118 Polygonaceae 



oblanceolate, revolute, tomentose beneath, glabrate above, 6-18 

 nun. long, much fascicled ; peduncles short or elongated, bearing 

 a short cymosely divided umbel; bracts rather conspicuous; 

 involucres about 4 mm. high, glabrate; flowers rose-colored or 

 whitish, glabrous or somewhat villous. 

 Very common on the plains and in the foothills. 



■*-•*- Involucres solitary, often seciuid along the virgate branches. 

 ** Perennials, white -tomentose ; panicle sparingly branched and 

 virgate. 



7. E. saxatile Wats. Caudex densely leafy, sparingly branch- 

 ed ; leaves rounded or obovate, obtuse, 12-16 mm. broad, cuneate 

 at base, densely tomentose on both sides ; petioles short and 

 thick; branches of the cymose panicle 1-2 dm. long, spreading; 

 bracts subfoliaceous, triangular; involucres 3-4 mm. long, teeth 

 acute; perianth rose color, 2-3 mm. long, the lobes appressed to 

 the nearly glabrous achene, this abruptly narrowed at base. 



Frequent in the higher altitudes of the San Gabriel and San Bernardino 

 Mountains. 



8. E. Wrightii Torr. Much branched, leafy at base, 2-5 dm. 

 high, rather slender; leaves oblong-ovate, 15-25 mm. long, acute, 

 narrowed at base to a 4-8 mm. long petiole; bracts all small, 

 triangular; involucres loosely spicate along the ascending 

 branches, 3 mm. high, the teeth rigid, acute ; perianth rose color, 

 3 mm. long; achene scabrous on the angles above, these acute at 

 base. 



Frequent in the San Gabriel Mountains in the pine belt. 



9. E. Bloomeri Parish. Caudex as in the last ; leaves dense- 

 ly white-tomentose or somewhat brownish, oval, ovate or obo- 

 vate; scapiform peduncles numerous, 2-4 dm. high, erect, repeat- 

 edly branched; lower bracts foliaceous; involucres distant, 4 

 miii. high; the teeth subacute, few-flowered; perianth 8 mm. 

 high, attenuate at base, glabrous, yellowish; filaments hairy at 

 base ; achene glabrous, attenuate above. 



Frequent in the pine belt of the San Gabriel and San Bernardino Moun- 

 tains. 



10. E. elongatum Iienth. Stems erect, rather slender, from 

 a sparingly branched base; leaves usually somewhat scattered, 

 oblong-lanceolate, 2-3 cm. long, acute, narrowed t<> a short peti- 

 ole, becoming glabrate above ; bracts ovate-triangular to lanceo- 



