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Genus Triumfetta L. (Tiliaceae Juss.) in Viet Nam

Last modified on 11/1/2010 at 3:31:00 PM. Total 760 views.

The genus Triumfetta L. has about 150-160 species in the world, of which seven species occur in Vietnam. They are erect or procumbent herbs or subshrubs. Flowers are in cymes or fascicles, axillary, bisexual, especially with very short peduncles. Sepals and petals usually 5. Stamens numerous, filaments free, anthers dorsifixed. Ovaries 2-5 loculed, ovules 2 per locule, styles simple, stigmas 2-5 lobed. Fruits capsular, spiny or strigose. Spine tips pointed, straight or hooked. Seven species have divided 2 styles. Capsules dehiscent, fruits ca. 0.7-1.4 cm diam., spines 1-3 mm in T. procumbens, T. rotundifolia, T. rhombifolia, T. grandidens and capsules indehiscent, fruits ca. 1.5-2.0 cm diam., spines 4-10 mm in T. pilosa, T. cana, T. annua. Some species are very common in Vietnam such as T. rhombifolia, T. pilosa, T. cana, and some species are rare such as T. procumbens, T. rotundifolia, T. grandidens, T. annua. T. procumbens occurs only in Phu Quoc island, Kien Giang province.

Do Thi Xuyen
IEBR - VAST

(Proceedings of 3rd National Scientific Conference on Ecology and Biological Resources, Hanoi 22th October 2009 - IEBR)

anhtai.bvn

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