114 PROCEEDINGS OP THE AMERICAN ACADEMY 



22. A. CRiSTATA, HBK. Slender, decumbent or ascending, 1-1^ 

 feet high, branching, leafy ; leaves oblanceolate to obovate, ^1 inch 

 long, usually obtuse, mucronulate and undulate, sinuate-dentate or the 

 upper entire ; flowers axillary or the male often in naked slender 

 terminal spikes; fruiting bracts 1^ lines long, mai'gined nearly to the 

 base, the terminal tooth most prominent, with three smaller on each 

 side; styles very short, included. — Tropical America and the West 

 Indies ; Key AVest, collected only by Blodgett. Said to be perennial 

 and sometimes becoming woody at base, but the F'loridan specimens 

 appear to be annual. 



Atriplex cristata. HBK., Nov. Gen. & Sp. 2. 192. 



Obione cristata. Moquin, Enum. Clienop. 73 ; DC. Prodr. 13^. 110. Chapman, 

 377. 



§ 6. Fruiting bracts united, orbicular, compressed, indurated, li— 2^ 

 lines broad, surrounded by a double herbaceous toothed margin, 

 the sides carinate, usually not appendaged : flowers mostly axillary : 

 leaves narrow, an inch long or less. 



* Apex of fruiting bracts not foliaceous. 



23. A. ELEGANS, Dietrich. Erect, slender, i— 1 foot high, branching, 

 leafy ; leaves oblanceolate to linear, 6-9 lines long, obtuse or acute, 

 entire or with a few teeth near the apex ; fruiting bracts 1;^ lines 

 broad, very shortly pedicelled, the margins sharply and radiately 

 toothed, the sides more or less prominently carinate, not appendaged. 

 — New Mexico and Aiuzona to Northern Mexico. 



Obione elegans. Moquin, DC. Prodr. IB'^. 118. 



Atriplex elegans. Dietrich, Syn. 5. 537. 



Obione radiata. Torrey, Bot. Mex. Bound. 183. 



Obione elegans, var. (?) radiata. Torrey, Bot. Mex. Bound. 183, in part. 



Collectors : — 1375 Coulter; 571 Wright; 715 Thurber; 219 Palmer. 



24. A. CORONATA. Stout, becoming woody at base, erect, 1-2 feet 

 high, branched, leafy, hoary-farinose ; leaves lanceolate, i- 1 inch long, 

 attenuate to the base or to a short petiole, acute, entire ; flowers minute ; 

 calyx 5-cleft ; fruiting bracts 2-2^ lines long, the margins gash-toothed, 

 the sides rarely slightly tuberculate. — San Joaquin Valley, California, 

 in alkaline soil (1189 Bi-ewer), and near Fort Mojave (Cooper). 



** Fruit 1-2 lines long, with a foliaceous acuminate apex and the 

 sides tooth-crested : leaves lanceolate, entire or subdenticulate. 



25. A. PowELLii. Erect, slender, 1-2 feet high, branched, leafy, 

 grayish; leaves ^-1 inch long, acuminate, attenuate to a short petiole, 



