. Report of the geological exploration of the fortieth parallel . top; stems about 1° high, slender, herbaceous from a somewhat woodybase; leaves mostly alternate, on slender petioles, cordate-ovate or somewhatdeltoid, 1-14 long, more or less toothed, the upper ones often narrower; co-rymbs rather simple, panicled; heads 15-25-flowered; involucral scaleslinear-lanceolate, subequal, puberulent; corolla pale reddish-white; acheniaslender, glabrous or mty sparingly glandular.—Oregon, California and Ne- 1 PLECTRITIS, Llndl. Calyx-limb truncate, entire, almost none. Corolla-tube gibbous anteri-orly
. Report of the geological exploration of the fortieth parallel . top; stems about 1° high, slender, herbaceous from a somewhat woodybase; leaves mostly alternate, on slender petioles, cordate-ovate or somewhatdeltoid, 1-14 long, more or less toothed, the upper ones often narrower; co-rymbs rather simple, panicled; heads 15-25-flowered; involucral scaleslinear-lanceolate, subequal, puberulent; corolla pale reddish-white; acheniaslender, glabrous or mty sparingly glandular.—Oregon, California and Ne- 1 PLECTRITIS, Llndl. Calyx-limb truncate, entire, almost none. Corolla-tube gibbous anteri-orly, spurred at base; limb 5-cleft, more or less bilabiate. Stamens 3. Stigma capitate. Fruit with asomewhat coriaceous triangular fertile cell; the two empty ones open to the base forming involutewings.—Annual glabrous herbs, with simple or sparingly branched stems; leaves entire, oblong or obo-vate-spatulate, sessile ; flowers rose-color, aggregated in dense verticillate clusters or capitate; bracts sub-ulate, verticillate and involucellate, united at CATALOGUE. 137 vada. Foot-hills and high canons of the East and West Humboldt Mount-ains ; 6,500-8,500 feet altitude; the more elevated station (East HumboldtMountains) furnishing dwarfed plants 8 high with smaller leaves; Septem-ber. (491.) Brickellia1 oblongifolia, Nutt. Viscidly puberulent; steins 6-12high, several from a suffrutescent base; leaves numerous, alternate, sessile,elliptical-oblong, entire, 3-nerved, 8-12 long; heads large, solitary or few,terminating short leafy branches ; involucral scales imbricated in 3 or 4 series,outer ones ovate-oblong, inner ones lance-linear, acute; flowers about 30;branches of the style somewhat exserted ; achenia minutely glandular or ob-scurely setulose along the striae ; pappus slightly plumose, exceeding the invo-lucre, but shorter than the corolla.—British Columbia (Lyall!) and excellent figure is given on Plate IX of Torreys unpublished report onthe Western No
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