The May-bush or Service.
Pyrus Botryapium, Willd. Sp. Pl. vol. ii. p. 1013. Pursh, Flor. Amer. vol. i. p. 339. Icosandria Pentagynia, Linn. Rosaceæ, Juss.
This species is distinguished by its ovate, acuminate leaves, racemose flowers, linear-lanceolate petals, pubescent germens, and smooth calycine segments.