230 Plants of Caltfornta. [ZOE 
dicecious: leaves nerveless, in fascicles of 3-8 covering the 
branches, obovate, attenuate at base, sparingly short-hirsute, 
4mm. long, 2-3 mm. wide: staminate flowers 4-5 from the leaf, 
bearing nodes on pedicels 5 mm. long: petals none; sepals 6, 
minute, the alternate ones reddish-colored: stamens 4-6, sur- 
rounding a central irregularly lobed disk, 2 mm. long: pistillate 
flowers nearly sessile; petals none; sepals similar to those of the 
staminate flower; ovary usually 3-celled, cells 2-ovuled; styles 
3-4, nearly distinct, recurved; immature capsule pubescent, 7 
mm. wide. No mature fruit seen. 
Collected by H. M. Hall and L. A. Greata at “ Chuckwalla 
Bench, midway between Cafion Springs and Chuckwalla Spring, 
Colorado Desert, Riverside County, California. It grows both 
on the mesa and along a small wash, but was not at all common.”’ 
No. 5865, H. M. Hall. 
The genus 7e/racoccus has hitherto consisted of a single species, 
based on specimens collected by Dr. Parry and C. R. Orcutt, near 
Santo Tomas, northern Lower California. Since then it has been 
collected by D. Cleveland, eight miles north of Table Mountain, 
near the U.S. boundary line, and by C. R. Orcutt, near Temecula 
and the line of Riverside County, California. ‘The new species is 
very distinct from the criginal one. 
rgithamnia Californica. - Annual, moncecious, glabrous 
throughout, erect, branching, 15 cm. high: leaves ovate-acumin- 
ate, attenuate at base into a petiole 5-7 mm. long, serrate, 2-3 
em. long, 10-12 mm. wide: staminate flowers 2-4 in short axil- 
lary racemes about as long as the petioles, on pedicels I mm. 
long; bracts linear, white-margined; sepals linear-lanceolate; 
petals ovate, acuminate, 2.5 mm. long; glands acuminate, I mm. 
long: stamens in two verticels from the column: pistillate flower 
on a pedicel 1 mm. long: sepals 4~5 mm. long, linear-lanceolate, 
white-margined, glandular-denticulate: petals acuminate; den- 
ticulate; capsule 4 mm. wide; styles united near the base and 
deeply bifid, not dilated above; seed apiculate, rugose-reticulated. 
Collected by H. M. Hall at Marshall Cajion, seven miles west Of 
Coachella; north base of El Toro Mountain, Colorado Desert, River- 
side County, California, where it iscommon. No. 5796, H. M. Hall. 
