BUCKWHEAT FAMILY 225 



85. E. bicolor M. E. Jones. Depressed undershrub, tufted, 1 dm. high or less; 

 leaves linear, revolute, 10-15 mm. long, about 2 mm. wide; inflorescence 1-3 cm. 

 long, sometimes subcapitate, with few involucres, which are turbinate, tomen- 

 tose, 3 mm. long; lobes rounded, scarious-margined; perianth 4 mm. long, cam- 

 panulate; outer lobes broadly obovate or suborbicular, the inner eUiptic. E. 

 Batemani and (?) E. friscanum M. E. Jones. Clayey hills: Utah. Son. My-Je. 



86. E. clavellatum Small. Undershrub, with a thick woody caudex and 

 thinly tomentose branches; leaves fleshy, strongly revolute, cylindric-clavate, 

 1-1.5 cm. long, glabrous without; involucres campanulate, 4 mm. long, rib- 

 angled, glabrate; lobes acute, erect; perianth 3.5 mm. long, urn-shaped; segments 

 saccate at the base, the outer fiddle-shaped, the inner linear-cuneate. Rocky 

 hills: se Utah. Son. Jl. 



87. E. sulcatum S. Wats. Low shrub, 2-3 dm. high, intricately branched, 

 with tomentose branches; leaves petioled; blades narrowly oblanceolate, 1 cm. 

 long or less, tomentose on both sides, less so above, rather thin; inflorescence 

 about 1 cm. long, its divaricate branches deeply sulcate, glabrate; involucres 

 sessile, 1-1.5 mm. long, glabrous. Dry hills: sw Utah— Nev. Son. Ap-My. 



88. E. annuum Nutt. Stem simple, leafy, 3-10 dm. high, floccose through- 

 out; leaves petioled; blades oblong or oblanceolate, obtuse, slightly revolute, 

 densely white-tomentose beneath, floccose above, 3-5 cm. long; mflorescence 

 cymose, flat-topped, somewhat irregularly branched; involucres turbinate, 2-3 

 mm. long, whitc-tomentose; teeth short, obtuse; perianth white or whitish, 1.5-2 

 mm. long, campanulate; lobes obovate. E, Hitchcockii Gand. Sandy places: 

 S.D. — Tex.— Mex. — Mont. SubmonL — Plain, Je-0. 



89. E. racemosum Nutt. Scapose perennial; scape more or less branched, 

 white-tomentose, 3-8 dm. high; leaves basal, long-petioled; blades ovate or oval, 

 densely w^hite-tomentose beneath, floccose above, 2-6 cm. long; involucres sessile, 

 3^ mm. long, white-tomentose; perianth pink or white, turbinate, 3 mm., but 

 accrescent, becoming 4-6 mm. long; lobes obovate. Dry plains and hills: Colo. 

 — Tex. — ^Ariz. — Utah. Son. — Submont. Jl-S. 



90. E. Wrightii Torr. Shrub or undershrub, 3-6 dm. high, with tomentose 

 short branches; leaves scattered, short-petioled or subsessile; blades white- 

 tomentose on both sides, 1-2 cm. long; inflorescence cymose, irregularly branched, 

 2-3 dm. long; involucres elongate-turbinate, 2-3 mm. long, tomentose; lobes 

 ovate or lanceolate, acute; perianth 3-4 mm. long; outer lobes suborbicular or 

 broadly oval; the inner oval or elliptic. Dry plains: Colo.— Tex. — Calif.; Mex. 

 Son. Je-N. 



91. E. leptocladon Torr, Shrubby; stems several, 3-8 dm. high, diffusely 

 branched, white-floccose; leaves short-petioled, 2^ cm. long, white-toraentose 

 on both sides; margin slightly revolute; inflorescence much branched, lower 

 nodes flowerless; involucres near the ends, sessile and secund, about 2 mm. long, 

 tomentose; perianth glabrous, campanulate, 2 mm. long; divisions broadly oval, 

 white, with rose-colored base. E, ramosissimum Eastw. E, Easiwoodiae M. 

 E. Jones. Sandy mesas: se Utah — nw N.M. Son. Jl-Au. 



92. E. vimineum Dougl. Branched annual; leaves basal, slender-pet ioled; 

 blades orbicular or subreniform, densely white-tomentose beneath, floccose 

 above, 1-2 cm. long; inflorescence 1-3 dm. high, slightly floccose when young, 

 soon glabrate; branches glabrous; involucres about 3 mm. long, glabrous; lobes 

 very short; perianth 1.5-2 mm. long, campanulate, glabrous, pmk or white. E. 

 shoshoneme A. Nels. Hills: Wash.— Ida.— Calif. Son. My-S. 



93. E, Baileyi S. Wats. Branched annual, 2-3 dm. high; leaves basal, 

 petioled; blades orbicular or broadly ovate, 1-2 cm. long, floccose-tomentose on 

 both sides; inflorescence glabrous and glaucous; involucres sessile, glabrous^, 

 oblong-campanulate; teeth obtuse; perianth glabrous, pinkish-white, l-l.o 

 nam. long; lobes obovate or spatulate. Dry hills: Wash.— Ida.— Ariz.— se 

 Cahf. Son. My-Au. 



94. E, densum Greene. DifiFusely branched annual, 1-2 dm. high; leaves 

 basal, petioled; blades ovate or oblong, about 1 cm. long, white-toraentose; 



11* 



