. Report of the geological exploration of the fortieth parallel . iffuselybranched; leaves simple or 3-foliolate; leaflets small, oblong, entire, shortlypetiolulate, mucronate, distant; stipules setaceous, scanty or wanting; floralbracts minute; flowers in loose racemes; sepals minute, distinct; petals oblong-lanceolate; filaments equal and nearly equaling the petals, the anthers a halfshorter: pod linear, 4-6 times longer than the stipe.—Stem 1° high, nearlynaked, with small (2-3 long) scattered leaves; flowers large, yellow; petals(3 long) with a broad claw and a large somewhat 2-lobed necta
. Report of the geological exploration of the fortieth parallel . iffuselybranched; leaves simple or 3-foliolate; leaflets small, oblong, entire, shortlypetiolulate, mucronate, distant; stipules setaceous, scanty or wanting; floralbracts minute; flowers in loose racemes; sepals minute, distinct; petals oblong-lanceolate; filaments equal and nearly equaling the petals, the anthers a halfshorter: pod linear, 4-6 times longer than the stipe.—Stem 1° high, nearlynaked, with small (2-3 long) scattered leaves; flowers large, yellow; petals(3 long) with a broad claw and a large somewhat 2-lobed nectariferous scaleon the inner base : siliques 1 in length. In Carson Desert, near Pagtown,Nevada. August. Plate V. Fig. 1. A small plant; natural size. Fig. 2and 3. A flower and petal ; enlarged four diameters. (133.) CLEOME, L. Sepals distinct or somewhat united. Stamens 6, ox rarely 4. Torus linear or oblong, subsessile or stipitate.—Annual herbs, or ^lirol>~. with digitate or simple leavesand racemed or solitary flowers. & II CATALOGUE. 33 Cleomella1 parviflora, Gray. Proc. Amer. Acad,, 6. 520. Slender,diffusely branched; leaflets and the simple bracts linear; flowers small, onelongated filiform pedicels; pod obovate-globosc, the stipe scarcely exceedingthe calyx, and the style very short; seeds smooth.—3-8 high, with very smallflowers, (the petals and equal stamens about J in length,) and with capsulesabout 1£ in diameter. Collected by Anderson near Carson City, and byCooper near Fort Mohave in Western Arizona. In wet subalkaline soilon Dry Creek, Monitor Valley, Nevada; July. (134.) Cleomella plocasperma. Low, h-\° high, slender, diffusely branched ;leaflets and the simple bracts linear-oblong; racemes many-flowered; flowerssmall, pale yellow, on filiform pedicels; stamens equaling the petals; podssomewhat 2-horned, shorter than the stipe ; style short; seeds oblong-ovate,mottled brown, tessellated under the microscope.—Very near the las
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