SALTBUSH FAMILY 433 



5. ROUBIEVA Moq. 



Heavy-scented herb, with prostrate branches. Leaves alternate, deeply pin- 

 natifid. Flowers minute, perfect or pistillate, solitary or 2 or 3 together in 

 the axils; calyx deeply bowl-shaped, 3 to 5-toothed, becoming saccate and 

 contracted at the top, enclosing the fruit. Stamens 5, included. Ovary glan- 

 dular at the top ; styles 3, somewhat lateral, exserted. Pericarp of the achene 

 membranous, glandular- dotted, thin and deciduous; seed lenticular; embryo 

 annular. One species, South America. (G. J. Roubieu, French botanist.) 



1. R. multifida Moq. Branches 1 to 2 feet long; leaves i/ 2 to 1*4 inches 

 long; calyx in fruit obovate, very conspicuously reticulate-veined. 



Native of Peru; abundant on the San Francisco sand hills, and in waste 

 places eastward to the Great Valley. 



Eefs. ROUBIEVA MULTIFIDA Moq. Ann. Sc. Nat. ser. 2, 1: 293, t. 10, fig. b (1834). 

 Chenopodium multifidum L. Sp. PI. 220 (1753). 



6. MONOLEPIS Schrad. 



Low annuals with alternate fleshy leaves. Flowers polygamous, clustered 

 in the upper axils. Sepal 1, entire, bract-like, persistent. Stamen 1. Styles 

 2. filiform. Achene with thin pericarp. Embryo annular around copious 

 endosperm. Species 3 ; western North America. (Greek monos, one, and 

 lepis, scale, referring to the solitary sepal.) 



Pericarp minutely pitted, adherent to the seed 1. M. nuttalliana. 



Pericarp minutely papillose, separating from the seed 2. M. spathulata. 



1. M. nuttalliana Greene. Pale green, branched at the base, the many 

 stems 5 to 10 inches high; leaves linear or lanceolate with a salient tooth on 

 each side near the middle, % to 1 (or 1^/2) inches long, shortly petioled or the 

 lower petioles elongated; flower clusters dense, often reddish; sepal fleshy, 

 foliaceous. often much exceeding the achene; pericarp minutely pitted, y 2 

 line broad. 



Alkaline soil, occasional but w r idely distributed: Southern California to 

 the Sacramento Valley and northern Sierra Nevada; east to the Great Plains. 

 Apr.-May. 



Locs. Hat Creek, Shasta Co., Hall 4264; Dixie Mts., Lassen Co., Baker $ Nutting; Mt. 

 Ralston, Hall 4678; Donner Lake, Heller 6880; Cisco, H. A. Walker 1474; Alpine Co., Hansen; 

 Leavitt Meadow, Cong Aon; Glenn Co., Davy; San Carlos Range, Jepson 2739; Bakersfield, 

 Davy 2140; San Emigdio Canon, Davy 2000; Menifee, Alice King; Riverside, Hall 5750; 

 Colorado Desert, Brandegee; Capistrano, Abrams 3267. 



Refs. MONOLEPIS NUTTALLIANA Greene, Fl. Fr. 168 (1891). Blitum nuttallianum R. & S. 

 Mant. 1: 65 (1822). B. chenopodioides Nutt. Gen. 1: 4 (1818), type loc. arid soils near the 

 Missouri River. Monolepis chenopodioides Moq. in DC. Prodr. 13 2 : 85 (1849) ; Wats. Bot. Cal. 

 2: 49 (1880). 



2. M. spathulata Gray. Habit of the last ; leaves oblanceolate or spatulate, 

 entire, 1/2 to 1 inch long; sepal rarely exceeding the achene. 



Northern Sierra Nevada from Sierra Co. (ace. Bot. Cal.) to Leavitt Meadow 

 and Mono Pass; Pananiint Mts. ace. Coville. 



Refs. MONOLEPIS SPATHULATA Gray, Proe. Am. Acad. 7: 389 (1868), type loc. Mono 

 Pass; Wats. Bot. Cal. 2: 49 (1880); Cov. Contrib. U. S. Nat. Herb. 4: 179 (1893). 



7. ATRIPLEX L. SALTBUSH. 



Herbs or shrubs, usually mealy or scurfy with bran-like scales. Leaves al- 

 ternate or opposite. Flowers monoecious or dioecious, in axillary clusters, 

 or in simple or panicled spikes ; staminate flowers with a regular 4 or 5-parted 

 calyx, the pistillate consisting of a pistil enclosed between a pair of appressed 

 foliaceous bracts, without calyx. Stigmas 2. Bracts either free or united, 

 much enlarged in fruit, the margin usually becoming more or less expanded 

 or foliaceous and the sides thickened, indurated, muricate or variously ap- 



