OF ARTS AND SCIENCES. 367 



John A. Veatch in 1859, and again by L. Belding in 1881. It was 

 described by Dr. Kellogg from Veatch's specimens as (Eaothera arho- 

 rea (Proc. Calif. Acad. 2. 32), and figured by him under that name in 

 the " Hesperian." The seeds are described by him as " appcndicu- 

 late"; the well-developed ovules are conspicuously winged at the upper 

 end. It is a strongly marked species in this Mexican and Guatemalan 

 genus, the three other species of which are described and figured by 

 Ilemsley, in Biol. Ceut.-Amer., Bot. 1. 462, t. 29. 



Mentzelia (Bartonia) Brandegei. Stem branching, a foot 

 high : leaves linear, pinnatifid with narrow lobes, 1 to 3 inches long ; 

 the bracts on the short pedicels mostly entire, very narrow : flowers 

 in open corymbs : calyx-lobes G to 8 lines long, the five narrowly oblan- 

 ceolate petals an inch long or more: stamens about 30, a little shorter, 

 none petaloid : capsule narrowly oblong (7 to 9 lines long by nearly 

 3 lines wide) : seeds horizontal, flattened, with somewhat angular or 

 rugose sides and narrow scarcely winged margin. — Near the Simcoe 

 Mountains, "Washington Territory, on the mesa bordering Satas Creek; 

 collected by T. S. Brandegee in 1883. Allied to M. Wrightii, M. pu- 

 mila., etc. 



Mentzelia (Bicuspidaria) involucrata. Annual, branching 

 from the base, stout, a foot high or less, white-caulescent : leaves 

 coarsely sinuate-dentate, linear- to oblong-lanceolate, the lower attenu- 

 ate to a short petiole, the rest sessile and mostly cordate-amplexicaul at 

 base : flowers terminal, solitarj^ and sessile, involucrate with a pair of 

 very broadly ovate acute or acuminate scarious bracts, the green mar- 

 gin coarsely toothed : petals pale yellow, an inch long, oblanceolate and 

 cuspidately acuminate ; stamens very numerous and slender, 3 to 6 

 lines lon<r, the oviter dilated above and continued into a loner linear 

 cusp on each side of the anther: style tubular, equalling the longer 

 stamens, with three flattened stigmatic lobes at the summit : capsule 

 about 9 lines long by 3 or 4 broad at the top, dehiscing by three apical 

 valves : seeds in one row on each thin placenta, horizontally flattened 

 but not margined, irregularly rugose and very minutely and densely 

 tuberculate. — In San Bernardino County, California, by C. C. Parry 

 in 187G; near Wickenburg, Arizona, by Dr. E. Palmer (n. 598 of his 

 187G collection, distributed as j\f. tricuspis), and at Yucca, by M. E. 

 Jones; and in Northwestern Sonora, by C. G. Pringlo in 1884. Re- 

 sembling M. tricuspis and M. hirsutissima, with which it forms a sec- 

 tion (j5('c2/sp/c?a?-m), distinguished especially by the bicuspidate outer 

 filaments, etc., as has already been indicated under the latter species in 

 Proc. Amer. Acad. 12. 252. 



