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Pakistan | Family List | Brassicaceae

Thlaspi Linn., Sp. P1. 645. 1753. Gen. P1. ed. 5:292. 1854; Benth. & Hook.f., l.c. 91; Schulz in Engl. & Prantl, l.c. 444; Busch in Kom., l.c. 576; Hedge in Davis, l.c. 330; in Rech. f., l.c. 111.

Thlaspi kotschyanum
Illustration

Credit: Shaukat & Azmat

  • Carpoceras Boiss.

    Annual, biennial or perennial herbs, glabrous, often glaucous, rarely hairy with simple hairs, erect or suberect. Leaves simple, usually obovate, oblong, shortly stalked; cauline leaves mostly ovate or lanceolate, cordate, (auricles rarely suppressed or absent), amplexicaul, entire or toothed. Racemes corymbose, often elongating in fruit, ebracteate. Flowers small, white, pinkish or yellowish; pedicel filiform, spreading or ascending in fruit. Sepals erect, not saccate, often with broad membranous margin. Petals twice to as long as the sepals, oblongobovate, cuneate below. Stamens 6; filaments linear, not appendaged. Lateral nectar glands in pairs, semilunar with short outer process; middle absent. Ovary± ellipsoid, often narrowly margined, bilocular, 2-16 ovuled; stigma capitate, subbilobed on a short or long style. Siliculae usually obovate-oblong or sub-orbicular, laterally flattened, slightly to broadly winged (rarely wings suppressed), often± notched at the apex (rarely entire), bilocular, dehiscent, glabrous; septum narrowly elliptic, membranous, not veined; seeds ellipsoid, brown; radicle accumbent.

    About 60 species, mostly in Europe and Asia; only 8 species recorded from our area.


    1 Siliculae completely winged, orbicular to broadly obcordate   (2)
    + Siliculae winged above only, or wings suppressed or absent, usually oblong   (4)
           
    2 (1) Fruits orbicular; seeds striated   Thlaspi arvense
    + Fruits obcordate; seeds not striated   (3)
           
    3 (2) Wings of siliculae narrow, not veined   Thlaspi perfoliatum
    + Wings of siliculae broad, reticulately veined   Thlaspi kotschyanum
           
    4 (1) Flowers 3-5 mm across; fruits oblong or obtriangular; apex slightly to distinctly retuse, obscurely to slightly winged   (5)
    + Flowers 6-7 mm across; fruit oblongelliptic; Apex ± entire, not winged   Thlaspi andersonii
           
    5 (4) Siliculae oblong, often subcontorted; plants short, up to 15 cm tall in fruit   (6)
    + Siliculae obtriangular to oblong, straight; plants usually 15-30 cm tall in fruit   (7)
           
    6 (5) Siliculae 2-2.7 mm broad   Thlaspi coclearioides
    + Siliculae c.1.5 m broad   Thlaspi septigerum
           
    7 (5) Petals 5-7.5 mm long; siliculae usually 6-10 mm long, 3-3.5 mm broad; (pedicels not pendent)   Thlaspi cochleariforme
    + Petals 3-5 mm long; siliculae usually 4-5 mm long, 2-3 mm broad; (pedicels often pendent)   Thlaspi griffithianum

    Lower Taxa

    Related Synonym(s):


     

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