Tabebuia

Tabebuia rosea

Tabebuia is a genus of flowering plants in the family Bignoniaceae ( Bignoniaceae ). It comprises 67 species, which are common in America and the West Indies.

Description

Vegetative characteristics

Tabebuia are trees or shrubs whose light to reddish - brown wood is not visible divided into sapwood and heartwood. The Rays are a wide to three cells, the intravascular dots are small to medium in size from 3 to 6 mm. The fibers are thin - to thick-walled. The mean relative density of the timber is 0.4 to 7.4.

The leaves are divided into one to seven ( rarely nine ) leaflets. The leaflets are narrowly elliptical to circular, they can be up to 35 cm long and 32 cm wide. You are busy on the bottom with pedicled or seated fine scales, the loosely distributed until the area can be tight covering. The leaflets are up to 11 cm long stems, petioles up to 18 cm long.

Inflorescences and flowers

The inflorescences are usually wenigblütige panicles, occasionally they are many flowered. Sometimes they are densely covered with fine scales. The inflorescence axis is divided dichotomously, without a strong central rachis arises.

The cup is leathery, two-to three-lobed or rarely occupied with five teeth. It reaches a length of 5 to 25 mm, 4-11 mm wide and is densely covered with fine scales. The crown is tubular and funnel -shaped to tubular and bell-shaped, white to red colored, often the Kronschlund is colored yellow; Tabebuia nodosa and only in Tabebuia aurea the crowns are fully colored yellow. The corolla tube has a length of 2 to 7 cm, and the opening has a diameter of 0.6 to 3.5 cm. The Kronlappen have a length of 0.5 to 3.2 cm. The crown is glabrous or at the starting point of the stamens with fine hairs.

The stamens occur in two lengths, spread are the counters of the dust bag and are 2-6 mm long. The Staminodium is greatly reduced. The ovary is linear shaped and forms in each fruit chamber two or three rows of ovules.

Fruit and seeds

The fruits are elongated linealische to cylindrical capsule fruits, their surface is smooth to Rippig striped and fine to fine scales densely occupied. The seeds are provided with two thin and translucent, membranous wings, the sharply differentiated from the fruiting body.

Dissemination

The species of the genus Tabebuia are widely used in Central and South America, and the West Indies.

System

Within the genus 67 species can be distinguished according to the current generic concept.

• Tabebuia acrophylla ( sign Urb ) Britton
• Tabebuia angustata Britton
• Tabebuia arimaoensis Britton
• Tabebuia aurea ( Manso Silva ) Benth. & Hook.f. ex S.Moore
• Tabebuia bahamensis ( Northr. ) Britton
• Tabebuia berteroi ( DC.) Britton
• Tabebuia bibracteolata ( Griseb. ) Britton
• Tabebuia brooksiana Britton
• Tabebuia buchii ( sign Urb ) Britton
• Tabebuia bullata A.H.Gentry
• Tabebuia calcicola Britton
• Tabebuia caleticana A.H.Gentry & d.albert
• Tabebuia cassinoides ( Lam.) DC.
• Tabebuia clematis Alain
• Tabebuia conferta Urb.
• Tabebuia crispiflora Alain
• Tabebuia × del- riscoi Borhidi
• Tabebuia densifolia Urb.
• Tabebuia dominguensis ( sign Urb ) Britton
• Tabebuia dubia ( C.Wright ex Sauvalle ) Britton ex Seibert
• Tabebuia elegans ( Urb. )
• Tabebuia elliptica ( DC.) Sandwith
• Tabebuia fluviatilis ( Aubl. ) DC.

• Tabebuia glaucescens Urb.
• Tabebuia haemantha ( Bertero ex Sprengel ) DC.
• Tabebuia heterophylla (DC) Britton
• Tabebuia hypoleuca ( Wright ex Sauvalle ) Urb.
• Tabebuia inaequipes Urb.
• Tabebuia insignis ( Miq. ) Sandwith
• Tabebuia jackiana Ekman ex Urb.
• Tabebuia lepidophylla ( A.Richard ) Greenm.
• Tabebuia lepidota ( HBK ) Britton
• Tabebuia leptoneura Urb.
• Tabebuia linearis Alain
• Tabebuia maxonii Urb.
• Tabebuia microphylla ( Lam.) Urb.
• Tabebuia moaensis Britton
• Tabebuia multinervis Urb. Ekman &
• Tabebuia myrtifolia ( Griseb. ) Britton
• Tabebuia nodosa ( Griseb. ) Griseb.
• Tabebuia obovata Urb.
• Tabebuia obtusifolia ( Cham. ) Bur.
• Tabebuia ophiolitica Alain
• Tabebuia orinocensis ( Sandwith ) A.H.Gentry
• Tabebuia pallida ( Lindl. ) Miers

• Tabebuia palustris Hemsl.
• Tabebuia paniculata Leonard
• Tabebuia pilosa A.H.Gentry
• Tabebuia pinetorum Britton
• Tabebuia platyantha ( Griseb. ) Britton
• Tabebuia polyantha Urb. Ekman &
• Tabebuia polymorpha Urb.
• Tabebuia pulverulenta Urb.
• Tabebuia reticulata A.H.Gentry
• Tabebuia revoluta ( sign Urb ) Britton
• Tabebuia rigida Urb.
• Tabebuia rosea ( Bertol. ) DC.
• Roseo Tabebuia alba ( Ridl. ) Sandwith
• Tabebuia sauvallei Britton
• Tabebuia schumanniana Urb.
• Tabebuia shaferi Britton
• Tabebuia simplicifolia Carabia ex Alain
• Tabebuia stenocalyx Sprague & Stapf
• Tabebuia striata A.H.Gentry
• Tabebuia trachycarpa ( Griseb. ) K.Schum.
• Tabebuia vinosa A.H.Gentry
• Tabebuia zanonii A.H.Gentry

Botanical history

The genus Tabebuia was first described in 1838 by Augustin Pyramus de Candolle. According to his concept of the genus included the species of Bignoniaceae that grow as trees with simple leaves. Later editors altered the scope of the genus often, so that a plurality of synonyms created. In addition, a long time could be taken no clear boundary between the genera Tecoma and Tabebuia, which led to further systematic uncertainties. This distinction could be remedied in 1915 by Nathaniel Lord Britton, the different views on the scope of the genus remained until the late 20th century exist. Recently about 100 species of the genus were attributed.

Molecular biological studies have shown, however, that the genus on this scale is not monophyletic, prompting Susan Grose and Richard Olmstead in their revision of the genus Tabebuia sl the solitary species in the genera Handroanthus and Roseodendron sorted.

Swell

• Susan O. Grose and Richard G. Olmstead: Taxonomic Revisions in the polyphyletic genus Tabebuia sl ( Bignoniaceae ). In: Systematic Botany, Volume 32, Issue 3, 2007, pp. 660-670. .