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Magnoliopsida
Hillia Jacq.
EOL Text
Hillia
Epiphytic shrubs, scandent, with long pendulous branches. Leaves opposite, thick-coriaceous, entire, petiolate; stipules intrapetiolar, membranaceous, deciduous. Flowers bisexual, actinomorphic, solitary, subsessile, terminal. Calyx with 2-9 foliaceous or truncate lobes; corolla hypocrateriform, the tube elongate, narrow, with 3-7 expanded lobes; stamens 4-7; ovary inferior, of two carpels, each carpel with numerous ovules, the style filiform. Fruit an elongate capsule, narrow, oblong or cylindrical, septicidal; seeds numerous, with an appendage of hairs on the apical portion. A neotropical genus of 24 species.
Hillia is a genus of flowering plants in the family Rubiaceae. It has 24 species.[1] All are indigenous to tropical America.[2]
Most of the species are slightly succulent epiphytes or small trees. A few are subshrubs or lianas. Hillia rivalis is a rheophyte. The tissues of all the species contain raphides. The capsules have a beak-like appendage.[3]
Hillia triflora is cultivated as an ornamental.[4]
Hillia was named by Nicolaus Jacquin in 1760.[5][6] It was named for the English botanist John Hill (1716-1775).[7] Jacquin named only one species, Hillia parasitica. It has been suggested that the specific epithet as well as the generic name might well be a reference to John Hill.[3]
Some authors have placed five of the species in a separate genus, Ravnia. A cladistic analysis of morphological characters found Ravnia to be embedded within Hillia.[3] This hypothesis has not been tested with molecular data.
The genera Hillia, Balmea, and Cosmibuena form a monophyletic group. Some authors have designated this group as the tribe Hillieae, but it might be embedded within another tribe, Hamelieae.[8]
Species[edit]
The following species list may be incomplete or contain synonyms.
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References[edit]
- ^ Hillia At: World Checklist of Rubiaceae At: Kew Gardens Website. (see External links below).
- ^ David J. Mabberley. 2008. Mabberley's Plant-Book third edition (2008). Cambridge University Press: UK. ISBN 978-0-521-82071-4
- ^ a b c Charlotte M. Taylor. 1994. "Revision of Hillia (Rubiaceae)". Annals of the Missouri Botanical Garden 81(4):571-609.
- ^ Anthony J. Huxley, Mark Griffiths, and Margot Levy (editors). 1992. The New Royal Horticultural Society Dictionary of Gardening. The Macmillan Press Limited, London; The Stockton Press, New York. ISBN 978-0-333-47494-5 (set)
- ^ Hillia in International Plant Names Index. (see External links below).
- ^ Nikolaus Joseph von Jacquin. 1760. Enumeratio systematica plantarum, quas in insulis Caribaeis vicinaque Americes continente detexit nouas, aut iam cognitas emandauit pages 3 and 18. (see External links below).
- ^ Umberto Quattrocchi. 2000. CRC World Dictionary of Plant Names volume II. CRC Press: Boca Raton; New York; Washington,DC;, USA. London, UK. ISBN 978-0-8493-2676-9 (vol. II). (see External links below).
- ^ Ulrika Manns and Birgitta Bremer. 2010. "Towards a better understanding of intertribal relationships and stable tribal delimitations within Cinchonoideae s.s. (Rubiaceae)". Molecular Phylogenetics and Evolution 56(1):21-39. doi:10.1016/j.ympev.2010.04.002
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Source | http://en.wikipedia.org/w/index.php?title=Hillia&oldid=625118073 |
Hillia
Arbustos epífitos, escandentes, de largas ramas colgantes. Hojas opuestas, grueso-coriáceas, enteras, pecioladas; estípulas intrapeciolares, membranáceas, deciduas. Flores bisexuales, actinomorfas, solitarias, subsésiles, terminales. Cáliz con 2-9 lóbulos foliáceos o truncados; corola hipocrateriforme, el tubo alargado, estrecho, con 3-7 lóbulos expandidos; estambres 4-7; ovario ínfero, bicarpelar, cada cárpelo con numerosos óvulos, el estilo filiforme. Fruto una cápsula alargada, estrecha, oblonga o cilíndrica, septicida; semillas numerosas, con un apéndice de pelos en la porción apical. Género neotropical con 24 especies.