Herbs, epiphytic or lithophytic, sympodial. Roots velamentous, glabrous. Stems rhizomatous, covered by scarious sheaths; pseudobulbs often angled, ovoid, stout. Leaves conduplicate, articulate, thin to leathery. Inflorescences lateral from base of pseudobulb, spikes [racemes], erect to pendent, pedunculate, rachis swollen, fleshy. Flowers resupinate, sessile; dorsal sepal distinct and free; lateral sepals adnate to column foot forming mentum; petals distinct and free, smaller than sepals; lip fleshy; column erect with aristate terminal teeth or wings; anther terminal, incumbent, operculate; pollinia 2 or 4, hard, waxy; stigma entire; ovary sessile [pedicellate]. Fruits capsules, beakless. x = 19, 20.
Species 1000-1200: pantropical, mostly Asia and Africa.[1]
There are approximately 2,847 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them: B. congolanum leucorrhachis · B. 'Fredensborg Delight' · B. 'Louis Sander' · B. 'Sierra Leone' · B. abbreviatum · B. abbrevilabium · B. aberrans · B. ablepharon · B. absconditum hastula · B. absconditum subsp. hastula · B. acanthoglossum · B. acropogon · B. acuminatifolium · B. acuminatum · B. acutebracteatum · B. acutebracteatum var. rubrobrunneopapillosum · B. acutibrachium · B. acutiflorum · B. acutilingue · B. acutisepalum · B. acutispicatum · B. acutubracteatum · B. acutum · B. adangense · B. adelphidium · B. adenambon · B. adenoblepharon · B. adenoblephoron · B. adenocarpum · B. adenombon · B. adenopetalum · B. adenophorum · B. adiamantinum · B. adjungens · B. adolphi · B. adpressiscapum · B. adventicium · B. aechmophorum · B. aemulum · B. aeolinum · B. aeolium · B. aeropogon · B. aestivale · B. aff. flavescens · B. aff. ngoyense · B. aff. putidum · B. affine · B. affinoides · B. africanum · B. afzelii · B. agapethoides · B. agastor · B. agastyamalayanum · B. aggregatum · B. aithorhachis · B. alabastraceus · B. alagense · B. alatum · B. albibracteum · B. albidostylidium · B. albidum · B. albo-roseum · B. albo-viride · B. albociliatum · B. albociliatum var. weiminianum · B. alboroseum · B. album · B. alcicorne · B. alexandrae · B. algidum · B. alinae · B. alkmaarense · B. alleizettei · B. allenkerrii · B. alliifolium · B. alopecurum · B. alsiosum · B. alticaule · B. alticola · B. altispex · B. alveatum · B. amanicum · B. amauryae · B. amazonicum · B. ambatoavense · B. amblyacron · B. amblyanthum · B. amblyoglossum · B. ambohitrense · B. ambongense · B. ambreae · B. ambrense · B. ambrosia 'Varietät' · B. ambrosia nepalensis · B. ambrosia subsp. nepalensis · B. ambrosta · B. amesiantm · B. amesianum · B. amoenum · B. amphorimorphum
What is this? Click to find out...