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950 Views 6 Replies Last post: Dec 28, 2013 9:39 PM by Claire RSS
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Dec 25, 2013 4:09 PM

I think this plant is.......Corchorus?

Corchorus fascicularis of tridens -familie okra-.jpg

Is this Corchorus fascicularis or tridens? family of the Okra.

I boiled the leaves at home and it goves a oily kind of liquid.

 

If it is what I think than I can eat the leaves when rhey are dry and make a sauce of it.

One person of the village around me siad: you can use it for washing the dishes.

 

Thank for an wanswer.

 

Claire

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    Dec 25, 2013 9:46 PM (in response to Claire)
    Re: I think this plant is.......Corchorus?

    Claire,

     

    For other readers in English, let's just mention that Corchorus is jute.

     

    I am fairly sure yours is C. tridens (called nzofé in Senegal, though I think that's a Bambara word).

     

    To differentiate that from some other species of C., I refer you to this:

    "The qualitative traits expressed by leaves among accessions are significant. The serration on the margin and the setae on the leaf base may be diagnostic features of Genus Corchorus in the family Tiliaceae. Accessions NHCO3 are deeply toothed serrated. This is a distinction for this accession among the others studied. Edmonds (1991) in keys to vegetative leaf structures of the species of Corchorus in Nigeria – Corchorus olitorius, Corchorus aestuans, Corchorus fasicularis and Corchorus tridens stated that;

    Leaf margin serrated, leaves without basal setae...... Corchorus fascularis

    Leaf margin serrated with two basal setae…… Corchorus olitorius

    Leaf margin serrated with at least a set on one side or on some leaves…… Corchorus aestuans

    Leaf margin serrated with two basal setae one on each side…. Corchorus tridens"

    [http://www.ajol.info/index.php/bajopas/article/download/80933/71160]

     

    You will see from this photo that C. fascicularis has narrower leaves than yours

    - http://eol.org/pages/2881978/overview.

     

    This plate shows the capsules from various species of C.

    - http://www.springerimages.com/Images/LifeSciences/1-10.1007_978-3-642-21102-7_2-3

    You will see that the capsules of C. tridens are much more slender than C. fascicularis.

     

     

    Here are detailed descriptions of your two species:

     

    C. fascicularis:

    "Annual, suberect, 50-60 cm tall herb. Stem woody, with scaly bark, glabrous. Leaves 3-costate, elliptic-oblong or lanceolate to narrowly ovate, 1.5-6 cm long, 0.5-2.0 cm broad, glabrous, serrate, basal serratures not prolonged into filiform appendages, obtuse; petiole 3-15 mm long, hirsute; stipules subulate-filiform, c. 5 mm long. Cyme a fascicle of 2-5 (-8) flowers, antiphyllous, very shortly pedunculate. Flowers yellow, 5-6 mm across; bracts minute. Sepals linear-oblong, c. 1.5-2.5 mm long, apiculate. Petals oblong-obovate, as long as sepals. Stamens as many as or twice the number of petals, filaments c. 1.5-2 mm long. Carpels 3; ovary oblong-ovate to linear, 3-loculed, hairy; style short, stigma capitate. Capsules 2-5(-8) in each fascicle, sessile, 1-1.5 cm long, with 1-2 mm long entire beak, somewhat triangular, pubescent, 3-loculed, locules without transverse septa. Seeds wedge shaped, c. 1.5 mm long, angular, black, obliquely truncate at both ends."

    [http://eol.org/pages/2881978/details#physical_description]

    Note that its distribution does not include Senegal

    - http://eol.org/pages/2881978/maps

     

    C. tridens:

    "Branched annual herb, up to 60 cm tall, erect when young, older branches spreading. Young branches compressed and angular hairless or sparsely hairy. Leaves oblong to lanceolate, up to 11 cm, hairless or sparsely hairy on the veins; margins crenate-serrate with a long bristle on the 2 lowermost teeth. Flowers in 1-3 flowered leaf-opposed clusters; sepals linear, pointed, as long as the petals. Fruit a more or less erect, cylindric capsule, straight or slightly curved, up to 4 cm long, with a finely rough surface and 3 spreading apical horns."

    [http://eol.org/pages/483659/details]

    Note that its distribution does include Senegal

    - http://eol.org/pages/483659/maps

     

     

    Good description of C. tridens

    - http://database.prota.org/PROTAhtml/Corchorus%20tridens_En.htm

    That includes description of its use in foods (its mucilaginous nature is useful in thickening soups).

    More description and photos

    - http://www.jircas.affrc.go.jp/project/africa_dojo/FakaraPlants/Contents/Species_pages/Corchtri.html

     

     

    At the start of this reply, I wrote 'I am fairly sure'. I cannot be certain, from the research I have done, because there are other species. Of the two you suggested, I am sure it is not C. fascicularis, and C. tridens seems very likely, but I cannot rule out other species. For a full list of C. species, see http://eol.org/pages/61159/names.

    I leave you to consider the other species (since you have access to the actual plant material, and at various times of year, you can look at characters such as the setae much more efficiently than I can).

     

     

    Mike

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