Flora of the Canadian Arctic Archipelago
Dallwitz, L. Consaul, C. McJannet, R. Boles, G. Argus, J. Gillett, P. Scott, R. Elven, M. LeBlanc, L. Gillespie, A. Brysting, H.
Solstad, and J. English: Tansy-mustard. Brassicaceae Cruciferae , Draba family. Published in In Engl.
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Type: Described from Alaska: Kotzebue Sound. Sisymbrium sophioides Fisch. Vegetative morphology. Plants 25— — cm high; biennial herbs ; caespitose, or not caespitose. Taproot present. Caudex absent. Aerial stems erect. Leaves mainly basal first year plants , or distributed along the stems; alternate; persistent, or dying annually and non-persistent leaves of flowering stems. Petioles present; 1. Petiole hairs shorter than the diameter of the petiole; spreading; straight. Leaf blades compound. Blades 10— 28—35 —60 mm long, 10—14 —20 mm wide, spreading, veins pinnate.
Pflanzenreich schulz cruciferae
Blade adaxial surface glabrous or glabrescent with irregularly forked hairs , hairs puberulent, hairs glandular, hairs sparse, hairs white, or translucent. Blade abaxial surface hairy, hairs pubescent or villous, hairs sparse, hairs white, hairs irregularly branched, hairs spreading. Blades cut into linear divisions. Hydathodes absent. Blade apices acute. Stamen length is given in the proportion of short and long stamens i.
Of the 19 tribes recognized by O. Schulz in Engl. Thanks are also due to Dr.
Davis, Mr. Burtt, Mr. Hedge, Dr. Botschantzev, Dr. Taylor, Dr. Rechinger, Dr. Stewart, Dr. Ali, Prof.
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Nasir, Dr. Kazmi and Dr. Rafique Ahmed for their every possible help. Key to the Genera. Leaves entire. Leaves dentate.
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List of lower taxa. Related Links opens in a new window Treatments in Other Floras www. Brassicaceae S. Login eFloras Home Help. Pakistan Family List. Silicula biarticulated jointed , lower portion narrow, stalk-l ike, dehiscent, upper portion much larger, broadly winged indehiscent, stigma lobes conical, decurrent.
Silicula not jointed, winged or not winged, stigma lobes short, neither conical nor decurrent. Septum complete, siliculae broadly elliptic, oblong, stipitate, seeds winged. Septum incomplete or lacking, siliculae elliptic, not stipitate, seeds not winged. Leaves fleshy, lower subsessile or very shortly petioled, oblong-cuneate to elliptic, siliculae same, flowers small. Leaves ovate-cordate, lower long petioled, siliculae large, flowers large, cultivated. Stigma sessile or style absent fruits usually oblong and narrowly winged rarely suborbicular.
Siliculae broadly winged, sometimes dimorphic the dehiscent usually -6 seeded and indehiscent abnormal ones 1-seeded. Siliculae not so compressed, valves boat-shaped, septum somewhat broad, leaves usually 1-pinnatisect. Siliculae strongly compressed, valves keeled, septum very narrow, leaves usually simple. Heterocarpous with condensed infructescence, siliculae c. Homocarpous with usually elongated infructescence, siliculae more than 4-seeded. Siliculae neither so compressed valves boat shaped , nor winged, very small, cauline leaves cuneate below. The preliminary experiments in controling these factors seem to indicate the possibility of seed production in this group.
The systematics of the two species Brassica oleracea Europe and Brassica juncea Oriental Asia was discussed. The economical differences in the group Brassica oleracea are controled by Mendelian factors with complicate types of interaction. Full text available only in PDF format. Allgayer, H.
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Genetische Untersuchungen mit Gartenkohl Brassica oleracea. Bailey, L. Em The Standard Cyclopedia of Horticulture. The Macmillan Comp. Brieger, F. Em Selbststerilitaet und Kreuzungssterilitaet. Monographien aus dem Gesamtgebiet Der physiologie der Pflanzen und tiere.
Julius Springer, Berlin, Hyazinthen und Tulpen. Der Zuechter 4: East, E. Studies on self-sterility VII. Heredity and selective pollen tube growth. Genetics ,