The difference between catalpa bungeana and Toona sinensis

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Catalpa, a catalpa plant, is15m high. Crown umbrella-shaped, straight trunk, opposite leaves, sometimes whorled, broadly ovate, nearly equal in length and width, tapering at the top, heart-shaped at the base, whole or shallowly wavy, rough upper and lower leaves, slightly pilose, and long petiole. Panicle terminal; Calyx buds are spherical, corolla bell-shaped, pale yellow, filaments are inserted on corolla tube, and anthers are bifurcated; Style filiform, capsule linear, drooping, oval seeds, long hair at both ends.

Toona sinensis, plant name. Latin scientific name: Ailanthus altissima (mill. )Swingle。 It is a deciduous tree of Sapindaceae, with dry gray bark and smooth or slightly longitudinal crown. Drought and salt tolerance, distributed in most parts of China.

Deciduous tree, up to 30 meters high, with dry gray skin, smooth or slightly longitudinally split, and oblate crown. Scaly buds, brown or reddish-brown branchlets, with sparse lenticels, odd pinnate compound leaves, alternate, 13-25 leaflets, ovate-lanceolate, entire or nearly undulate, with 1-2 round glands at each corner of the leaf base. Heterozygous, terminal erect panicle, heterozygous or unisexual flowers, pale yellow or yellow-white, flat samara, spindle-shaped, yellow-green at first, then red and grayish yellow at maturity. The seeds are oblate, flowering in May-June and bearing fruit in September-65438+1October.