. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. THE JUNCO FAMILY KCEBERLINIACE^ Engler HIS family consists of a single genus, with but one known species, a tree or shrub occurring in northern Mexico and adjacent Texas; it is a nearly leafless, spiny branched plant, without economic interest. This curious plant has alternate, scale-Kke leaves, which are broad- est near the apex and very soon deciduous. The very small flowers are perfect, in short racemes near the ends o
. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. THE JUNCO FAMILY KCEBERLINIACE^ Engler HIS family consists of a single genus, with but one known species, a tree or shrub occurring in northern Mexico and adjacent Texas; it is a nearly leafless, spiny branched plant, without economic interest. This curious plant has alternate, scale-Kke leaves, which are broad- est near the apex and very soon deciduous. The very small flowers are perfect, in short racemes near the ends of tie branchlets, opening from March to June. Their calyx consists of 4, rarely only 3, distinctly imbricated, deciduous sepals ovate, blunt i mm. long; the corolla of an equal number of white obovate con- volute petals mm. long, which are somewhat clawed; stamens 8, shorter than the petals, their filaments distinct, and thickened at the middle; the anthers are oval, attached on the back, 2-celled, opening lengthwise; the ovary, of 2 imited carpels, is ovoid, 2-celled, and stalked, the style simple, awl-shaped; stigma termi- nal and blunt; ovules numerous, attached to the placenta in several rows. Fruit a 2-celled globose black berry, tipped with the persistent style; flesh thin; seeds i to several in each cell, spirally twisted and wrinkled; endosperm thin. JUNCO GENUS KCEBEEIJHIA ZUCCARINI Species Eoeberlinia spinosa Zuccarini UNCO inhabits dry, gravelly regions bordering the Rio Grande River and some of its tributaries in Texas and adja- cent Mexico, where it forms immense and formidable thickets and attains a maxi-- mum height, of 8 meters, with a trunk di- ameter of 3 dm. The trunk is very short, scarcely meters tall before it begins to branch into a dense head. The branches are all terminated by firm, often curved thorns, and covered with a light green bark. The bark of the trunk is thin, scaly and red-brown. The twigs are short, alternate and smooth. 706. Fig. 65
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