72 PROCEEDINGS OP THE AMERICAN ACADEMY 



Iresine alternifolia. a slirub, 6 feet high, the young branches 

 finely white-tomentose : leaves often or mostly alternate, thin, ovate 

 or sometimes oblong-ovate, obtuse or acute, truncate or cuneate at 

 base, tomentulose beneath, nearly glabrous or glabrate above, an inch 

 long or less: flowers dioecious, in mostly broad rather open and nearly 

 sessile panicles 2 to 4 inches long, scattered or subapproximate along 

 the ultimate branches, § line long, the staminate pubescent, with very 

 short bracts, the pistillate with smooth and shining bracts. — In the 

 mountains about Guaymas. (276.) 



Chenopodium album, Linn. Guaymas. (72, 73.) 



Chenopodium ambrosioides, Linn. "Hipasote"; Guaymas. 

 (171.) 



Beta vulgaris, Linn. "Acelga"; Guaymas, in old gardens. 

 (115.) 



Atriplex elegans, Dietr. Upright, 3 feet high. Guaymas. 

 (117, 122.) 



Atriplex Barclayi, Dietr. Though varying somewhat in habit, 

 as well as in fruit, the specimens are apparently all to be referred to 

 one species, which is very probably the same as the little known A. 

 Barclayi from Magdalena Bay on the Pacific side of the peninsula. 

 The specimens from about the gardens at Guaymas are noted as 

 growing 2 or 3 feet high. Those from the beach and islands of the 

 harbor are low, and evidently sometimes perennial. (118, 119, 670, 

 677, pistillate ; 123, 673, 674, staminate.) 



Atriplex linearis. Dioecious, woody at base, 1 to 8 feet high, 

 much branched, the branches slender : leaves canescent, narrowly 

 linear, -g- to 2 inches long, attenuate to the base : staminate flowers in 

 mostly small globose clusters in slender spikes bracteate below ; pistil- 

 late flowers in similar spikes, sessile or shortly i:)edicel]ate, solitary or 

 somewhat clustered, the bracts 2 or 3 lines long in fruit, lanceolate 

 with broad free and more or less spreading tips, the sides irreg'ularly 

 tuberculate and developing 4 broad wings, which are more or less 

 deeply toothed or lacerate. — Near forms of A. canescens, which, is 

 very variable in its fruit but appears never to have the tips of the 

 bracts so large and conspicuous. In alkaline soil about Guaymas. 

 (120, 121, 235.) 



SujEda Torretana, Watson. Very common on sea beaches and 

 in alkaline soil, in large bunches 2 to 6 feet high. The ashes are 

 used in soap-making. Muleje and Guaymas. (13, 329.) 



Spirostachys occidentalis, Watson. Sea-beach at Guaymas, 

 (330.) 



