. Trees of Texas; an illustrated manual of the native and introduced trees of the state . pecies found in our area from Matagorda Bayto the Eio Grande River. HELIETTA. Tulasne. 1. Helietta parviflora Bentham. A shrub or small tree20°-25° high with erect slender trunk, ascending branches,and thin brown bark. Leaves evergreen, small, trifoliate;leaflets sessile, leathery, obovate. Flowers in axillary a samara, with wing divided into 3-4 parts. A Mexican species extending into our area at Eio GrandeCity. PTELEA L. Hop Tree. 1. Ptelea trifoliata L. Hop Tree. AYafer Ash. A shrubor somet
. Trees of Texas; an illustrated manual of the native and introduced trees of the state . pecies found in our area from Matagorda Bayto the Eio Grande River. HELIETTA. Tulasne. 1. Helietta parviflora Bentham. A shrub or small tree20°-25° high with erect slender trunk, ascending branches,and thin brown bark. Leaves evergreen, small, trifoliate;leaflets sessile, leathery, obovate. Flowers in axillary a samara, with wing divided into 3-4 parts. A Mexican species extending into our area at Eio GrandeCity. PTELEA L. Hop Tree. 1. Ptelea trifoliata L. Hop Tree. AYafer Ash. A shrubor sometimes a small round topped tree 20° high Avith smooth,gray, bitter bark. Leaves deciduous, alternate, trifoliate;leaflets sessile, taper pointed, strong scented when greenish white in terminal cymes. Fruit a 2-seededbroad winged samara. Ontario to Florida, Minnesota, Texas, New Mexico, Colo-rado and northern Mexico. There is a wide range of varia-bility in the shape and size of the leaves of the species. Fre-quently cultivated for ornament. The Trees of Texas ll>7. rig. 39. Ptelea Irifoliata. SIMARUBACEAE De Condolle. Ailanthus Desfontaines. 1. Ailanthus glandulosa Desf. Tree of Heaven. A largerapidly growing- tree with thin pale bark, marked with largelenticels. Leaves large, unequally pinnate, ill-scented, leaf-lets 13-41, short stalked, pointed, notched at base with greenglands on the under side of the teeth. Flowers greenishwhite in large panicels. Fruit a linear, curved samara withthe seed in the middle. A Chinese tree naturalized and fre-quently planted for ornament. It sprouts freely from theroots and becomes a ])est in sonu^ localities. 128 Bulletin of the Vniversity of Texas MELIACEAE A^entenat. The Mahoganj^ Famih\Melia L. China Tree. Trees with alternate mostly bipinnate leaves, perfect flow-ers in much branched, axillary panicles and large clusters ofglobose yellow drupes which remain on the tree after theleaves have fallen. 1. Melia Azedaracli
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