
