108 Urticaceae 



ami shorter: inner sepals ovate, densely hispid, 1 nun. long, 

 about equaling the broadly ovate achene. 



Very common along streams and in low ground in the valleys and the 

 lower altitudes of the mountains. May-September. 



3. U. Breweri Wats. Much resembling the last, -ravish with 

 a short hispid pubescence or nearly glabrous and with scattered 

 bristles; petioles slender, 2.5-5 cm. long, about , l 2 the length of 

 the leaves; flower clusters rather open, scarcely exceeding the 

 petioles ; sepals obovate or somewhat rounded, obtuse, minutely 

 hispid, nearly 2 mm. long and about twice the length of the 

 broadly ovate achene. 



"Frequent about Los Angeles (/>*/> wer) and ranging eastward to southern 

 Colorado and western Texas." Bot. Cal. ft : 64. 1880. Not seen by us, nor has 

 it been by recent collectors. 



2. HESPEROCNIDE Torr. Western Nettle. 



Annual herbs distinguished from Qrtica by the pistil- 

 Late perianth, which is a membranous flattened oblong- 

 ovate sac, with a minutely 2 4-toothed orifice. 



1. H. tenella Torr. Slender and weak, 25-50 cm. high, simple 

 or branched, somewhat hispid with branching hairs and bristly; 

 leaves 1-:-} cm. long, thin, ovate, obtusely serrate; petioles slen- 

 der, )4 as long; flower clusters rather dense, nearly glomerate, 

 shorter than the petioles; calyx thin, hispid, with hooked hairs, 

 in fruit 1-1.5 mm. long; achene membranous, striately tubercu- 

 late with minutely rough points. 



Sepulveda Canyon, Santa Monica Mountains; San Pedo Hills; also near 

 San Diego and on Catalina Island. 



3. PARIETAFvIA L. 



Ours Blender annuals without stinging hairs. Leaves 

 alternate, entire, 3-nerved petioled, without stipules. 

 Flower- in axillary glomerate clusters, polygamous, sub- 

 tended by Leafy bracts. Calyx of the perfect (lowers 

 4-parted, in the pistillate tubular-ventricose, 4-cleft with 

 connivenl Lobes. Style slender or none ; stigma Bpatu- 

 late. recurved, densely tufted. Achene ovoid, smooth 



