604 EUPHORBIACEZ EREMOCARPUS 
EUPHORBBIA 
1 Eremocarpus Flowers not involucrate: staminate flowers with a 5-6- 
parted calyx; pistillate without: capsule 1-celled and 1-seeded. 
2 Euphorbia Flowers all without or with only a rudimentary calyx, 
subtended by a calyx-like involucre: capsule 3-celled. 
1 EREMOCARPUS Benth. Bot. Sulph. 53, t. 20. 
Low heavy-scented annuals with alternate entire petioled leaves 
without stipules and small flowers in axillary clusters without an 
involucre. Calyx of the staminate flowers 5- or 6-parted, slightly 
imbricated. Stamens 6 or 7, central on the hairy receptacle; 
filaments exserted: anthers inflexedin the bud Pistillate flowers 
without calyx. Ovary with 4 or 5 glands at the base, 1-celled, 
l-ovuled. Style simple, filiform, stigmatic at the apex. Capsule 
2-valved. Seeds smooth and shining. Cotyledons broad, cor- 
date, as long as the radicle. 
E. setigerus Benth.1.c. Hoary throughout with a very dense stellate 
nubescence and hispid with stiff spreading hairs: stem stout, dichotomous- 
branched from the base, the branches mostly procumbent or ascending, 
4-12 inches long: leaves thick ovate, obtuse, cuneate or rounded at base, 
1g-2 inches long, on long petioles, the upper crowded and apparently op- 
posite or ternate: staminate flowers pedicelled: calyx with oblong obtuse 
segments a line long: pistillate flowers in the lower axils, 1-3 together: 
ovary and style densely pubescent: capsule obovate-oblong. 2 lines 1 ong, 
smooth and shining, filled by the seed. In dry valleys, eastern Washing- 
ton to California. 
2 EUPHORBIA L. Sp. 450. 
Herbs or shrubs with alternate, opposite or verticillate leaves 
and usually small monoecious flowers without floral envelopes but 
subtended by a top-shaped or campanulateinvolucre. Staminate 
flowers numerous, of a single naked stamen jointed upon a short 
pedicel which has usually a minute bract at base: anther-cells 
globose, distinct: pistillate flowers solitary in the center of the 
involucre, pedicellate and soon exserted, Ovary 3-celled and 3- 
ovuled: styles 3, usually 2-cleft. Cotyledons linear or ovate. 
E. serpyllifolia Pers. Svn. ii, 14. Glabrous dark green or reddish 
annual: stem branched from the base, the slender branches prostrate or 
ascending, 2-15 inches long: leaves oblong to spatulate, 1-6 inches long, 
obtuse or retuse, nearly entire or serrulate to below the middle, short- 
petioled. the base oblique, mostly truncate or obtuse: stipules at length a 
fringe of weak setae: involucres solitary in the axils, sometimes clustered 
toward the ends of the branchlets, less than a line long, bearing 4 disk-like 
glands, each subtended by a narrow lobed appendage: capsule a line broad, 
slightly nodding: seeds ovoid, 4-angled, the face transversely wrinkled and 
pitted. Indry soil Washington to California‘and » isconsin. 
Var. consanguinea Boiss. Branches eréct: leaves with an obtuse 
sharply serrate apex: lobes of the involucres lacerate: seeds darker and 
more nearly ovate, less sharp on the angles. Range of the type. 
E. Greenei Millsp Pitt. ii, 88. Glabrous annual, radiately branched 
from the base, the branches prostrate and divaricately much branched, 5- 
6 inches long: stipules triangular at base, lacerate, leaves ovate, entire, 
oblique, mucronulate: involucres solitary in the axils, on peduncles twice 
