Velloziaceae

Blooms of Talbotia elegans

The Velloziaceae are a plant family in the order of the screws tree -like ( Pandanales ). The ten genera with about 250 species are widespread in the tropics and subtropics, with a center of diversity in South America.

Description

The species of the family are perennial arborescent or herbaceous plants. Like all monocots they have no secondary growth. The alternate and spirally arranged leaves are simple. They are more or less xerophytic. The leaf margin is serrated or smooth ( prickly ).

The flowers are borne singly or in few inflorescences. The hermaphrodite flowers are radial symmetry and threefold. The six arranged bloom ( perianth ) are free or fused. Pro bloom there are 6-66 stamens present. The three carpels are fused to an under standing, syncarp nodes. There are one or two pen available; if there is one then may be the up to the top or deformed to different extents.

They form seed capsules. The seeds contain starch.

Systematics and distribution

This family with a Gondwana distribution comes in paleotropischen and Neotropical floral kingdom from the subtropics to the tropics before. Your disjoint area which includes tropical South America, Africa, Arabia and Madagascar. Only one type each comes in China, Yemen and Saudi Arabia, about 30 in Africa and Madagascar. All other species occur in South America, one of which extends to Panama.

The Velloziaceae family is divided into two sub-families and ten genera with about 240 species:

• Vellozioideae NLMenezes: it contains about nine genera with about 239 species: Aylthonia NLMenezes: contain Earlier Barbacenia.
• Barbacenia Vand. , The approximately 100 species ( mainly in the center and east ) and Venezuela widespread in Brazil.
• Barbaceniopsis LBSm. Around the four species in the north-western Argentina, Bolivia and Peru before.
• Burlemarxia NLMenezes & Semir: contain Earlier Barbacenia. It contains only three species.
• Nanuza L.B.Sm. & Ayensu: The approximately three species occur in eastern Brazil.
• Pleurostima Raf. The approximately 12 species are distributed in tropical South America.
• Talbotia Balf. ( Syn: Talbotiopsis LBSm. ): It contains only one type: Talbotia elegans Balf. It occurs only in the South African province of KwaZulu -Natal and the Transvaal.

• Acanthochlamys PCKao: it contains only one type: Acanthochlamys bracteata PCKao: It grows at altitudes 2700-3500 meters only in the Chinese provinces of western Sichuan and eastern Xizang.

Illustrations

Vellozia types:

Vellozia glauca

Vellozia graminea

Vellozia minima

Vellozia phalocarpa

Vellozia pusilla

Vellozia squamata

Vellozia sulphurea

Swell

• The Velloziaceae in APWebsite family. (Sections systematics and description)
• Description of the family of Velloziaceae at DELTA. ( Description section )
• Renato de Mello - Silva: Velloziaceae, In: N. Smith, SA Mori, A. Henderson, DW Stevenson & SV Heald: Flowering plants of the neotropics, pp. 490-491, Princeton University Press, 2004.
• Renato de Mello - Silva: Morphological analysis, phylogenies and classification in Velloziaceae, In: Botanical Journal of the Linnean Society, Volume 148, Issue 2, 2005, pp. 157-173. Full-Text PDF. (Sections systematics and description)
• Renato de Mello - Silva: Three new combinations in Barbacenia ( Velloziaceae ) Neodiversity, Volume 3, 1-2, 2008: Full-Text PDF.
• Renato de Mello - Silva, 2009: Neotropical Velloziaceae at Neotropikey.
• Renato Mello - Silva, Déborah Yara AC Santos, Maria Luiza F. Salatino, Lucimar B. Motta, Marina B. Cattai, Denise Sasaki, Juliana Lovo, Patrícia B. Pita, Cintia Rocini, Cristiane Rodrigues DN, Mehdi Zarrei & Mark W. Chase: Five vicarious genera from Gondwana: the Velloziaceae as shown by molecules and morphology, In: Annals of Botany, Volume 108, Issue 1, pp. 87-102. doi: 10.1093/aob/mcr107 (sections systematics and distribution )