Umandejua

Mimea ya Umandejua inaainishwa kwenye jenasi Drosera ambayo ni mojawapo ya jenasi kubwa zaidi ya mimea ambayo hula nyama. Jenasi ya Drosera ina angalau spishi 194 2 volumes.. Mimea hii ya familia ya Droseraceae huwavutia, kuwashika na kuwaua wadudu kwa kutumia viungo vyenye kuzalisha maji yenye gundi. Wadudu hawa hupendwa na umandejua kwa sababu mmea wenyewe unamea katika ardhi isiyokuwa na rotuba ya kutosha. Spishi mbalimbali, ambazo huwa na maumbo tofauti, hupatikana katika mabara yote isipokuwa Bara la Antaktiki.

Sifa za mmea
Umandejua ni mimea inayodumu kwa miaka nyingi (lakini baadhi ya spishi hudumu kwa kipindi cha mwaka mmoja tu). Ina maua madogomadogo yaliyosimama ambayo ni karibu sm 1 na m 1 kwa urefu ikitegemea ni spishi ipi. Spishi zinazopanda huwa na shina zinazoweza kuwa ndefu sana hata kufikia mita 3, kama vile D. erythrogyneMann, Phill (2001). The world's largest Drosera ; Carnivorous Plant Newsletter, Vol 30, #3: pg 79..

Imebainika kuwa mmea wa umandejua unaweza kuishi kwa kipindi cha hata miaka 50.Barthlott et al., Karnivoren, p. 102 Jinasi hii imezoea zaidi kupata chakula kupitia kula wadudu kiasi kwamba enzaimu ya aina ya naitreti riadaktesi) ambayo kawaida hutumiwa na mimea kupandishia nitrati haipo.

Picha

Maandiko ya chini

Marejeo
Vitu vingi katika makala haya vinatoka katika  tafsiri ya Kijerumani ya makala haya ya wikipedia article (retrieved 30 Aprili 2006).
 Barthlott, Wilhelm; Porembski, Stefan; Seine, Rüdiger; Theisen, Inge: Karnivoren. Stuttgart, 2004, ISBN 3-8001-4144-2
 Correa A., Mireya D.; Silva, Tania Regina Dos Santos: Drosera (Droseraceae), in: Flora Neotropica, Monograph 96, New York, 2005
 Darwin, Charles: Insectivorous Plants, 1875
 Lowrie, Allen: Carnivorous Plants of Australia, Vol. 1-3, English, Nedlands, Western Australia, 1987 - 1998
 Lowrie, Allen: A taxonomic revision of Drosera section Stolonifera (Droseraceae) from south-west Western Australia, 2005, Nuytsia 15(3):355-393. (Online: http://science.calm.wa.gov.au/nuytsia/15/3/355-394.pdf )
 Olberg, Günter: Sonnentau, Natur und Volk, Bd. 78, Heft 1/3, pp. 32–37, Frankfurt, 1948
 Rivadavia, Fernando; Kondo, Katsuhiko; Kato, Masahiro und Hasebe, Mitsuyasu: Phylogeny of the sundews, Drosera (Droseraceae), based on chloroplast rbcL and nuclear 18S ribosomal DNA Sequences, American Journal of Botany. 2003;90:123-130. (Online: http://www.amjbot.org/cgi/content/full/90/1/123)
 Seine, Rüdiger; Barthlott, Wilhelm: Some proposals on the infrageneric classification of Drosera L., Taxon 43, 583 - 589, 1994
 Schlauer, Jan: A dichotomous key to the genus Drosera L. (Droseraceae), Carnivorous Plant Newsletter, Vol. 25 (1996)

Viungo vya nje

 A key to Drosera species, with distribution maps and growing difficulty scale 
 A virtually exhaustive listing of Drosera pictures on the web 
 International Carnivorous Plant Society
 Carnivorous Plant FAQ
 Listing of scientific Drosera articles online (terraforums.com) 
 The Sundew Grow Guides 
 Sundew images from smugmug 
 Botanical Society of America, Drosera - the Sundews 

Jamii:Fungu na jamaa