102 PROCEEDINGS OF THE AMERICAN ACADEMY 



11. MONOLEPIS, Schracl. 



Flowers polygamous, bractless, the calyx of a single persistent 

 scalelike or foliaceous sepal, not appendaged. Stamen 1, with didy- 

 mous anther-cells. Styles 2, filiform. . Utricle compressed, persistent 

 upon the vertical flattened seed. Embryo surrounding the albumen; 

 radicle inferior. — Low annual herbs, with petioled leaves, and flowers 

 in axillary clusters. 



1. M. CHENOPODiOiDES, Moquin. Glabi'ous or somewhat mealy; 

 stems ascending, much branched from the base, 3-12 inches high ; 

 leaves lanceolate-hastate, 1-3 inches long, acute or acuminate, attenuate 

 at base and the lateral lobes acute, sparingly sinuate-dentate or entire, 

 the upper leaves mucli smaller, ^ inch long or less ; flower-clusters 

 dense, often reddish ; sepal fleshy and foliaceous, oblanceolate or spatu- 

 late, acute ; pericarp adherent, minutely subreticulately pitted ; seed 

 ^ line broad, the margin acutish. — From the Saskatchewan to New 

 Mexico, Arizona, and Northeastern California. 



BUtum chenopodioicks. Nuttall, Genera, 1. 4. James, Catalogue, 172. 



Torrey, Ann. N.Y. Lye. 2. 240. Hook. Fl. Bor.-Am. 2. 126. 

 Blitiim Nuttallianum. Roem. & Schult. Mant. 1. 65. Moquin, Enum. 



Chenop. 45. 

 Monolepis Nattalliana. Engelm. PI. Upp. Miss. 206. Bourgeau, Palliser's 



Rep. 260. Gray, Proc. Phil. Acad., 18G3, 75. 

 Monolepis c/ienopodloides. Moquin, DC. Prodr. 13'-. 85. Engelm. PI. Upp. 



Miss. 206. Watson, King's Rep. 5. 288. Porter, Hayden's Rep., 1871, 



492; Fl. Col. 117. Coulter, Hayden's Rep., 1872, 779. 

 M. chenopodioides, var. tiijida. Torrey, Ives's Rep. 25; not Moq. 



Collectors: — Ricliardsun ; Nicollet; 477 Fremont ; Newberry; Bourgeau; 

 54 Palmer ; Torrey ; 486 Hall & Harbour ; 491 Vasey ; 979 Watson ; 

 Hayden ; 340 Greene ; Bolander & Kellogg. 



2. ]M. SPATHULATA, Gray. Decumbent or ascending, 3-6 inches 

 high, with elongated leafy branches, subpuberulent or glabrous ; leaves 

 narrowly spatulate, ^ inch long or less, acute, entire ; clusters dense, 

 10-20 flowered; sepal spatulate, obtuse; pericarp separating from the 

 seed, minutely papillose ; seed less than i line broad. — Mono Pass, 

 California (6373 Bolander), and by Kellogg, but locality not given. 



Monolepis spathidata. Gray, Proc. Am. Acad. 8. 389. Watson, King's 

 Rep. 5. 289. 



3. M. pusiLLA, Torrey. Erect, dichotomously much branched from 

 the base, 2-6 inches high, slender, somewhat mealy becoming glabrous, 

 often reddish; leaves oblong, 3-6 lines long, obtuse, entire, shortly 



