BOTN 201 - Department of Biology - TAMU
Images of the Navasota Flora - 30 April 1995
One of 4 Texas Lonicera species ('Honeysuckle' - Caprifoliaceae), L. sempervirens ('Trumpet Honeysuckle') is the only native in the flora of Eastern Texas. It is, however, sympatric with L. japonica, an Asian element of the genus that has escaped from cultivation that, according to Correll and Johnston (1979), has "become a rampant pernicious weed that has endangered native vegetation from Florida to Texas" and elsewhere. This photo shows connate upper leaves that distinguish native species from the 'Japanese Honeysuckle'. A close look at a "Trumpet Honeysuckle" flower reveals the sympetalous corolla and epipetalous stamens characteristic of the Asteridae. This species, a perennial vine, is ideal for cultivation and - as one might assume from floral structure and coloration - a plant that will draw humming birds. This set of features is also characteristic of the local 'Trumpet Creeper'Lonicera species and taxa representing other This plant, Lunaria annua ('Moonwort', 'Honesty', 'Satin-Flower', 'Money Plant'), shows the classic 'cross' corolla configuration of the Mustard Family (Brassicaceae - Cruciferae). It is one of three Lunaria species, all of Eurasian origin. Despite the specific epithet, the plant grows (only under cultivation in Texas) as a biennial in that the first year of vegetative growth must be followed by a cold period to induce flowering the following year. While the Lunaria corolla is typical of the family, and the androecium shows the typical tetradynamous configuration, the calyx is a bit unusual in that the sepals are 'saccate' with bag-like pouches. Lunaria annua is cultivated for its replum. This distinctive feature of the Brassicaceae becomes evident as gynoecia mature on the racemose inflorescence. At maturity, Lunaria fruits develop to form large, coin-like ('Money-Plant') structures with the green 'valves' separated by a translucent replum. The replum remains after dehiscence and, once the pericarp valves has separated from the replum, masses of Lunaria infructescences are harvested and arranged into dried floral displays.
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Last updated by HDW on 2 May 1995