256 ROBINSON. 
late’ ovatis obtusis serratis (basi leviter cordata integra) 2-2.8 em. 
longis 1.5-2 em. latis coriaceis basin versus penniveniis supra basin 
3-nervatis utrinque reticulatis supra dense cum glandulis sessilibus 
praeditis aliter glabris subtus fulvo-pubescentibus et sparsius glanduli- 
feris; petiolo: 1-3 mm. longo fulvo-tomentello; corymbis numerosis 
arvis in ramis terminalibus; ramulis pedicellisque griseo-hirsutis; 
capitulis ca. 10-floris ca. 6 mm. altis; involucri campanulati squamis 
7-10 subaequalibus vix imbricatis lanceolato-oblongis acutiusculis 
dorso fulvyo- vel griseo-tomentosis; receptaculo parvo plano calvo 
glabro; corollis (valde immaturis) verisimiliter albidis 5 mm. longis 
glabris; tubo proprio ca. 1 mm. longo; faucibus distincte ampliatis 
subeylindricis ca. 3 mm. longis; achaeniis deorsum attenuatis in 
angulis cum glandulis sessilibus vel brevissime stipitatis praeditis.— 
Cotompi1a: Guadalupe, Dept.. Cundinamarca, alt. 2900 m., Bros. 
Apollinaire & Arthur, no. 27 (Type Gr.). 
Evupatortum Roturocknu Gray. This species seems to be capable 
of subdivision into the following varieties. 
Var. typicum, foliis firmiuscule membranaceis ovatis vel lanceolatis 
basi obtusis vel rotundatis serratis (dentibus acutis) laeti- vel flaves- 
centi-viridibus— E. Rothrockii Gray, Syn. Fl. i. pt. 2, 102 (1884). 
Kyrstenia Rothrockii (Gray) Greene, Leafl. i. 9 (1903).— ARIZONA: 
Mt. Graham, alt. 2745 m., September, 1874, Dr. J. T. Rothrock, nos. 
740, 741; Pine Cafion, alt. 2440 m., 1 Oct., 1909, Blumer, no. 3434. 
AHUA: southwestern part of state, Aug—Nov. 1885, Palmer, 
no. 375; shaded ledges of the Sierra Madre, 8 Oct. 1887, Pringle, no. 
1265 (mixed with E. Lemmoni Robinson); mountain near Pilares, 
Strawberry Valley, 22 Sept. 1891, Hartman, no. 752; near Coloma 
Garcia, alt. 2250 m., 12 Sept. 1899, Townsend & Barber, no. 326. : 
Var. Shrevei, var. nov., foliis tenuioribus deltoideo-ovatis cordatis 
vel basi truncatis majoribus usque ad 1 dm. longis et 7 cm. latis grosse 
crenatis fuscescente viridibus; inflorescentia, involucris, flosculis ut 
apud var. typicum.— ArIzoNA: Ramsey Cafion, Huachuca Moun- 
tains, alt. 1680 m., 25 Sept. 1916, Dr. Forrest Shreve, no. 5017 (TYPE 
Gr.). Seemingly something more than a mere shade form, although : 
without any as yet detected floral differences. 
E. (§ Subimbricata) sciaphilum, spec. nov., fruticosum vagum 
24 m. longum molliter lignosum; ramis teretibus glabris purpur- 
ascenti-griseis ramulis fulvescenti-puberulis, pilis crispis; foliis 
oppositis spatulato-obovatis vel -oblanceolatis integerrimis utrinque 
glabris molliter coriaceis sessilibus vel brevissime petiolatis obtusis 
basi cuneatis 5-8 cm. longis 1.8-3.2 cm. latis, nervo medio supr 
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