Carex crinita Lamarck.

C. C. Mellor. Swamp near P. & L. E. R. R., Robinson Township, June 21, 1889.

Carex laxiflora patulifolia (Dewey) Carey.

South Fayette Township, near Hastings, Rev. S. W. Knight, May 15, 1900.

Carex lupulina Muhlenberg.

Not uncommon.

Carex pennsylvanica Lamarck.

A common spring-flowering, hillside species.

Carex scoparia Schkuhr.

Brushton, P. R. R., C. C. Mellor, June 18, 1889.

Carex torta Boott.

Squaw Run, J. A. Shafer, April 27, 1884.

Cyperus strigosus Linnæus.

Haight's Run, Pittsburgh, J. A. Shafer, May, 1883.

Salix alba Linnæus.

Coleman's Run, Pittsburgh, Gustave Guttenberg, May 3, 1885, Originally from Europe, but is apparently becoming locally naturalized.

Salix cordata Muhlenberg.

Not uncommon.

Salix fragilis Linnæus.

Salt-works, Twenty-third Ward, Pittsburgh, Gustave Guttenberg, May 11, 1895.

Fumaria officinalis Linnæus.

Adventive from Europe.

Arabis glabra (Linnæus) Bernhardi.

Ross Station, O'Hara Township, C. C. Mellor, July 16, 1885. Fragaria virginiana Duchesne.

Not uncommon.

Lespedeza procumbens Michaux.

Not uncommon.

Meibomia canadensis (Linnæus) Kuntze.

Six-Mile Island, O'Hara Township, S. N. Rhoades, August 9,

Trifolium procumbens Linnæus.

Riverview Park, Allegheny City, Grace E. Kinzer, September,

1902.

Oxalis cymosa Small.

Apparently not uncommon.

Hypericum ascyron Linnæus.

Logan's Ferry, Rev. S. Knipe, July 16, 1869.

Helianthemum canadense (Linnaeus) Michaux.

Ross Station, W. P. R. R., Rev. S. W. Knipe, July, 1869.

Viola cucullata Aiton.

Occasional in moist situations.

Viola hastata Michaux.

Phlox paniculata Linnæus.

Rather common.

Escaped from cultivation.

Mentha arvensis Linnæus.

Bank of the Allegheny River below Sharpsburg, Dr. A. Ziegler, August 26, 1889.

Physalis heterophylla Nees.

Allegheny Cemetery, Pittsburgh, J. A. Shafer, August 31, 1884.

Physalis pubescens Linnæus.

Pittsburgh, Rev. S. W. Knipe, September, 1869.

Galium aparine Linnæus.

Powers Run, O. E. Jennings, May 25, 1904.

Galium concinnum Torrey & Gray.

Low woods near Stoops Ferry, J. A. Shafer, June, 1889.

Galium triflorum Michaux.

Roadside near Sheridan, Dr. Adolph Koenig, August 10, 1897.

Nabalus trifoliatus Cassini.

Not uncommon.

Taraxacum erythrospermum Andrzejowski.

Common everywhere.

Species from Allegheny County in the Pennsylvania Herbarium of the Carnegie Museum and so reported in the "Preliminary List," but which are found to have been identified incorrectly:

Physalis virginiana intermedia Rydberg.

Edgewood, C. C. Mellor. Not P. philadelphica Lamarck as reported in the "Preliminary List."

Ilysanthes attenuata (Muhlenberg) Small.

The several Allegheny County specimens in the Pennsylvania Herbarium are evidently of this species and not lysanthes dubia (Linnæus) Barnhart (I. gratioloides Bentham) as reported.

Lactuca virosa Linnæus.

This is the common 66

Compass Plant" of vacant lots, cultivated

fields, etc., and not Lactuca scariola Linnæus, as reported and as generally mistaken by American botanists a few years ago.

CARNEGIE MUSEUM,

November 24, 1905.

A

XV. A NEW SPECIES OF KNEIFFIA.

BY OTTO E. JENNINGS.

Kneiffia sumstinei n. sp.

Sumstine's Sundrops.

Stems simple, somewhat shrubby, about 3.5 dm. high, ascending from the base, or nearly erect, densely hairy above, with very widely spreading, or mainly reflexed, stiff, silvery hairs, 2-3 mm. in length. Leaves entire, 3-6 cm. long, .5-1.2 cm. wide, stiff and ascending, the lower slightly hairy, linear-obovate, rounded at the apex, at the base narrowed into a margined petiole from the attachment of which striations run down the stem. Upper leaves becoming lanceolate or ovate-acuminate, sessile, very densely hairy on both sides, with widely spreading, or reflexed, silvery hairs 1-1.5 mm. long. Flowers 8-12, diurnal, bright yellow, erect in the bud, in the axils of bracts as large as the upper leaves and similar to them, aggregated into a rather dense corymbose inflorescence; calyx-tube linear-funnel-form, prolonged 1-1.4 cm. beyond the ovary, sparsely pubescent, calyx segments reflexed in flower, lanceolate, about as long as the tube, tips linear, 2-3 mm. long, erect, or ascending from widely diverging bases, the tips and the upper fourth of the calyx-segments tomentose-pubescent ; petals obcordate, 2.2-2.5 cm. long, 2 cm. wide; stamens of equal length, or very nearly so, about two thirds the length of the petals; style slightly longer than the stamens, the lobes of the stigma linear, widely spreading, 4-6 mm. long. Mature capsule not seen; ovary sessile, oblong to slightly obovate, faintly winged, densely pubescent with ascending hairs. Dry upland field near Kittanning, D. R. Sumstine, June, 1905. Type specimens in the Pennsylvania Herbarium of the Carnegie Museum. Acc. No. 2905.

This species is evidently nearly related to Kneiffia fruticosa (Linnæus) Raimann, perhaps more closely to Kneiffia fruticosa pilosella (Rafinesque-Schmaltz) Britton, but in general appearance it is quite different, the strictly simple habit, the large leafy bracts, and the more densely aggregated inflorescence serving to differentiate it at Further differences are apparent in the mostly reflexed, silvery

once.

pubescence, and the widely diverging, tomentose-pubescent calyx tips. In the dried specimens at least, there is no discernible inequality in the length of the stamens, the species thus apparently overstepping what is usually regarded as a generic character. Prof. D. R. Sumstine, by whom the specimens were collected, reported the species as growing very abundantly in a field on a hill-top near Kittanning and in September last the writer, hoping to secure mature capsules, made a diligent but unsuccessful search in the locality indicated, but it was found that the field had been mowed and all weeds destroyed. It is hoped that in another year mature fruit may be collected and studied. In Plate XIX. are shown a figure of the plant one half natural size, and figures of the unopened bud and of the flower with the petals re