114 
BOTANY. 
filaments 15-30, subulate-filiform or occasionally somewhat dilated; capsules 
cylindric, narrow, elongated; seeds 20-40.—From Sonora and New Mexico 
to California, Utah and Colorado. Frequent in Nevada from the Washoe to 
the East Humboldt Mountains, and also found on Carrington Island, Salt 
Lake; 4,200-8,000 feet altitude; May-July. (428.) 
Yar. gracilenta. (M. gracilenta , T. & G.) Flowers usually somewhat 
capitate, 2-3 times larger, petals 2-4" long, deep yellow with an orange base ; 
stems simple or branched, erect and strict; leaves very variable, often linear- 
pinnatifid with numerous segments, or oblong- or ovate-lanceolate and more 
or less entire.—California and Southern Oregon, (Cronkhite.) It is 506 and 
575 Brewer, 165 Coulter, and M. Veatckiana, Kell. Frequent from the 
Washoe to the West Humboldt Mountains, Nevada; 5,000 feet altitude; 
May-July. (429.) 
Yar. INTEGRIFOLIA. Usually branched; leaves ovate, oblong or oblong- 
lanceolate, entire or sinuately toothed or pinnatifid; flowers and fruit as in the 
ordinary M. albicaulis , but the seeds rather few (6-20) and some of the 15-20 
filaments occasionally petaloid.—There seems very little to separate this from 
M. micrantha , H. & A., which has the same habit and foliage and is by no 
means .constant in having a 3-seeded capsule, having sometimes half-a-dozen 
or"'more seeds;” This is 663 Geyer, 571 Hall & Harbour, and 195 Yasey. 
East Humboldt Mountains, Nevada, and Antelope Island and the Wahsatch, 
Utah; 4,500-6,000 feet altitude ; June, July. (430.) 
Mentzelia congesta, Nutt. Stem 6-10' high, branching, pubescent, 
white.; leaves short, the lower linear-lanceolate, entire or pinnatifid, the 
upper ones clasping; bracts membranous, toothed, broadly ovate and em¬ 
bracing the sessile clusters of (3-5) flowers ; petals 2" in length, yellow, 
orange at base, a little longer than.the calyx; stamens about 20; capsules 
clavate-oblong, 12-20-seeded.—Rare ; collected only by Nuttall in Southern 
Idaho. Found on the foot-hills of the Toyabe Mountains, east of Austin, 
Nevada; 6,000 feet altitude; July. (431.) 
Mentzelia l^vicaulis, T. & G. Tall, 2-3 6 high, stout, branching; 
leaves lanceolate, sinuate-pinnatifid, sessile; flowers large and showy, termi¬ 
nating the branches and often somewhat crowded; bracteoles none, or few 
and subulate; petals 5 or rarely 10, 2' long, yellow, erect-spreading, lanceolate, 
acute, longer than the lanceolate acuminate sepals; stamens very many, the 
5 outer filaments dilated; seeds numerous, winged.—Mature capsule l'-l £' 
rvi Dojanical Garden 
George Engelmanh Papers 
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