Geonoma
Geonoma congesta subsp. osensis
Geonoma is a native to Central and South America Palm genus. The genus includes several ornamental plants.
Features
Geonoma is a very variable species. Most species are rather small. They grow singly or in groups. The palm trees are unarmed and monoecious getrenntgeschlechtig ( monoecious ) and repeatedly flowering. The trunk is very short and subterranean, or erect or creeping. If he is upright, he is always slim. He is enveloped by thin sheaths, is later released. He is mostly stock -like.
The leaves are pinnate and divided regularly or irregularly or are undivided and then bifid ( two-headed ). The inflorescences are individually and ährig, bifurcated or three-to fourfold rarely branched. The ovary is the only unicompartmental bloom.
The chromosome number is 2n = 28
Dissemination and locations
The area of the species ranges from Mexico south to Brazil and Bolivia. All representatives grow in the understory of the tropical rainforest. They come from the plains up to great heights before. They are among the highest occurring palms in South America, Geonoma weberbaueri was found in 3150 m above sea level.
System
( Arecaceae ) is Geonoma within the palm family belongs to the subfamily Arecoideae, Tribe Geonomateae. The genus is monophyletic. Phylogenetic relationships within the tribe are still unclear.
In the World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew, the following types are recognized:
- Geonoma appuniana
- Geonoma arundinacea
- Geonoma aspidiifolia
- Geonoma atrovirens
- Geonoma baculifera
- Geonoma brenesii
- Geonoma brevispatha
- Geonoma brongniartii
- Geonoma camana
- Geonoma chlamydostachys
- Geonoma choco cola
- Geonoma concinna
- Geonoma congesta
- Geonoma cuneata
- Geonoma densa
- Geonoma deversa
- Geonoma divisa
- Geonoma epetiolata
- Geonoma ferruginea
- Geonoma gamiova
- Geonoma gastoniana
- Geonoma hoffmanniana
- Geonoma hugonis
- Geonoma interrupta
- Geonoma irena
- Geonoma jussieuana
- Geonoma laxiflora
- Geonoma leptospadix
- Geonoma linearis
- Geonoma longipedunculata
- Geonoma longivaginata
- Geonoma macrostachys
- Geonoma maxima
- Geonoma monospatha
- Geonoma mooreana
- Geonoma myriantha
- Geonoma oldemanii
- Geonoma oligoclona
- Geonoma orbignyana
- Geonoma paradoxa
- Geonoma paraguanensis
- Geonoma pauciflora
- Geonoma poeppigiana
- Geonoma pohliana
- Geonoma polyandra
- Geonoma polyneura
- Geonoma rubescens
- Geonoma santanderensis
- Geonoma schottiana
- Geonoma scoparia
- Geonoma Seleri
- Geonoma simplicifrons
- Geonoma spinescens
- Geonoma stricta
- Geonoma supracostata
- Geonoma talamancana
- Geonoma tenuissima
- Geonoma triandra
- Geonoma Triglochin
- Geonoma trigonal
- Geonoma umbraculiformis
- Geonoma undata
- Geonoma weberbaueri
- Geonoma wilsonii
Documents
- John Dransfield, Natalie W. Uhl, Conny B. Asmussen, William J. Baker, Madeline M. Harley, Carl E. Lewis: Genera palmarum. The Evolution and Classification of Palms. Second edition, Royal Botanic Gardens, Kew 2008, ISBN 978-1-84246-182-2, pp. 483-486.