Revision of some Polypetalous Genera and Orders: Horsfordia

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HORSFORDIA, Nov. Gen. inter Sphæralceam et Abutilon. Calyx basi nodus. Carpella 8-12, coalita, tarde secedentia, 3-ovulata, 1–3-sperma (ovulis 2 superioribus sæpe abortientibus, infimo resupinato-pendulo), matura difformia; pars superior sæpius vacua mox accrescens, membranaceo-scariosa, et bipartita in alas 2 parte infime firmiore grosse reticulata (modo Sphæralcearum plurimarum) 2–3-plo longior. Discus sub fructi vix ullus. Semen Abutili. — Frutices vel herbæ frutescentes, Crotoniformes, tomento albido stellulato denso scaberulo; foliis ovato-cordatis oblongisque; pedunculis axillaribus unifloris.

H. ALATA. Frutescens; petalis purpureis roseisve semipollicaribus calyce triplo longioribus; carpellis 10-12 monospermis (ovulis 2 superioribus abortivis); parte superiori vacua ante maturitatem bipartita et in alas 2 angusto-oblongas erectas scariosas parte seminifera reticulata triplo longiores mutata. — Sida alata, Watson, Proc. Am. Acad. xx. 356. N. W. Sonora, about 100 miles below the U. S. boundary, Pringle. — It is most proper that one of the new plants which Mr. Pringle collected at much risk of life, in the northwestern corner of Sonora, should commemorate his able associate in practical botanical labors, Frederick Hinsdale Horsford, of Charlotte, Vermont. Having a second species to add, I may perhaps take leave to join the name of my own former associate, Eben N. Horsford, of Cambridge, the well know chemist, whose services and gifts to the scientific department of Wellesley College will more readily immortalize his memory. The second species is

H. NEWBERRYI. Fruticsoa; petalis (ut dicitur) læte flavis dimidio minoribus; carpels 8–9, di–trispermis, parte superiori scarioso-membranacea breviore latiore subdivergente; foliis inferioribus magis cordatis. — Sphaeralcea crotonoides, Torr. in herb. Abutilon Newberryi, Watson, Proc. Am. Acad. xi. 125, & Bot. Calif. i. 87. — Arizona, on the Gila, &c, Emory, Newberry, Parry, and adjacent borders of California. Parish: also adjacent parts of Sonora, Mexico, Pringle. and of Lower California, Palmer, Orcutt.

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