594 CHENOPODIACE^ blitum 



MONOLEPIS 



and small green or reddish flowers in aggregated globose axillary 

 sessile heads, or the upper heads forming an interrupted spike. 

 Calyx 2-5-lobed, becoming pulpy and bright red in fruit. Sta- 

 mens 1-5. Pericarp separating from the vertical shining seed. 

 Embryo a complete ring around mealy albumen. 



B. capitatum L. Sp. 2. Glabrous or sparingly pubescent, succulent: 

 stem erect, ascending or prostrate, 6-24 inches high, commonly much 

 branched: leaves usually longer than wide, broadly triangular or hastate, 1-4 

 inches long, sinuate, or the upper ones and sometimes all of them entire, 

 rounded to cordate at base: flowers in globose sessile heads in the axils of the 

 upper leaves and on the sides of the upper part of the stem and branches, 2-3 

 lines in diameter in flower, becoming bright red and 5-8 lines in diameter in 

 fruit: seeds compressed, ovate, enclosed by the calyx or when mature slightly 

 exserted. Brit, Columbia to California and the Eastern States. 



5 MONOLEPIS Schrad. Ind. Sem. Gcett. iv. (1830.) 



Low annual branching herbs with alternate leaves and small 

 perfect or polygamous flowers in small axillary clusters without 

 bracts, calyx of a single persistent herbaceous sepal. Stamens 1. 

 Styles 2, filiform. Pericarp membranaceous, persistent upon the 

 vertical flattened seeds. Embryo annular around copious albu- 

 men, its radicle turned downward. 



M. chenopodioides Moq. in DC. Prodr. xiii, 85. Glabrous or some- 

 what mealy: stem erect, much branched from the base, 3-12 inches high: 

 leaves lanceolate, with 1 or 2 coarse teeth on each side, attenuate at base to 

 a petiole, the upper ones much smaller, and usually entire: flower- clusters 

 dense, often reddish: sepal fleshy-foliaceous, oblanceolate or spatulate, acute: 

 pericarp adherent to the seed, minutely pitted: seed half a line broad, the mar- 

 gin acute. In moist places, Washington to Calif orma and the Saskatchewan. 



M. spatulata Gray Proc. Am. Acad, viii, 386. Subpubescent or glab" 

 rous: stem decumbent or ascending, S-6 inches high with elongated leafy bran" 

 ches leaves narrowly spatulate, 6 lines long or less, acute entire: flowers 10-20' 

 in dense clusters: sepal spatulate obtuse: pericarp separating from the seed, 

 minutely papillose: seedless than 3^ line broad. Eastern Oregon to Mono 

 Pass, California, 



M. pusilla Torr. Watson Bot. King 284. Stem erect, dichotomously 

 much branched from the base 2-6 inches high, slender somewhat mealy, be- 

 coming glabrous often reddish: leaves oblong 3-6 lines long, obtuse, entire, 

 shortly petioled: clusters 1-2-flowerecl; sepal obtuse: pericarp adherent, min- 

 utely tuberculateJseeds less than % line broad, acute-margined. Alkaline 

 valleys, eastern Washington to Nevada. 



Tribe 2 Atriplicese Moq. in DC. Prodr. xiii, part 2, 89. Stems 

 not articulated nor leaves fleshy. Flowers monoecious or dioecious: 

 the staminate with S-5-cleft calyx; the pistillate without calyx, enclos- 

 ed in a pair of more or less united bracts. Seed free, vertical, with 

 annular embryo and copious albumen. 



6 ATRIPLEX L. Sp. 1052. 



Herbs or shrubs with alternate or rarely opposite leaves and 

 small greenish flowers in panicles or spikes or capitate-clustered 



